./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_product37.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8ded7ca-bddb-441a-bfff-046a6784df0d/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8ded7ca-bddb-441a-bfff-046a6784df0d/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8ded7ca-bddb-441a-bfff-046a6784df0d/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8ded7ca-bddb-441a-bfff-046a6784df0d/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_product37.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8ded7ca-bddb-441a-bfff-046a6784df0d/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8ded7ca-bddb-441a-bfff-046a6784df0d/bin/uautomizer-DrprNOufMa --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 70e213904f46d9e57b153e0058e447b0a5def856d61642628bc56ad0035cdccb --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 00:06:48,010 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 00:06:48,012 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 00:06:48,039 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 00:06:48,040 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 00:06:48,041 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 00:06:48,042 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 00:06:48,043 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 00:06:48,045 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 00:06:48,046 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 00:06:48,047 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 00:06:48,048 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 00:06:48,048 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 00:06:48,049 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 00:06:48,050 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 00:06:48,051 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 00:06:48,052 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 00:06:48,053 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 00:06:48,054 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 00:06:48,056 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 00:06:48,057 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 00:06:48,059 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 00:06:48,060 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 00:06:48,061 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 00:06:48,065 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 00:06:48,065 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 00:06:48,065 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 00:06:48,066 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 00:06:48,067 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 00:06:48,068 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 00:06:48,068 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 00:06:48,069 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 00:06:48,070 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 00:06:48,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 00:06:48,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 00:06:48,072 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 00:06:48,073 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 00:06:48,073 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 00:06:48,073 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 00:06:48,074 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 00:06:48,074 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 00:06:48,075 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8ded7ca-bddb-441a-bfff-046a6784df0d/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-07 00:06:48,097 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 00:06:48,097 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 00:06:48,098 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 00:06:48,098 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 00:06:48,099 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 00:06:48,099 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 00:06:48,100 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 00:06:48,100 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 00:06:48,100 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 00:06:48,100 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 00:06:48,100 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 00:06:48,101 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 00:06:48,101 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 00:06:48,101 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 00:06:48,101 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 00:06:48,101 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 00:06:48,102 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 00:06:48,102 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 00:06:48,102 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 00:06:48,102 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 00:06:48,102 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 00:06:48,103 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 00:06:48,103 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 00:06:48,103 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 00:06:48,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:06:48,103 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 00:06:48,104 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 00:06:48,104 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 00:06:48,104 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 00:06:48,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 00:06:48,104 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-07 00:06:48,105 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-07 00:06:48,105 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 00:06:48,105 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 00:06:48,105 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_c8ded7ca-bddb-441a-bfff-046a6784df0d/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8ded7ca-bddb-441a-bfff-046a6784df0d/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 70e213904f46d9e57b153e0058e447b0a5def856d61642628bc56ad0035cdccb [2021-12-07 00:06:48,305 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 00:06:48,321 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 00:06:48,323 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 00:06:48,324 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 00:06:48,324 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 00:06:48,325 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8ded7ca-bddb-441a-bfff-046a6784df0d/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/product-lines/email_spec11_product37.cil.c [2021-12-07 00:06:48,370 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8ded7ca-bddb-441a-bfff-046a6784df0d/bin/uautomizer-DrprNOufMa/data/78eff3d2b/d3ff9dfc01064e739c49a37be45ff705/FLAG8f8c2fd2e [2021-12-07 00:06:48,871 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 00:06:48,871 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8ded7ca-bddb-441a-bfff-046a6784df0d/sv-benchmarks/c/product-lines/email_spec11_product37.cil.c [2021-12-07 00:06:48,890 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8ded7ca-bddb-441a-bfff-046a6784df0d/bin/uautomizer-DrprNOufMa/data/78eff3d2b/d3ff9dfc01064e739c49a37be45ff705/FLAG8f8c2fd2e [2021-12-07 00:06:49,354 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8ded7ca-bddb-441a-bfff-046a6784df0d/bin/uautomizer-DrprNOufMa/data/78eff3d2b/d3ff9dfc01064e739c49a37be45ff705 [2021-12-07 00:06:49,356 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 00:06:49,358 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 00:06:49,359 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 00:06:49,359 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 00:06:49,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 00:06:49,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:06:49" (1/1) ... [2021-12-07 00:06:49,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65474722 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:06:49, skipping insertion in model container [2021-12-07 00:06:49,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:06:49" (1/1) ... [2021-12-07 00:06:49,370 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 00:06:49,409 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 00:06:49,644 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_c8ded7ca-bddb-441a-bfff-046a6784df0d/sv-benchmarks/c/product-lines/email_spec11_product37.cil.c[43755,43768] [2021-12-07 00:06:49,703 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:06:49,711 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 00:06:49,783 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_c8ded7ca-bddb-441a-bfff-046a6784df0d/sv-benchmarks/c/product-lines/email_spec11_product37.cil.c[43755,43768] [2021-12-07 00:06:49,808 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:06:49,835 INFO L208 MainTranslator]: Completed translation [2021-12-07 00:06:49,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:06:49 WrapperNode [2021-12-07 00:06:49,836 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 00:06:49,836 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 00:06:49,837 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 00:06:49,837 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 00:06:49,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:06:49" (1/1) ... [2021-12-07 00:06:49,873 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:06:49" (1/1) ... [2021-12-07 00:06:49,916 INFO L137 Inliner]: procedures = 124, calls = 186, calls flagged for inlining = 51, calls inlined = 46, statements flattened = 832 [2021-12-07 00:06:49,917 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 00:06:49,917 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 00:06:49,918 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 00:06:49,918 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 00:06:49,926 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:06:49" (1/1) ... [2021-12-07 00:06:49,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:06:49" (1/1) ... [2021-12-07 00:06:49,931 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:06:49" (1/1) ... [2021-12-07 00:06:49,931 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:06:49" (1/1) ... [2021-12-07 00:06:49,943 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:06:49" (1/1) ... [2021-12-07 00:06:49,949 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:06:49" (1/1) ... [2021-12-07 00:06:49,953 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:06:49" (1/1) ... [2021-12-07 00:06:49,958 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 00:06:49,959 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 00:06:49,959 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 00:06:49,959 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 00:06:49,960 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:06:49" (1/1) ... [2021-12-07 00:06:49,967 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:06:49,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8ded7ca-bddb-441a-bfff-046a6784df0d/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:06:49,988 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8ded7ca-bddb-441a-bfff-046a6784df0d/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 00:06:49,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8ded7ca-bddb-441a-bfff-046a6784df0d/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 00:06:50,017 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-07 00:06:50,017 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-07 00:06:50,017 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-07 00:06:50,017 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-07 00:06:50,017 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-12-07 00:06:50,017 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-12-07 00:06:50,017 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-12-07 00:06:50,018 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-12-07 00:06:50,018 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-12-07 00:06:50,018 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-12-07 00:06:50,018 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-07 00:06:50,018 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-12-07 00:06:50,018 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-12-07 00:06:50,018 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2021-12-07 00:06:50,018 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2021-12-07 00:06:50,018 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-07 00:06:50,018 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-07 00:06:50,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 00:06:50,018 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-12-07 00:06:50,019 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-12-07 00:06:50,019 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-12-07 00:06:50,019 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-12-07 00:06:50,019 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-07 00:06:50,019 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-07 00:06:50,019 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-07 00:06:50,019 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-07 00:06:50,019 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-12-07 00:06:50,019 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-12-07 00:06:50,019 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-12-07 00:06:50,019 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-12-07 00:06:50,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-07 00:06:50,019 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-12-07 00:06:50,020 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-12-07 00:06:50,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 00:06:50,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 00:06:50,139 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 00:06:50,141 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 00:06:50,560 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 00:06:50,568 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 00:06:50,568 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-07 00:06:50,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:06:50 BoogieIcfgContainer [2021-12-07 00:06:50,570 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 00:06:50,571 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 00:06:50,571 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 00:06:50,574 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 00:06:50,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:06:49" (1/3) ... [2021-12-07 00:06:50,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b15d02d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:06:50, skipping insertion in model container [2021-12-07 00:06:50,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:06:49" (2/3) ... [2021-12-07 00:06:50,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b15d02d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:06:50, skipping insertion in model container [2021-12-07 00:06:50,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:06:50" (3/3) ... [2021-12-07 00:06:50,576 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec11_product37.cil.c [2021-12-07 00:06:50,580 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 00:06:50,580 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-07 00:06:50,616 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 00:06:50,621 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-07 00:06:50,622 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-07 00:06:50,648 INFO L276 IsEmpty]: Start isEmpty. Operand has 258 states, 201 states have (on average 1.5223880597014925) internal successors, (306), 203 states have internal predecessors, (306), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2021-12-07 00:06:50,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-07 00:06:50,660 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:06:50,661 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:06:50,661 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:06:50,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:06:50,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1778421815, now seen corresponding path program 1 times [2021-12-07 00:06:50,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:06:50,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247242127] [2021-12-07 00:06:50,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:06:50,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:06:50,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:50,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:06:50,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:50,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:06:50,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:50,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:06:50,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:50,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-07 00:06:50,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:50,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-07 00:06:50,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:50,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 00:06:50,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:51,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-07 00:06:51,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:51,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-07 00:06:51,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:51,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-07 00:06:51,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:51,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-07 00:06:51,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:51,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-07 00:06:51,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:51,044 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-07 00:06:51,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:06:51,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247242127] [2021-12-07 00:06:51,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247242127] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:06:51,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731829298] [2021-12-07 00:06:51,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:06:51,045 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:06:51,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8ded7ca-bddb-441a-bfff-046a6784df0d/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:06:51,046 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8ded7ca-bddb-441a-bfff-046a6784df0d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:06:51,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8ded7ca-bddb-441a-bfff-046a6784df0d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-07 00:06:51,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:51,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 926 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-07 00:06:51,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:06:51,321 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-07 00:06:51,321 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:06:51,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731829298] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:06:51,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:06:51,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2021-12-07 00:06:51,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142668795] [2021-12-07 00:06:51,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:06:51,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-07 00:06:51,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:06:51,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-07 00:06:51,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-07 00:06:51,356 INFO L87 Difference]: Start difference. First operand has 258 states, 201 states have (on average 1.5223880597014925) internal successors, (306), 203 states have internal predecessors, (306), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-07 00:06:51,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:06:51,401 INFO L93 Difference]: Finished difference Result 357 states and 518 transitions. [2021-12-07 00:06:51,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-07 00:06:51,402 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 87 [2021-12-07 00:06:51,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:06:51,412 INFO L225 Difference]: With dead ends: 357 [2021-12-07 00:06:51,412 INFO L226 Difference]: Without dead ends: 251 [2021-12-07 00:06:51,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-07 00:06:51,418 INFO L933 BasicCegarLoop]: 382 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, 382 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 [2021-12-07 00:06:51,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:06:51,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-12-07 00:06:51,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2021-12-07 00:06:51,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 195 states have (on average 1.5128205128205128) internal successors, (295), 196 states have internal predecessors, (295), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2021-12-07 00:06:51,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 374 transitions. [2021-12-07 00:06:51,474 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 374 transitions. Word has length 87 [2021-12-07 00:06:51,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:06:51,476 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 374 transitions. [2021-12-07 00:06:51,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-07 00:06:51,476 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 374 transitions. [2021-12-07 00:06:51,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-12-07 00:06:51,481 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:06:51,481 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:06:51,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8ded7ca-bddb-441a-bfff-046a6784df0d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-07 00:06:51,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8ded7ca-bddb-441a-bfff-046a6784df0d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-12-07 00:06:51,683 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:06:51,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:06:51,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1824099872, now seen corresponding path program 1 times [2021-12-07 00:06:51,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:06:51,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146171940] [2021-12-07 00:06:51,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:06:51,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:06:51,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:51,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:06:51,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:51,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:06:51,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:51,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:06:51,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:51,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-07 00:06:51,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:51,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-07 00:06:51,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:51,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 00:06:51,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:51,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-07 00:06:51,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:51,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-07 00:06:51,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:51,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-07 00:06:51,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:51,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-07 00:06:51,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:51,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-07 00:06:51,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:51,945 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-07 00:06:51,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:06:51,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146171940] [2021-12-07 00:06:51,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146171940] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:06:51,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457260657] [2021-12-07 00:06:51,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:06:51,947 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:06:51,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8ded7ca-bddb-441a-bfff-046a6784df0d/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:06:51,948 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8ded7ca-bddb-441a-bfff-046a6784df0d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:06:51,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8ded7ca-bddb-441a-bfff-046a6784df0d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-07 00:06:52,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:52,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 00:06:52,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:06:52,176 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-07 00:06:52,176 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:06:52,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457260657] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:06:52,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:06:52,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-07 00:06:52,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579922655] [2021-12-07 00:06:52,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:06:52,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:06:52,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:06:52,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:06:52,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-07 00:06:52,178 INFO L87 Difference]: Start difference. First operand 251 states and 374 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-07 00:06:52,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:06:52,204 INFO L93 Difference]: Finished difference Result 347 states and 499 transitions. [2021-12-07 00:06:52,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:06:52,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 88 [2021-12-07 00:06:52,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:06:52,208 INFO L225 Difference]: With dead ends: 347 [2021-12-07 00:06:52,208 INFO L226 Difference]: Without dead ends: 254 [2021-12-07 00:06:52,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-07 00:06:52,210 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 1 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 742 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 [2021-12-07 00:06:52,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 742 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:06:52,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-12-07 00:06:52,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 253. [2021-12-07 00:06:52,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 197 states have (on average 1.5076142131979695) internal successors, (297), 198 states have internal predecessors, (297), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2021-12-07 00:06:52,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 376 transitions. [2021-12-07 00:06:52,228 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 376 transitions. Word has length 88 [2021-12-07 00:06:52,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:06:52,229 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 376 transitions. [2021-12-07 00:06:52,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-07 00:06:52,229 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 376 transitions. [2021-12-07 00:06:52,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-07 00:06:52,232 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:06:52,233 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2021-12-07 00:06:52,253 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8ded7ca-bddb-441a-bfff-046a6784df0d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-07 00:06:52,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8ded7ca-bddb-441a-bfff-046a6784df0d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:06:52,435 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:06:52,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:06:52,437 INFO L85 PathProgramCache]: Analyzing trace with hash -2103248094, now seen corresponding path program 1 times [2021-12-07 00:06:52,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:06:52,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070363754] [2021-12-07 00:06:52,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:06:52,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:06:52,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:52,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:06:52,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:52,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:06:52,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:52,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:06:52,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:52,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-07 00:06:52,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:52,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-07 00:06:52,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:52,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 00:06:52,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:52,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-07 00:06:52,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:52,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-07 00:06:52,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:52,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-07 00:06:52,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:52,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-07 00:06:52,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:52,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-07 00:06:52,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:52,668 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-07 00:06:52,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:06:52,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070363754] [2021-12-07 00:06:52,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070363754] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:06:52,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268919817] [2021-12-07 00:06:52,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:06:52,669 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:06:52,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8ded7ca-bddb-441a-bfff-046a6784df0d/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:06:52,670 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8ded7ca-bddb-441a-bfff-046a6784df0d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:06:52,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8ded7ca-bddb-441a-bfff-046a6784df0d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-07 00:06:52,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:52,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 954 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 00:06:52,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:06:52,902 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-07 00:06:52,903 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:06:52,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268919817] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:06:52,903 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:06:52,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-07 00:06:52,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167483767] [2021-12-07 00:06:52,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:06:52,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:06:52,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:06:52,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:06:52,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-07 00:06:52,905 INFO L87 Difference]: Start difference. First operand 253 states and 376 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-07 00:06:52,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:06:52,940 INFO L93 Difference]: Finished difference Result 541 states and 819 transitions. [2021-12-07 00:06:52,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:06:52,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 97 [2021-12-07 00:06:52,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:06:52,945 INFO L225 Difference]: With dead ends: 541 [2021-12-07 00:06:52,945 INFO L226 Difference]: Without dead ends: 315 [2021-12-07 00:06:52,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-07 00:06:52,948 INFO L933 BasicCegarLoop]: 394 mSDtfsCounter, 115 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 722 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 [2021-12-07 00:06:52,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 722 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:06:52,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2021-12-07 00:06:52,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 307. [2021-12-07 00:06:52,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 240 states have (on average 1.5291666666666666) internal successors, (367), 241 states have internal predecessors, (367), 51 states have call successors, (51), 15 states have call predecessors, (51), 15 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2021-12-07 00:06:52,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 468 transitions. [2021-12-07 00:06:52,979 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 468 transitions. Word has length 97 [2021-12-07 00:06:52,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:06:52,979 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 468 transitions. [2021-12-07 00:06:52,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-07 00:06:52,979 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 468 transitions. [2021-12-07 00:06:52,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-07 00:06:52,982 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:06:52,982 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2021-12-07 00:06:53,003 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8ded7ca-bddb-441a-bfff-046a6784df0d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-07 00:06:53,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8ded7ca-bddb-441a-bfff-046a6784df0d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:06:53,184 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:06:53,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:06:53,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1819301075, now seen corresponding path program 1 times [2021-12-07 00:06:53,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:06:53,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975573082] [2021-12-07 00:06:53,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:06:53,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:06:53,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:53,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:06:53,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:53,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:06:53,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:53,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:06:53,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:53,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-07 00:06:53,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:53,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-07 00:06:53,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:53,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 00:06:53,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:53,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-07 00:06:53,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:53,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-07 00:06:53,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:53,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-07 00:06:53,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:53,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-07 00:06:53,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:53,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-07 00:06:53,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:53,476 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-07 00:06:53,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:06:53,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975573082] [2021-12-07 00:06:53,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975573082] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:06:53,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159495847] [2021-12-07 00:06:53,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:06:53,477 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:06:53,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8ded7ca-bddb-441a-bfff-046a6784df0d/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:06:53,478 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8ded7ca-bddb-441a-bfff-046a6784df0d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:06:53,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8ded7ca-bddb-441a-bfff-046a6784df0d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-07 00:06:53,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:53,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 961 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-07 00:06:53,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:06:53,749 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-07 00:06:53,749 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:06:53,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159495847] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:06:53,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:06:53,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-12-07 00:06:53,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782618337] [2021-12-07 00:06:53,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:06:53,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:06:53,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:06:53,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:06:53,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-07 00:06:53,752 INFO L87 Difference]: Start difference. First operand 307 states and 468 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-07 00:06:53,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:06:53,800 INFO L93 Difference]: Finished difference Result 605 states and 926 transitions. [2021-12-07 00:06:53,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 00:06:53,800 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 98 [2021-12-07 00:06:53,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:06:53,805 INFO L225 Difference]: With dead ends: 605 [2021-12-07 00:06:53,805 INFO L226 Difference]: Without dead ends: 309 [2021-12-07 00:06:53,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-07 00:06:53,808 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 133 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 1308 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:06:53,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 1308 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:06:53,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-12-07 00:06:53,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2021-12-07 00:06:53,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 241 states have (on average 1.5269709543568464) internal successors, (368), 243 states have internal predecessors, (368), 51 states have call successors, (51), 15 states have call predecessors, (51), 16 states have return successors, (52), 50 states have call predecessors, (52), 50 states have call successors, (52) [2021-12-07 00:06:53,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 471 transitions. [2021-12-07 00:06:53,830 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 471 transitions. Word has length 98 [2021-12-07 00:06:53,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:06:53,831 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 471 transitions. [2021-12-07 00:06:53,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-07 00:06:53,831 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 471 transitions. [2021-12-07 00:06:53,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-07 00:06:53,834 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:06:53,834 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2021-12-07 00:06:53,855 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8ded7ca-bddb-441a-bfff-046a6784df0d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-07 00:06:54,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8ded7ca-bddb-441a-bfff-046a6784df0d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:06:54,036 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:06:54,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:06:54,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1833333552, now seen corresponding path program 1 times [2021-12-07 00:06:54,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:06:54,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539825106] [2021-12-07 00:06:54,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:06:54,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:06:54,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:54,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:06:54,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:54,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:06:54,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:54,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:06:54,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:54,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:06:54,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:54,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-07 00:06:54,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:54,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-07 00:06:54,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:54,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-07 00:06:54,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:54,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-07 00:06:54,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:54,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-07 00:06:54,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:54,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-07 00:06:54,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:54,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-07 00:06:54,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:54,278 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-07 00:06:54,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:06:54,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539825106] [2021-12-07 00:06:54,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539825106] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:06:54,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219787521] [2021-12-07 00:06:54,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:06:54,279 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:06:54,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8ded7ca-bddb-441a-bfff-046a6784df0d/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:06:54,279 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8ded7ca-bddb-441a-bfff-046a6784df0d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:06:54,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8ded7ca-bddb-441a-bfff-046a6784df0d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-07 00:06:54,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:54,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 962 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-07 00:06:54,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:06:54,521 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-07 00:06:54,522 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:06:54,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219787521] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:06:54,522 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:06:54,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-07 00:06:54,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187900558] [2021-12-07 00:06:54,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:06:54,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:06:54,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:06:54,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:06:54,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-07 00:06:54,524 INFO L87 Difference]: Start difference. First operand 309 states and 471 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-07 00:06:54,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:06:54,583 INFO L93 Difference]: Finished difference Result 607 states and 931 transitions. [2021-12-07 00:06:54,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 00:06:54,584 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 99 [2021-12-07 00:06:54,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:06:54,587 INFO L225 Difference]: With dead ends: 607 [2021-12-07 00:06:54,587 INFO L226 Difference]: Without dead ends: 311 [2021-12-07 00:06:54,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-12-07 00:06:54,590 INFO L933 BasicCegarLoop]: 363 mSDtfsCounter, 132 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 1297 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:06:54,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 1297 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:06:54,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2021-12-07 00:06:54,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2021-12-07 00:06:54,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 242 states have (on average 1.524793388429752) internal successors, (369), 245 states have internal predecessors, (369), 51 states have call successors, (51), 15 states have call predecessors, (51), 17 states have return successors, (57), 50 states have call predecessors, (57), 50 states have call successors, (57) [2021-12-07 00:06:54,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 477 transitions. [2021-12-07 00:06:54,613 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 477 transitions. Word has length 99 [2021-12-07 00:06:54,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:06:54,614 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 477 transitions. [2021-12-07 00:06:54,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-07 00:06:54,614 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 477 transitions. [2021-12-07 00:06:54,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-07 00:06:54,617 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:06:54,617 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-07 00:06:54,650 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8ded7ca-bddb-441a-bfff-046a6784df0d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-07 00:06:54,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8ded7ca-bddb-441a-bfff-046a6784df0d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:06:54,818 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:06:54,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:06:54,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1735515559, now seen corresponding path program 1 times [2021-12-07 00:06:54,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:06:54,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462707088] [2021-12-07 00:06:54,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:06:54,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:06:54,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:54,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:06:54,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:54,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:06:54,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:54,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:06:54,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:54,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:06:54,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:54,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:06:54,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:54,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-07 00:06:54,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:54,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-07 00:06:54,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:54,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-07 00:06:54,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:54,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-07 00:06:54,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:54,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-07 00:06:54,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:54,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-07 00:06:54,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:54,939 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-07 00:06:54,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:06:54,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462707088] [2021-12-07 00:06:54,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462707088] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:06:54,939 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:06:54,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-07 00:06:54,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482749193] [2021-12-07 00:06:54,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:06:54,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-07 00:06:54,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:06:54,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-07 00:06:54,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-07 00:06:54,941 INFO L87 Difference]: Start difference. First operand 311 states and 477 transitions. Second operand has 9 states, 8 states have (on average 8.125) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-07 00:06:55,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:06:55,859 INFO L93 Difference]: Finished difference Result 722 states and 1120 transitions. [2021-12-07 00:06:55,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-07 00:06:55,860 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.125) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 100 [2021-12-07 00:06:55,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:06:55,863 INFO L225 Difference]: With dead ends: 722 [2021-12-07 00:06:55,863 INFO L226 Difference]: Without dead ends: 434 [2021-12-07 00:06:55,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-07 00:06:55,865 INFO L933 BasicCegarLoop]: 455 mSDtfsCounter, 799 mSDsluCounter, 1057 mSDsCounter, 0 mSdLazyCounter, 1306 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 1512 SdHoareTripleChecker+Invalid, 1639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 1306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-07 00:06:55,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [816 Valid, 1512 Invalid, 1639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 1306 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-07 00:06:55,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2021-12-07 00:06:55,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 311. [2021-12-07 00:06:55,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 242 states have (on average 1.524793388429752) internal successors, (369), 245 states have internal predecessors, (369), 51 states have call successors, (51), 15 states have call predecessors, (51), 17 states have return successors, (56), 50 states have call predecessors, (56), 50 states have call successors, (56) [2021-12-07 00:06:55,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 476 transitions. [2021-12-07 00:06:55,888 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 476 transitions. Word has length 100 [2021-12-07 00:06:55,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:06:55,889 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 476 transitions. [2021-12-07 00:06:55,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.125) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-07 00:06:55,889 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 476 transitions. [2021-12-07 00:06:55,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-07 00:06:55,890 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:06:55,891 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:06:55,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-07 00:06:55,891 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:06:55,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:06:55,891 INFO L85 PathProgramCache]: Analyzing trace with hash 2005228972, now seen corresponding path program 2 times [2021-12-07 00:06:55,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:06:55,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171126685] [2021-12-07 00:06:55,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:06:55,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:06:55,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:55,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:06:55,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:55,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:06:55,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:55,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:06:55,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:55,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:06:55,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:55,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:06:55,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:55,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-07 00:06:55,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:55,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-07 00:06:55,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:55,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-07 00:06:55,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:55,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-07 00:06:55,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:55,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-07 00:06:55,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:55,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-07 00:06:55,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:55,984 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-07 00:06:55,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:06:55,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171126685] [2021-12-07 00:06:55,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171126685] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:06:55,984 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:06:55,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-07 00:06:55,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368683612] [2021-12-07 00:06:55,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:06:55,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-07 00:06:55,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:06:55,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-07 00:06:55,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-07 00:06:55,985 INFO L87 Difference]: Start difference. First operand 311 states and 476 transitions. Second operand has 9 states, 8 states have (on average 8.25) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-07 00:06:56,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:06:56,817 INFO L93 Difference]: Finished difference Result 724 states and 1123 transitions. [2021-12-07 00:06:56,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-07 00:06:56,818 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.25) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 101 [2021-12-07 00:06:56,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:06:56,820 INFO L225 Difference]: With dead ends: 724 [2021-12-07 00:06:56,820 INFO L226 Difference]: Without dead ends: 436 [2021-12-07 00:06:56,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-07 00:06:56,822 INFO L933 BasicCegarLoop]: 454 mSDtfsCounter, 795 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 1310 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 1508 SdHoareTripleChecker+Invalid, 1643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 1310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-07 00:06:56,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [812 Valid, 1508 Invalid, 1643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 1310 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-07 00:06:56,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2021-12-07 00:06:56,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 313. [2021-12-07 00:06:56,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 243 states have (on average 1.522633744855967) internal successors, (370), 247 states have internal predecessors, (370), 51 states have call successors, (51), 15 states have call predecessors, (51), 18 states have return successors, (58), 50 states have call predecessors, (58), 50 states have call successors, (58) [2021-12-07 00:06:56,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 479 transitions. [2021-12-07 00:06:56,842 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 479 transitions. Word has length 101 [2021-12-07 00:06:56,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:06:56,843 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 479 transitions. [2021-12-07 00:06:56,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.25) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-07 00:06:56,843 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 479 transitions. [2021-12-07 00:06:56,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-07 00:06:56,844 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:06:56,845 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-07 00:06:56,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-07 00:06:56,845 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:06:56,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:06:56,845 INFO L85 PathProgramCache]: Analyzing trace with hash 2093975266, now seen corresponding path program 1 times [2021-12-07 00:06:56,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:06:56,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489529647] [2021-12-07 00:06:56,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:06:56,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:06:56,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:56,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:06:56,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:56,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:06:56,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:56,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:06:56,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:56,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:06:56,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:56,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:06:56,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:56,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:06:56,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:56,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-07 00:06:56,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:56,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-07 00:06:56,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:56,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-07 00:06:56,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:56,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-07 00:06:56,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:56,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-07 00:06:56,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:56,957 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-07 00:06:56,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:06:56,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489529647] [2021-12-07 00:06:56,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489529647] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:06:56,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:06:56,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-07 00:06:56,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653570501] [2021-12-07 00:06:56,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:06:56,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-07 00:06:56,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:06:56,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-07 00:06:56,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-07 00:06:56,958 INFO L87 Difference]: Start difference. First operand 313 states and 479 transitions. Second operand has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 8 states have internal predecessors, (70), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2021-12-07 00:06:58,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:06:58,071 INFO L93 Difference]: Finished difference Result 722 states and 1118 transitions. [2021-12-07 00:06:58,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-07 00:06:58,071 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 8 states have internal predecessors, (70), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 102 [2021-12-07 00:06:58,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:06:58,074 INFO L225 Difference]: With dead ends: 722 [2021-12-07 00:06:58,074 INFO L226 Difference]: Without dead ends: 436 [2021-12-07 00:06:58,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-07 00:06:58,076 INFO L933 BasicCegarLoop]: 442 mSDtfsCounter, 914 mSDsluCounter, 1528 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 385 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 914 SdHoareTripleChecker+Valid, 1970 SdHoareTripleChecker+Invalid, 2695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 385 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-07 00:06:58,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [914 Valid, 1970 Invalid, 2695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [385 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-07 00:06:58,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2021-12-07 00:06:58,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 313. [2021-12-07 00:06:58,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 243 states have (on average 1.522633744855967) internal successors, (370), 247 states have internal predecessors, (370), 51 states have call successors, (51), 15 states have call predecessors, (51), 18 states have return successors, (57), 50 states have call predecessors, (57), 50 states have call successors, (57) [2021-12-07 00:06:58,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 478 transitions. [2021-12-07 00:06:58,094 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 478 transitions. Word has length 102 [2021-12-07 00:06:58,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:06:58,094 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 478 transitions. [2021-12-07 00:06:58,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 8 states have internal predecessors, (70), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2021-12-07 00:06:58,095 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 478 transitions. [2021-12-07 00:06:58,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-07 00:06:58,096 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:06:58,096 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:06:58,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-07 00:06:58,096 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:06:58,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:06:58,097 INFO L85 PathProgramCache]: Analyzing trace with hash 796053935, now seen corresponding path program 2 times [2021-12-07 00:06:58,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:06:58,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171453258] [2021-12-07 00:06:58,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:06:58,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:06:58,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:58,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:06:58,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:58,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:06:58,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:58,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:06:58,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:58,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:06:58,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:58,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:06:58,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:58,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:06:58,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:58,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-07 00:06:58,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:58,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-07 00:06:58,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:58,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-07 00:06:58,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:58,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-07 00:06:58,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:58,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-07 00:06:58,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:58,197 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-07 00:06:58,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:06:58,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171453258] [2021-12-07 00:06:58,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171453258] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:06:58,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:06:58,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-07 00:06:58,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255568824] [2021-12-07 00:06:58,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:06:58,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-07 00:06:58,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:06:58,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-07 00:06:58,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-07 00:06:58,199 INFO L87 Difference]: Start difference. First operand 313 states and 478 transitions. Second operand has 12 states, 11 states have (on average 6.454545454545454) internal successors, (71), 8 states have internal predecessors, (71), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2021-12-07 00:06:59,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:06:59,209 INFO L93 Difference]: Finished difference Result 724 states and 1124 transitions. [2021-12-07 00:06:59,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-07 00:06:59,209 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.454545454545454) internal successors, (71), 8 states have internal predecessors, (71), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 103 [2021-12-07 00:06:59,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:06:59,212 INFO L225 Difference]: With dead ends: 724 [2021-12-07 00:06:59,212 INFO L226 Difference]: Without dead ends: 438 [2021-12-07 00:06:59,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-07 00:06:59,213 INFO L933 BasicCegarLoop]: 443 mSDtfsCounter, 909 mSDsluCounter, 1528 mSDsCounter, 0 mSdLazyCounter, 2343 mSolverCounterSat, 380 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 1971 SdHoareTripleChecker+Invalid, 2723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 380 IncrementalHoareTripleChecker+Valid, 2343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-07 00:06:59,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [909 Valid, 1971 Invalid, 2723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [380 Valid, 2343 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-07 00:06:59,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2021-12-07 00:06:59,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 315. [2021-12-07 00:06:59,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 244 states have (on average 1.5204918032786885) internal successors, (371), 249 states have internal predecessors, (371), 51 states have call successors, (51), 15 states have call predecessors, (51), 19 states have return successors, (62), 50 states have call predecessors, (62), 50 states have call successors, (62) [2021-12-07 00:06:59,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 484 transitions. [2021-12-07 00:06:59,231 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 484 transitions. Word has length 103 [2021-12-07 00:06:59,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:06:59,231 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 484 transitions. [2021-12-07 00:06:59,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.454545454545454) internal successors, (71), 8 states have internal predecessors, (71), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2021-12-07 00:06:59,232 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 484 transitions. [2021-12-07 00:06:59,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-07 00:06:59,233 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:06:59,233 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-07 00:06:59,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-07 00:06:59,233 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:06:59,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:06:59,234 INFO L85 PathProgramCache]: Analyzing trace with hash -280241827, now seen corresponding path program 1 times [2021-12-07 00:06:59,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:06:59,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702492425] [2021-12-07 00:06:59,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:06:59,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:06:59,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:59,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:06:59,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:59,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:06:59,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:59,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:06:59,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:59,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:06:59,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:59,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:06:59,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:59,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:06:59,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:59,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-07 00:06:59,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:59,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-07 00:06:59,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:59,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-07 00:06:59,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:59,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-07 00:06:59,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:59,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-07 00:06:59,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:59,331 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-07 00:06:59,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:06:59,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702492425] [2021-12-07 00:06:59,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702492425] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:06:59,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738853440] [2021-12-07 00:06:59,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:06:59,331 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:06:59,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8ded7ca-bddb-441a-bfff-046a6784df0d/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:06:59,332 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8ded7ca-bddb-441a-bfff-046a6784df0d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:06:59,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8ded7ca-bddb-441a-bfff-046a6784df0d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-07 00:06:59,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:59,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 967 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 00:06:59,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:06:59,539 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-07 00:06:59,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:06:59,648 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-07 00:06:59,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738853440] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:06:59,648 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:06:59,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2021-12-07 00:06:59,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071223415] [2021-12-07 00:06:59,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:06:59,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-07 00:06:59,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:06:59,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-07 00:06:59,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-12-07 00:06:59,649 INFO L87 Difference]: Start difference. First operand 315 states and 484 transitions. Second operand has 15 states, 14 states have (on average 8.357142857142858) internal successors, (117), 11 states have internal predecessors, (117), 4 states have call successors, (27), 6 states have call predecessors, (27), 3 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2021-12-07 00:07:01,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:07:01,268 INFO L93 Difference]: Finished difference Result 1453 states and 2432 transitions. [2021-12-07 00:07:01,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-07 00:07:01,268 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 8.357142857142858) internal successors, (117), 11 states have internal predecessors, (117), 4 states have call successors, (27), 6 states have call predecessors, (27), 3 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) Word has length 104 [2021-12-07 00:07:01,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:07:01,275 INFO L225 Difference]: With dead ends: 1453 [2021-12-07 00:07:01,275 INFO L226 Difference]: Without dead ends: 1169 [2021-12-07 00:07:01,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2021-12-07 00:07:01,278 INFO L933 BasicCegarLoop]: 657 mSDtfsCounter, 2871 mSDsluCounter, 3217 mSDsCounter, 0 mSdLazyCounter, 3582 mSolverCounterSat, 1176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2873 SdHoareTripleChecker+Valid, 3874 SdHoareTripleChecker+Invalid, 4758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1176 IncrementalHoareTripleChecker+Valid, 3582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-07 00:07:01,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2873 Valid, 3874 Invalid, 4758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1176 Valid, 3582 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-07 00:07:01,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2021-12-07 00:07:01,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 668. [2021-12-07 00:07:01,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 533 states have (on average 1.5797373358348967) internal successors, (842), 538 states have internal predecessors, (842), 115 states have call successors, (115), 15 states have call predecessors, (115), 19 states have return successors, (136), 114 states have call predecessors, (136), 114 states have call successors, (136) [2021-12-07 00:07:01,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 1093 transitions. [2021-12-07 00:07:01,322 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 1093 transitions. Word has length 104 [2021-12-07 00:07:01,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:07:01,323 INFO L470 AbstractCegarLoop]: Abstraction has 668 states and 1093 transitions. [2021-12-07 00:07:01,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 8.357142857142858) internal successors, (117), 11 states have internal predecessors, (117), 4 states have call successors, (27), 6 states have call predecessors, (27), 3 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2021-12-07 00:07:01,323 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 1093 transitions. [2021-12-07 00:07:01,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-07 00:07:01,325 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:07:01,326 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-07 00:07:01,346 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8ded7ca-bddb-441a-bfff-046a6784df0d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-07 00:07:01,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8ded7ca-bddb-441a-bfff-046a6784df0d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:07:01,527 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:07:01,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:07:01,529 INFO L85 PathProgramCache]: Analyzing trace with hash 110933035, now seen corresponding path program 1 times [2021-12-07 00:07:01,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:07:01,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538885375] [2021-12-07 00:07:01,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:07:01,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:07:01,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:01,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:07:01,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:01,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:07:01,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:01,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:07:01,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:01,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:07:01,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:01,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:07:01,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:01,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:07:01,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:01,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-07 00:07:01,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:01,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-07 00:07:01,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:01,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-07 00:07:01,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:01,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-07 00:07:01,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:01,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-07 00:07:01,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:01,689 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-07 00:07:01,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:07:01,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538885375] [2021-12-07 00:07:01,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538885375] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:07:01,690 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:07:01,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:07:01,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632989393] [2021-12-07 00:07:01,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:07:01,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:07:01,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:07:01,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:07:01,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:07:01,692 INFO L87 Difference]: Start difference. First operand 668 states and 1093 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-07 00:07:02,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:07:02,367 INFO L93 Difference]: Finished difference Result 1714 states and 2875 transitions. [2021-12-07 00:07:02,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 00:07:02,368 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 107 [2021-12-07 00:07:02,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:07:02,374 INFO L225 Difference]: With dead ends: 1714 [2021-12-07 00:07:02,374 INFO L226 Difference]: Without dead ends: 1124 [2021-12-07 00:07:02,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-07 00:07:02,377 INFO L933 BasicCegarLoop]: 487 mSDtfsCounter, 790 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 381 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 1254 SdHoareTripleChecker+Invalid, 1135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 381 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-07 00:07:02,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [805 Valid, 1254 Invalid, 1135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [381 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-07 00:07:02,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2021-12-07 00:07:02,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 993. [2021-12-07 00:07:02,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 993 states, 794 states have (on average 1.5957178841309825) internal successors, (1267), 799 states have internal predecessors, (1267), 179 states have call successors, (179), 15 states have call predecessors, (179), 19 states have return successors, (210), 178 states have call predecessors, (210), 178 states have call successors, (210) [2021-12-07 00:07:02,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 1656 transitions. [2021-12-07 00:07:02,439 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 1656 transitions. Word has length 107 [2021-12-07 00:07:02,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:07:02,439 INFO L470 AbstractCegarLoop]: Abstraction has 993 states and 1656 transitions. [2021-12-07 00:07:02,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-07 00:07:02,439 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 1656 transitions. [2021-12-07 00:07:02,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-07 00:07:02,443 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:07:02,443 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-07 00:07:02,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-07 00:07:02,444 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:07:02,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:07:02,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1931200409, now seen corresponding path program 1 times [2021-12-07 00:07:02,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:07:02,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445029686] [2021-12-07 00:07:02,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:07:02,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:07:02,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:02,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:07:02,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:02,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:07:02,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:02,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:07:02,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:02,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:07:02,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:02,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:07:02,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:02,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:07:02,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:02,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-07 00:07:02,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:02,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-07 00:07:02,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:02,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-07 00:07:02,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:02,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-07 00:07:02,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:02,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-07 00:07:02,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:02,515 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-07 00:07:02,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:07:02,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445029686] [2021-12-07 00:07:02,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445029686] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:07:02,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:07:02,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:07:02,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295067586] [2021-12-07 00:07:02,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:07:02,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:07:02,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:07:02,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:07:02,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:07:02,517 INFO L87 Difference]: Start difference. First operand 993 states and 1656 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-07 00:07:03,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:07:03,192 INFO L93 Difference]: Finished difference Result 2519 states and 4259 transitions. [2021-12-07 00:07:03,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 00:07:03,192 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 108 [2021-12-07 00:07:03,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:07:03,202 INFO L225 Difference]: With dead ends: 2519 [2021-12-07 00:07:03,202 INFO L226 Difference]: Without dead ends: 1657 [2021-12-07 00:07:03,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-07 00:07:03,205 INFO L933 BasicCegarLoop]: 479 mSDtfsCounter, 789 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 739 mSolverCounterSat, 381 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 1232 SdHoareTripleChecker+Invalid, 1120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 381 IncrementalHoareTripleChecker+Valid, 739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-07 00:07:03,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [805 Valid, 1232 Invalid, 1120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [381 Valid, 739 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-07 00:07:03,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1657 states. [2021-12-07 00:07:03,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1657 to 1526. [2021-12-07 00:07:03,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1526 states, 1232 states have (on average 1.6014610389610389) internal successors, (1973), 1237 states have internal predecessors, (1973), 274 states have call successors, (274), 15 states have call predecessors, (274), 19 states have return successors, (305), 273 states have call predecessors, (305), 273 states have call successors, (305) [2021-12-07 00:07:03,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1526 states to 1526 states and 2552 transitions. [2021-12-07 00:07:03,304 INFO L78 Accepts]: Start accepts. Automaton has 1526 states and 2552 transitions. Word has length 108 [2021-12-07 00:07:03,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:07:03,304 INFO L470 AbstractCegarLoop]: Abstraction has 1526 states and 2552 transitions. [2021-12-07 00:07:03,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-07 00:07:03,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1526 states and 2552 transitions. [2021-12-07 00:07:03,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-07 00:07:03,309 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:07:03,309 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-07 00:07:03,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-07 00:07:03,310 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:07:03,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:07:03,310 INFO L85 PathProgramCache]: Analyzing trace with hash -997062983, now seen corresponding path program 1 times [2021-12-07 00:07:03,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:07:03,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753703086] [2021-12-07 00:07:03,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:07:03,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:07:03,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:03,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:07:03,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:03,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:07:03,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:03,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:07:03,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:03,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:07:03,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:03,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:07:03,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:03,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:07:03,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:03,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-07 00:07:03,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:03,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-07 00:07:03,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:03,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-07 00:07:03,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:03,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-07 00:07:03,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:03,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-07 00:07:03,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:03,375 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-07 00:07:03,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:07:03,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753703086] [2021-12-07 00:07:03,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753703086] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:07:03,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:07:03,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:07:03,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044194476] [2021-12-07 00:07:03,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:07:03,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:07:03,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:07:03,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:07:03,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:07:03,376 INFO L87 Difference]: Start difference. First operand 1526 states and 2552 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-07 00:07:04,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:07:04,030 INFO L93 Difference]: Finished difference Result 3726 states and 6345 transitions. [2021-12-07 00:07:04,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 00:07:04,030 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 109 [2021-12-07 00:07:04,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:07:04,048 INFO L225 Difference]: With dead ends: 3726 [2021-12-07 00:07:04,048 INFO L226 Difference]: Without dead ends: 2466 [2021-12-07 00:07:04,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-07 00:07:04,054 INFO L933 BasicCegarLoop]: 480 mSDtfsCounter, 785 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 373 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 800 SdHoareTripleChecker+Valid, 1232 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 373 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-07 00:07:04,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [800 Valid, 1232 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [373 Valid, 741 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-07 00:07:04,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2466 states. [2021-12-07 00:07:04,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2466 to 2335. [2021-12-07 00:07:04,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2335 states, 1918 states have (on average 1.6058394160583942) internal successors, (3080), 1923 states have internal predecessors, (3080), 397 states have call successors, (397), 15 states have call predecessors, (397), 19 states have return successors, (444), 396 states have call predecessors, (444), 396 states have call successors, (444) [2021-12-07 00:07:04,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2335 states to 2335 states and 3921 transitions. [2021-12-07 00:07:04,195 INFO L78 Accepts]: Start accepts. Automaton has 2335 states and 3921 transitions. Word has length 109 [2021-12-07 00:07:04,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:07:04,196 INFO L470 AbstractCegarLoop]: Abstraction has 2335 states and 3921 transitions. [2021-12-07 00:07:04,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-07 00:07:04,196 INFO L276 IsEmpty]: Start isEmpty. Operand 2335 states and 3921 transitions. [2021-12-07 00:07:04,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-07 00:07:04,201 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:07:04,201 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-07 00:07:04,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-07 00:07:04,201 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:07:04,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:07:04,202 INFO L85 PathProgramCache]: Analyzing trace with hash 699673466, now seen corresponding path program 1 times [2021-12-07 00:07:04,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:07:04,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188532439] [2021-12-07 00:07:04,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:07:04,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:07:04,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:04,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:07:04,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:04,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:07:04,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:04,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:07:04,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:04,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:07:04,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:04,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:07:04,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:04,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:07:04,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:04,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-07 00:07:04,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:04,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-07 00:07:04,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:04,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-07 00:07:04,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:04,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-07 00:07:04,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:04,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-07 00:07:04,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:04,268 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-07 00:07:04,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:07:04,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188532439] [2021-12-07 00:07:04,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188532439] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:07:04,269 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:07:04,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:07:04,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483702982] [2021-12-07 00:07:04,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:07:04,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:07:04,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:07:04,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:07:04,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:07:04,271 INFO L87 Difference]: Start difference. First operand 2335 states and 3921 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-07 00:07:05,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:07:05,021 INFO L93 Difference]: Finished difference Result 5610 states and 9605 transitions. [2021-12-07 00:07:05,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 00:07:05,022 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 110 [2021-12-07 00:07:05,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:07:05,041 INFO L225 Difference]: With dead ends: 5610 [2021-12-07 00:07:05,041 INFO L226 Difference]: Without dead ends: 3760 [2021-12-07 00:07:05,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-07 00:07:05,046 INFO L933 BasicCegarLoop]: 480 mSDtfsCounter, 785 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 373 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 801 SdHoareTripleChecker+Valid, 1234 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 373 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-07 00:07:05,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [801 Valid, 1234 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [373 Valid, 743 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-07 00:07:05,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3760 states. [2021-12-07 00:07:05,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3760 to 3629. [2021-12-07 00:07:05,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3629 states, 3033 states have (on average 1.6083086053412463) internal successors, (4878), 3038 states have internal predecessors, (4878), 576 states have call successors, (576), 15 states have call predecessors, (576), 19 states have return successors, (649), 575 states have call predecessors, (649), 575 states have call successors, (649) [2021-12-07 00:07:05,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3629 states to 3629 states and 6103 transitions. [2021-12-07 00:07:05,239 INFO L78 Accepts]: Start accepts. Automaton has 3629 states and 6103 transitions. Word has length 110 [2021-12-07 00:07:05,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:07:05,240 INFO L470 AbstractCegarLoop]: Abstraction has 3629 states and 6103 transitions. [2021-12-07 00:07:05,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-07 00:07:05,240 INFO L276 IsEmpty]: Start isEmpty. Operand 3629 states and 6103 transitions. [2021-12-07 00:07:05,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-07 00:07:05,245 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:07:05,245 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-07 00:07:05,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-07 00:07:05,245 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:07:05,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:07:05,246 INFO L85 PathProgramCache]: Analyzing trace with hash -293605899, now seen corresponding path program 1 times [2021-12-07 00:07:05,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:07:05,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069218109] [2021-12-07 00:07:05,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:07:05,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:07:05,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:05,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:07:05,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:05,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:07:05,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:05,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:07:05,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:05,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:07:05,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:05,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:07:05,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:05,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:07:05,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:05,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-07 00:07:05,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:05,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-07 00:07:05,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:05,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-07 00:07:05,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:05,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-07 00:07:05,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:05,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-07 00:07:05,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:05,312 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-07 00:07:05,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:07:05,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069218109] [2021-12-07 00:07:05,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069218109] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:07:05,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:07:05,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:07:05,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766498122] [2021-12-07 00:07:05,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:07:05,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:07:05,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:07:05,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:07:05,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:07:05,314 INFO L87 Difference]: Start difference. First operand 3629 states and 6103 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-07 00:07:06,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:07:06,147 INFO L93 Difference]: Finished difference Result 8713 states and 14969 transitions. [2021-12-07 00:07:06,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 00:07:06,147 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 111 [2021-12-07 00:07:06,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:07:06,176 INFO L225 Difference]: With dead ends: 8713 [2021-12-07 00:07:06,177 INFO L226 Difference]: Without dead ends: 5901 [2021-12-07 00:07:06,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-07 00:07:06,183 INFO L933 BasicCegarLoop]: 489 mSDtfsCounter, 783 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 377 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 799 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 1132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 377 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-07 00:07:06,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [799 Valid, 1258 Invalid, 1132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [377 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-07 00:07:06,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5901 states. [2021-12-07 00:07:06,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5901 to 5770. [2021-12-07 00:07:06,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5770 states, 4798 states have (on average 1.6015006252605253) internal successors, (7684), 4803 states have internal predecessors, (7684), 952 states have call successors, (952), 15 states have call predecessors, (952), 19 states have return successors, (1069), 951 states have call predecessors, (1069), 951 states have call successors, (1069) [2021-12-07 00:07:06,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5770 states to 5770 states and 9705 transitions. [2021-12-07 00:07:06,489 INFO L78 Accepts]: Start accepts. Automaton has 5770 states and 9705 transitions. Word has length 111 [2021-12-07 00:07:06,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:07:06,489 INFO L470 AbstractCegarLoop]: Abstraction has 5770 states and 9705 transitions. [2021-12-07 00:07:06,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-07 00:07:06,489 INFO L276 IsEmpty]: Start isEmpty. Operand 5770 states and 9705 transitions. [2021-12-07 00:07:06,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-07 00:07:06,496 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:07:06,496 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-07 00:07:06,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-07 00:07:06,496 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:07:06,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:07:06,496 INFO L85 PathProgramCache]: Analyzing trace with hash 298768446, now seen corresponding path program 1 times [2021-12-07 00:07:06,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:07:06,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431555878] [2021-12-07 00:07:06,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:07:06,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:07:06,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:06,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:07:06,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:06,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:07:06,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:06,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:07:06,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:06,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:07:06,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:06,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:07:06,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:06,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:07:06,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:06,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-07 00:07:06,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:06,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-07 00:07:06,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:06,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-07 00:07:06,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:06,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-07 00:07:06,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:06,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-07 00:07:06,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:06,561 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-07 00:07:06,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:07:06,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431555878] [2021-12-07 00:07:06,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431555878] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:07:06,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:07:06,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:07:06,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6158066] [2021-12-07 00:07:06,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:07:06,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:07:06,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:07:06,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:07:06,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:07:06,563 INFO L87 Difference]: Start difference. First operand 5770 states and 9705 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-07 00:07:07,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:07:07,536 INFO L93 Difference]: Finished difference Result 14330 states and 24582 transitions. [2021-12-07 00:07:07,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 00:07:07,538 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 112 [2021-12-07 00:07:07,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:07:07,576 INFO L225 Difference]: With dead ends: 14330 [2021-12-07 00:07:07,576 INFO L226 Difference]: Without dead ends: 9779 [2021-12-07 00:07:07,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-07 00:07:07,587 INFO L933 BasicCegarLoop]: 476 mSDtfsCounter, 782 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 381 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 1224 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 381 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-07 00:07:07,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [798 Valid, 1224 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [381 Valid, 735 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-07 00:07:07,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9779 states. [2021-12-07 00:07:08,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9779 to 9648. [2021-12-07 00:07:08,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9648 states, 8070 states have (on average 1.5988847583643122) internal successors, (12903), 8075 states have internal predecessors, (12903), 1558 states have call successors, (1558), 15 states have call predecessors, (1558), 19 states have return successors, (1753), 1557 states have call predecessors, (1753), 1557 states have call successors, (1753) [2021-12-07 00:07:08,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9648 states to 9648 states and 16214 transitions. [2021-12-07 00:07:08,118 INFO L78 Accepts]: Start accepts. Automaton has 9648 states and 16214 transitions. Word has length 112 [2021-12-07 00:07:08,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:07:08,118 INFO L470 AbstractCegarLoop]: Abstraction has 9648 states and 16214 transitions. [2021-12-07 00:07:08,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-07 00:07:08,118 INFO L276 IsEmpty]: Start isEmpty. Operand 9648 states and 16214 transitions. [2021-12-07 00:07:08,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-07 00:07:08,126 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:07:08,127 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-07 00:07:08,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-07 00:07:08,127 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:07:08,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:07:08,127 INFO L85 PathProgramCache]: Analyzing trace with hash 374256355, now seen corresponding path program 1 times [2021-12-07 00:07:08,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:07:08,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100541438] [2021-12-07 00:07:08,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:07:08,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:07:08,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:08,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:07:08,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:08,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:07:08,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:08,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:07:08,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:08,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:07:08,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:08,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:07:08,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:08,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:07:08,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:08,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-07 00:07:08,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:08,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-07 00:07:08,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:08,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-07 00:07:08,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:08,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-07 00:07:08,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:08,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-07 00:07:08,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:08,190 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-07 00:07:08,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:07:08,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100541438] [2021-12-07 00:07:08,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100541438] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:07:08,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:07:08,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:07:08,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413747271] [2021-12-07 00:07:08,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:07:08,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:07:08,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:07:08,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:07:08,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:07:08,192 INFO L87 Difference]: Start difference. First operand 9648 states and 16214 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-07 00:07:09,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:07:09,427 INFO L93 Difference]: Finished difference Result 25039 states and 42863 transitions. [2021-12-07 00:07:09,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 00:07:09,428 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 113 [2021-12-07 00:07:09,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:07:09,476 INFO L225 Difference]: With dead ends: 25039 [2021-12-07 00:07:09,476 INFO L226 Difference]: Without dead ends: 17092 [2021-12-07 00:07:09,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-07 00:07:09,497 INFO L933 BasicCegarLoop]: 495 mSDtfsCounter, 777 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 381 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 1292 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 381 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-07 00:07:09,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [792 Valid, 1292 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [381 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-07 00:07:09,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17092 states. [2021-12-07 00:07:10,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17092 to 16961. [2021-12-07 00:07:10,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16961 states, 14180 states have (on average 1.5901974612129761) internal successors, (22549), 14185 states have internal predecessors, (22549), 2761 states have call successors, (2761), 15 states have call predecessors, (2761), 19 states have return successors, (3100), 2760 states have call predecessors, (3100), 2760 states have call successors, (3100) [2021-12-07 00:07:10,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16961 states to 16961 states and 28410 transitions. [2021-12-07 00:07:10,330 INFO L78 Accepts]: Start accepts. Automaton has 16961 states and 28410 transitions. Word has length 113 [2021-12-07 00:07:10,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:07:10,330 INFO L470 AbstractCegarLoop]: Abstraction has 16961 states and 28410 transitions. [2021-12-07 00:07:10,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-07 00:07:10,331 INFO L276 IsEmpty]: Start isEmpty. Operand 16961 states and 28410 transitions. [2021-12-07 00:07:10,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-07 00:07:10,341 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:07:10,341 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-07 00:07:10,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-07 00:07:10,341 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:07:10,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:07:10,342 INFO L85 PathProgramCache]: Analyzing trace with hash -791689921, now seen corresponding path program 1 times [2021-12-07 00:07:10,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:07:10,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257788432] [2021-12-07 00:07:10,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:07:10,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:07:10,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:10,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:07:10,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:10,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:07:10,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:10,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:07:10,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:10,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:07:10,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:10,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:07:10,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:10,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:07:10,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:10,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-07 00:07:10,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:10,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-07 00:07:10,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:10,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-07 00:07:10,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:10,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-07 00:07:10,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:10,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-07 00:07:10,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:10,442 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-07 00:07:10,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:07:10,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257788432] [2021-12-07 00:07:10,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257788432] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:07:10,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:07:10,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:07:10,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137273619] [2021-12-07 00:07:10,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:07:10,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:07:10,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:07:10,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:07:10,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:07:10,444 INFO L87 Difference]: Start difference. First operand 16961 states and 28410 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-07 00:07:12,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:07:12,372 INFO L93 Difference]: Finished difference Result 45015 states and 76876 transitions. [2021-12-07 00:07:12,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 00:07:12,372 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 114 [2021-12-07 00:07:12,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:07:12,446 INFO L225 Difference]: With dead ends: 45015 [2021-12-07 00:07:12,446 INFO L226 Difference]: Without dead ends: 30432 [2021-12-07 00:07:12,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-07 00:07:12,470 INFO L933 BasicCegarLoop]: 478 mSDtfsCounter, 777 mSDsluCounter, 749 mSDsCounter, 0 mSdLazyCounter, 739 mSolverCounterSat, 381 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 1227 SdHoareTripleChecker+Invalid, 1120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 381 IncrementalHoareTripleChecker+Valid, 739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-07 00:07:12,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [793 Valid, 1227 Invalid, 1120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [381 Valid, 739 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-07 00:07:12,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30432 states. [2021-12-07 00:07:13,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30432 to 30301. [2021-12-07 00:07:14,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30301 states, 25481 states have (on average 1.5859660138927043) internal successors, (40412), 25486 states have internal predecessors, (40412), 4800 states have call successors, (4800), 15 states have call predecessors, (4800), 19 states have return successors, (5413), 4799 states have call predecessors, (5413), 4799 states have call successors, (5413) [2021-12-07 00:07:14,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30301 states to 30301 states and 50625 transitions. [2021-12-07 00:07:14,080 INFO L78 Accepts]: Start accepts. Automaton has 30301 states and 50625 transitions. Word has length 114 [2021-12-07 00:07:14,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:07:14,081 INFO L470 AbstractCegarLoop]: Abstraction has 30301 states and 50625 transitions. [2021-12-07 00:07:14,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-07 00:07:14,081 INFO L276 IsEmpty]: Start isEmpty. Operand 30301 states and 50625 transitions. [2021-12-07 00:07:14,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-07 00:07:14,093 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:07:14,093 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-07 00:07:14,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-07 00:07:14,093 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:07:14,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:07:14,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1052143685, now seen corresponding path program 1 times [2021-12-07 00:07:14,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:07:14,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640588956] [2021-12-07 00:07:14,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:07:14,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:07:14,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:14,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:07:14,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:14,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:07:14,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:14,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:07:14,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:14,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:07:14,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:14,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:07:14,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:14,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:07:14,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:14,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-07 00:07:14,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:14,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-07 00:07:14,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:14,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-07 00:07:14,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:14,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-07 00:07:14,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:14,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-07 00:07:14,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:14,153 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-07 00:07:14,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:07:14,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640588956] [2021-12-07 00:07:14,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640588956] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:07:14,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:07:14,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:07:14,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195085239] [2021-12-07 00:07:14,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:07:14,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:07:14,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:07:14,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:07:14,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:07:14,154 INFO L87 Difference]: Start difference. First operand 30301 states and 50625 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-07 00:07:16,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:07:16,825 INFO L93 Difference]: Finished difference Result 82752 states and 140400 transitions. [2021-12-07 00:07:16,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 00:07:16,825 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 115 [2021-12-07 00:07:16,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:07:16,973 INFO L225 Difference]: With dead ends: 82752 [2021-12-07 00:07:16,973 INFO L226 Difference]: Without dead ends: 55641 [2021-12-07 00:07:17,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-07 00:07:17,027 INFO L933 BasicCegarLoop]: 479 mSDtfsCounter, 774 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 739 mSolverCounterSat, 381 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 1233 SdHoareTripleChecker+Invalid, 1120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 381 IncrementalHoareTripleChecker+Valid, 739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-07 00:07:17,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [789 Valid, 1233 Invalid, 1120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [381 Valid, 739 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-07 00:07:17,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55641 states. [2021-12-07 00:07:19,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55641 to 55510. [2021-12-07 00:07:19,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55510 states, 46975 states have (on average 1.580478978179883) internal successors, (74243), 46980 states have internal predecessors, (74243), 8515 states have call successors, (8515), 15 states have call predecessors, (8515), 19 states have return successors, (9660), 8514 states have call predecessors, (9660), 8514 states have call successors, (9660) [2021-12-07 00:07:20,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55510 states to 55510 states and 92418 transitions. [2021-12-07 00:07:20,062 INFO L78 Accepts]: Start accepts. Automaton has 55510 states and 92418 transitions. Word has length 115 [2021-12-07 00:07:20,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:07:20,063 INFO L470 AbstractCegarLoop]: Abstraction has 55510 states and 92418 transitions. [2021-12-07 00:07:20,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-07 00:07:20,063 INFO L276 IsEmpty]: Start isEmpty. Operand 55510 states and 92418 transitions. [2021-12-07 00:07:20,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-07 00:07:20,078 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:07:20,078 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-07 00:07:20,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-07 00:07:20,078 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:07:20,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:07:20,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1724726367, now seen corresponding path program 1 times [2021-12-07 00:07:20,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:07:20,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764745619] [2021-12-07 00:07:20,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:07:20,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:07:20,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:20,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:07:20,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:20,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:07:20,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:20,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:07:20,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:20,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:07:20,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:20,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:07:20,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:20,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:07:20,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:20,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-07 00:07:20,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:20,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-07 00:07:20,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:20,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-07 00:07:20,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:20,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-07 00:07:20,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:20,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-07 00:07:20,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:20,147 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-07 00:07:20,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:07:20,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764745619] [2021-12-07 00:07:20,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764745619] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:07:20,147 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:07:20,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:07:20,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522582401] [2021-12-07 00:07:20,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:07:20,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:07:20,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:07:20,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:07:20,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:07:20,149 INFO L87 Difference]: Start difference. First operand 55510 states and 92418 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-07 00:07:24,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:07:24,952 INFO L93 Difference]: Finished difference Result 103808 states and 176386 transitions. [2021-12-07 00:07:24,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 00:07:24,953 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 116 [2021-12-07 00:07:24,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:07:25,305 INFO L225 Difference]: With dead ends: 103808 [2021-12-07 00:07:25,305 INFO L226 Difference]: Without dead ends: 103715 [2021-12-07 00:07:25,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-07 00:07:25,349 INFO L933 BasicCegarLoop]: 480 mSDtfsCounter, 773 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 381 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 1233 SdHoareTripleChecker+Invalid, 1126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 381 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-07 00:07:25,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [789 Valid, 1233 Invalid, 1126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [381 Valid, 745 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-07 00:07:25,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103715 states. [2021-12-07 00:07:30,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103715 to 103584. [2021-12-07 00:07:30,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103584 states, 88250 states have (on average 1.573643059490085) internal successors, (138874), 88255 states have internal predecessors, (138874), 15314 states have call successors, (15314), 15 states have call predecessors, (15314), 19 states have return successors, (17505), 15313 states have call predecessors, (17505), 15313 states have call successors, (17505) [2021-12-07 00:07:30,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103584 states to 103584 states and 171693 transitions. [2021-12-07 00:07:30,395 INFO L78 Accepts]: Start accepts. Automaton has 103584 states and 171693 transitions. Word has length 116 [2021-12-07 00:07:30,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:07:30,395 INFO L470 AbstractCegarLoop]: Abstraction has 103584 states and 171693 transitions. [2021-12-07 00:07:30,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-07 00:07:30,395 INFO L276 IsEmpty]: Start isEmpty. Operand 103584 states and 171693 transitions. [2021-12-07 00:07:30,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-07 00:07:30,412 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:07:30,412 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-07 00:07:30,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-07 00:07:30,412 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:07:30,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:07:30,412 INFO L85 PathProgramCache]: Analyzing trace with hash 726867652, now seen corresponding path program 1 times [2021-12-07 00:07:30,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:07:30,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246226120] [2021-12-07 00:07:30,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:07:30,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:07:30,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:30,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:07:30,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:30,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:07:30,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:30,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:07:30,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:30,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:07:30,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:30,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:07:30,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:30,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:07:30,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:30,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-07 00:07:30,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:30,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-07 00:07:30,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:30,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-07 00:07:30,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:30,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-07 00:07:30,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:30,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-07 00:07:30,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:30,568 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-07 00:07:30,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:07:30,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246226120] [2021-12-07 00:07:30,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246226120] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:07:30,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508031469] [2021-12-07 00:07:30,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:07:30,569 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:07:30,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8ded7ca-bddb-441a-bfff-046a6784df0d/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:07:30,570 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8ded7ca-bddb-441a-bfff-046a6784df0d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:07:30,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8ded7ca-bddb-441a-bfff-046a6784df0d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-07 00:07:30,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:30,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 1023 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-07 00:07:30,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:07:31,067 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-07 00:07:31,067 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:07:31,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508031469] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:07:31,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:07:31,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [19] total 29 [2021-12-07 00:07:31,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557600954] [2021-12-07 00:07:31,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:07:31,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-07 00:07:31,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:07:31,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-07 00:07:31,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=744, Unknown=0, NotChecked=0, Total=812 [2021-12-07 00:07:31,068 INFO L87 Difference]: Start difference. First operand 103584 states and 171693 transitions. Second operand has 12 states, 11 states have (on average 7.909090909090909) internal successors, (87), 10 states have internal predecessors, (87), 5 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2021-12-07 00:07:35,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:07:35,636 INFO L93 Difference]: Finished difference Result 103924 states and 172164 transitions. [2021-12-07 00:07:35,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-07 00:07:35,637 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.909090909090909) internal successors, (87), 10 states have internal predecessors, (87), 5 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) Word has length 117 [2021-12-07 00:07:35,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:07:36,007 INFO L225 Difference]: With dead ends: 103924 [2021-12-07 00:07:36,007 INFO L226 Difference]: Without dead ends: 103837 [2021-12-07 00:07:36,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=197, Invalid=1609, Unknown=0, NotChecked=0, Total=1806 [2021-12-07 00:07:36,050 INFO L933 BasicCegarLoop]: 420 mSDtfsCounter, 737 mSDsluCounter, 3420 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 743 SdHoareTripleChecker+Valid, 3840 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-07 00:07:36,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [743 Valid, 3840 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-07 00:07:36,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103837 states. [2021-12-07 00:07:40,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103837 to 103734. [2021-12-07 00:07:41,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103734 states, 88364 states have (on average 1.5733669820288805) internal successors, (139029), 88370 states have internal predecessors, (139029), 15338 states have call successors, (15338), 24 states have call predecessors, (15338), 31 states have return successors, (17537), 15339 states have call predecessors, (17537), 15336 states have call successors, (17537) [2021-12-07 00:07:41,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103734 states to 103734 states and 171904 transitions. [2021-12-07 00:07:41,308 INFO L78 Accepts]: Start accepts. Automaton has 103734 states and 171904 transitions. Word has length 117 [2021-12-07 00:07:41,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:07:41,308 INFO L470 AbstractCegarLoop]: Abstraction has 103734 states and 171904 transitions. [2021-12-07 00:07:41,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.909090909090909) internal successors, (87), 10 states have internal predecessors, (87), 5 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2021-12-07 00:07:41,308 INFO L276 IsEmpty]: Start isEmpty. Operand 103734 states and 171904 transitions. [2021-12-07 00:07:41,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-07 00:07:41,321 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:07:41,321 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-07 00:07:41,343 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8ded7ca-bddb-441a-bfff-046a6784df0d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-07 00:07:41,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8ded7ca-bddb-441a-bfff-046a6784df0d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-12-07 00:07:41,523 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:07:41,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:07:41,523 INFO L85 PathProgramCache]: Analyzing trace with hash 2131257369, now seen corresponding path program 1 times [2021-12-07 00:07:41,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:07:41,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958698721] [2021-12-07 00:07:41,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:07:41,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:07:41,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:41,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:07:41,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:41,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:07:41,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:41,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:07:41,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:41,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:07:41,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:41,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:07:41,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:41,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:07:41,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:41,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-07 00:07:41,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:41,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-07 00:07:41,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:41,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-07 00:07:41,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:41,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-07 00:07:41,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:41,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-07 00:07:41,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:41,628 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-07 00:07:41,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:07:41,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958698721] [2021-12-07 00:07:41,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958698721] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:07:41,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:07:41,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-07 00:07:41,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83470665] [2021-12-07 00:07:41,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:07:41,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-07 00:07:41,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:07:41,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-07 00:07:41,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-07 00:07:41,629 INFO L87 Difference]: Start difference. First operand 103734 states and 171904 transitions. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-07 00:07:51,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:07:51,260 INFO L93 Difference]: Finished difference Result 204741 states and 345841 transitions. [2021-12-07 00:07:51,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-07 00:07:51,261 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 118 [2021-12-07 00:07:51,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:07:51,918 INFO L225 Difference]: With dead ends: 204741 [2021-12-07 00:07:51,918 INFO L226 Difference]: Without dead ends: 204519 [2021-12-07 00:07:51,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=312, Invalid=810, Unknown=0, NotChecked=0, Total=1122 [2021-12-07 00:07:51,986 INFO L933 BasicCegarLoop]: 526 mSDtfsCounter, 1947 mSDsluCounter, 1293 mSDsCounter, 0 mSdLazyCounter, 1857 mSolverCounterSat, 1030 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1962 SdHoareTripleChecker+Valid, 1819 SdHoareTripleChecker+Invalid, 2887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1030 IncrementalHoareTripleChecker+Valid, 1857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-07 00:07:51,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1962 Valid, 1819 Invalid, 2887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1030 Valid, 1857 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-07 00:07:52,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204519 states. [2021-12-07 00:08:02,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204519 to 203335. [2021-12-07 00:08:02,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203335 states, 173245 states have (on average 1.5747929233166902) internal successors, (272825), 173256 states have internal predecessors, (272825), 30029 states have call successors, (30029), 45 states have call predecessors, (30029), 60 states have return successors, (32253), 30033 states have call predecessors, (32253), 30025 states have call successors, (32253) [2021-12-07 00:08:03,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203335 states to 203335 states and 335107 transitions. [2021-12-07 00:08:03,240 INFO L78 Accepts]: Start accepts. Automaton has 203335 states and 335107 transitions. Word has length 118 [2021-12-07 00:08:03,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:08:03,240 INFO L470 AbstractCegarLoop]: Abstraction has 203335 states and 335107 transitions. [2021-12-07 00:08:03,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-07 00:08:03,241 INFO L276 IsEmpty]: Start isEmpty. Operand 203335 states and 335107 transitions. [2021-12-07 00:08:03,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-07 00:08:03,261 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:08:03,261 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-07 00:08:03,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-07 00:08:03,262 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:08:03,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:08:03,262 INFO L85 PathProgramCache]: Analyzing trace with hash 229960127, now seen corresponding path program 1 times [2021-12-07 00:08:03,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:08:03,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313101600] [2021-12-07 00:08:03,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:08:03,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:08:03,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:08:03,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:08:03,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:08:03,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:08:03,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:08:03,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:08:03,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:08:03,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:08:03,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:08:03,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:08:03,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:08:03,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:08:03,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:08:03,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-07 00:08:03,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:08:03,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-07 00:08:03,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:08:03,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-07 00:08:03,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:08:03,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-07 00:08:03,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:08:03,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-07 00:08:03,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:08:03,360 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-07 00:08:03,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:08:03,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313101600] [2021-12-07 00:08:03,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313101600] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:08:03,360 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:08:03,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-07 00:08:03,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646219764] [2021-12-07 00:08:03,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:08:03,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-07 00:08:03,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:08:03,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-07 00:08:03,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2021-12-07 00:08:03,361 INFO L87 Difference]: Start difference. First operand 203335 states and 335107 transitions. Second operand has 14 states, 12 states have (on average 6.75) internal successors, (81), 9 states have internal predecessors, (81), 6 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) [2021-12-07 00:08:13,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:08:13,531 INFO L93 Difference]: Finished difference Result 205075 states and 344218 transitions. [2021-12-07 00:08:13,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-12-07 00:08:13,532 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 6.75) internal successors, (81), 9 states have internal predecessors, (81), 6 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) Word has length 118 [2021-12-07 00:08:13,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:08:14,183 INFO L225 Difference]: With dead ends: 205075 [2021-12-07 00:08:14,183 INFO L226 Difference]: Without dead ends: 203919 [2021-12-07 00:08:14,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=339, Invalid=1301, Unknown=0, NotChecked=0, Total=1640 [2021-12-07 00:08:14,242 INFO L933 BasicCegarLoop]: 452 mSDtfsCounter, 1129 mSDsluCounter, 2352 mSDsCounter, 0 mSdLazyCounter, 3120 mSolverCounterSat, 594 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1129 SdHoareTripleChecker+Valid, 2804 SdHoareTripleChecker+Invalid, 3714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 594 IncrementalHoareTripleChecker+Valid, 3120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:08:14,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1129 Valid, 2804 Invalid, 3714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [594 Valid, 3120 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-07 00:08:14,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203919 states. [2021-12-07 00:08:24,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203919 to 203311. [2021-12-07 00:08:24,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203311 states, 173233 states have (on average 1.5747865591428885) internal successors, (272805), 173241 states have internal predecessors, (272805), 30019 states have call successors, (30019), 49 states have call predecessors, (30019), 58 states have return successors, (32229), 30020 states have call predecessors, (32229), 30015 states have call successors, (32229) [2021-12-07 00:08:25,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203311 states to 203311 states and 335053 transitions. [2021-12-07 00:08:25,506 INFO L78 Accepts]: Start accepts. Automaton has 203311 states and 335053 transitions. Word has length 118 [2021-12-07 00:08:25,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:08:25,507 INFO L470 AbstractCegarLoop]: Abstraction has 203311 states and 335053 transitions. [2021-12-07 00:08:25,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 6.75) internal successors, (81), 9 states have internal predecessors, (81), 6 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) [2021-12-07 00:08:25,507 INFO L276 IsEmpty]: Start isEmpty. Operand 203311 states and 335053 transitions. [2021-12-07 00:08:25,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-07 00:08:25,529 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:08:25,529 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-07 00:08:25,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-07 00:08:25,529 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:08:25,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:08:25,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1135925548, now seen corresponding path program 1 times [2021-12-07 00:08:25,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:08:25,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961782594] [2021-12-07 00:08:25,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:08:25,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:08:25,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:08:25,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:08:25,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:08:25,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:08:25,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:08:25,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:08:25,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:08:25,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:08:25,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:08:25,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:08:25,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:08:25,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:08:25,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:08:25,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-07 00:08:25,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:08:25,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-07 00:08:25,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:08:25,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-07 00:08:25,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:08:25,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-07 00:08:25,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:08:25,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-07 00:08:25,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:08:25,601 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-07 00:08:25,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:08:25,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961782594] [2021-12-07 00:08:25,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961782594] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:08:25,601 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:08:25,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-07 00:08:25,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766749953] [2021-12-07 00:08:25,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:08:25,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-07 00:08:25,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:08:25,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-07 00:08:25,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-07 00:08:25,602 INFO L87 Difference]: Start difference. First operand 203311 states and 335053 transitions. Second operand has 9 states, 8 states have (on average 10.125) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-07 00:08:34,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:08:34,036 INFO L93 Difference]: Finished difference Result 203771 states and 342133 transitions. [2021-12-07 00:08:34,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-07 00:08:34,037 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.125) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 118 [2021-12-07 00:08:34,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:08:34,659 INFO L225 Difference]: With dead ends: 203771 [2021-12-07 00:08:34,659 INFO L226 Difference]: Without dead ends: 203551 [2021-12-07 00:08:34,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=141, Invalid=365, Unknown=0, NotChecked=0, Total=506 [2021-12-07 00:08:34,726 INFO L933 BasicCegarLoop]: 451 mSDtfsCounter, 675 mSDsluCounter, 1199 mSDsCounter, 0 mSdLazyCounter, 1250 mSolverCounterSat, 314 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 1650 SdHoareTripleChecker+Invalid, 1564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 314 IncrementalHoareTripleChecker+Valid, 1250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-07 00:08:34,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [675 Valid, 1650 Invalid, 1564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [314 Valid, 1250 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-07 00:08:34,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203551 states. [2021-12-07 00:08:45,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203551 to 203201. [2021-12-07 00:08:45,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203201 states, 173151 states have (on average 1.5748970551714978) internal successors, (272695), 173157 states have internal predecessors, (272695), 29995 states have call successors, (29995), 47 states have call predecessors, (29995), 54 states have return successors, (32193), 29996 states have call predecessors, (32193), 29991 states have call successors, (32193) [2021-12-07 00:08:45,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203201 states to 203201 states and 334883 transitions. [2021-12-07 00:08:45,926 INFO L78 Accepts]: Start accepts. Automaton has 203201 states and 334883 transitions. Word has length 118 [2021-12-07 00:08:45,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:08:45,926 INFO L470 AbstractCegarLoop]: Abstraction has 203201 states and 334883 transitions. [2021-12-07 00:08:45,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.125) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-07 00:08:45,926 INFO L276 IsEmpty]: Start isEmpty. Operand 203201 states and 334883 transitions. [2021-12-07 00:08:45,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-12-07 00:08:45,948 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:08:45,949 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-07 00:08:45,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-07 00:08:45,949 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:08:45,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:08:45,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1735098111, now seen corresponding path program 1 times [2021-12-07 00:08:45,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:08:45,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254161825] [2021-12-07 00:08:45,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:08:45,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:08:45,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:08:46,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:08:46,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:08:46,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:08:46,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:08:46,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:08:46,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:08:46,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:08:46,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:08:46,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:08:46,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:08:46,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:08:46,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:08:46,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-07 00:08:46,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:08:46,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-07 00:08:46,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:08:46,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-07 00:08:46,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:08:46,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-07 00:08:46,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:08:46,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-07 00:08:46,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:08:46,088 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-07 00:08:46,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:08:46,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254161825] [2021-12-07 00:08:46,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254161825] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:08:46,088 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:08:46,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-07 00:08:46,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842738953] [2021-12-07 00:08:46,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:08:46,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-07 00:08:46,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:08:46,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-07 00:08:46,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-12-07 00:08:46,089 INFO L87 Difference]: Start difference. First operand 203201 states and 334883 transitions. Second operand has 16 states, 15 states have (on average 5.466666666666667) internal successors, (82), 10 states have internal predecessors, (82), 5 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2021-12-07 00:08:56,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:08:56,373 INFO L93 Difference]: Finished difference Result 203891 states and 342230 transitions. [2021-12-07 00:08:56,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-12-07 00:08:56,374 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.466666666666667) internal successors, (82), 10 states have internal predecessors, (82), 5 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) Word has length 119 [2021-12-07 00:08:56,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:08:57,025 INFO L225 Difference]: With dead ends: 203891 [2021-12-07 00:08:57,025 INFO L226 Difference]: Without dead ends: 203528 [2021-12-07 00:08:57,096 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=500, Invalid=2362, Unknown=0, NotChecked=0, Total=2862 [2021-12-07 00:08:57,097 INFO L933 BasicCegarLoop]: 486 mSDtfsCounter, 1527 mSDsluCounter, 2365 mSDsCounter, 0 mSdLazyCounter, 3597 mSolverCounterSat, 796 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1543 SdHoareTripleChecker+Valid, 2851 SdHoareTripleChecker+Invalid, 4393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 796 IncrementalHoareTripleChecker+Valid, 3597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-07 00:08:57,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1543 Valid, 2851 Invalid, 4393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [796 Valid, 3597 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-07 00:08:57,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203528 states. [2021-12-07 00:09:07,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203528 to 203173. [2021-12-07 00:09:07,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203173 states, 173130 states have (on average 1.574897475885173) internal successors, (272662), 173136 states have internal predecessors, (272662), 29989 states have call successors, (29989), 47 states have call predecessors, (29989), 53 states have return successors, (32184), 29989 states have call predecessors, (32184), 29985 states have call successors, (32184) [2021-12-07 00:09:08,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203173 states to 203173 states and 334835 transitions. [2021-12-07 00:09:08,437 INFO L78 Accepts]: Start accepts. Automaton has 203173 states and 334835 transitions. Word has length 119 [2021-12-07 00:09:08,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:09:08,437 INFO L470 AbstractCegarLoop]: Abstraction has 203173 states and 334835 transitions. [2021-12-07 00:09:08,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.466666666666667) internal successors, (82), 10 states have internal predecessors, (82), 5 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2021-12-07 00:09:08,437 INFO L276 IsEmpty]: Start isEmpty. Operand 203173 states and 334835 transitions. [2021-12-07 00:09:08,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-07 00:09:08,477 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:09:08,478 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-07 00:09:08,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-07 00:09:08,478 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:09:08,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:09:08,478 INFO L85 PathProgramCache]: Analyzing trace with hash -2095265390, now seen corresponding path program 1 times [2021-12-07 00:09:08,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:09:08,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365564611] [2021-12-07 00:09:08,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:09:08,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:09:08,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:09:08,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:09:08,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:09:08,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:09:08,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:09:08,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:09:08,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:09:08,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:09:08,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:09:08,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:09:08,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:09:08,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:09:08,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:09:08,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-07 00:09:08,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:09:08,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-07 00:09:08,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:09:08,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-07 00:09:08,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:09:08,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-07 00:09:08,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:09:08,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-07 00:09:08,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:09:08,573 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-07 00:09:08,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:09:08,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365564611] [2021-12-07 00:09:08,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365564611] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:09:08,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:09:08,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-07 00:09:08,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381450187] [2021-12-07 00:09:08,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:09:08,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-07 00:09:08,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:09:08,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-07 00:09:08,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-07 00:09:08,575 INFO L87 Difference]: Start difference. First operand 203173 states and 334835 transitions. Second operand has 11 states, 11 states have (on average 7.818181818181818) internal successors, (86), 6 states have internal predecessors, (86), 1 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-07 00:09:19,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:09:19,007 INFO L93 Difference]: Finished difference Result 203588 states and 341865 transitions. [2021-12-07 00:09:19,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-07 00:09:19,007 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.818181818181818) internal successors, (86), 6 states have internal predecessors, (86), 1 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 128 [2021-12-07 00:09:19,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:09:19,008 INFO L225 Difference]: With dead ends: 203588 [2021-12-07 00:09:19,008 INFO L226 Difference]: Without dead ends: 0 [2021-12-07 00:09:19,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=135, Invalid=465, Unknown=0, NotChecked=0, Total=600 [2021-12-07 00:09:19,259 INFO L933 BasicCegarLoop]: 560 mSDtfsCounter, 950 mSDsluCounter, 1422 mSDsCounter, 0 mSdLazyCounter, 2399 mSolverCounterSat, 432 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 950 SdHoareTripleChecker+Valid, 1982 SdHoareTripleChecker+Invalid, 2831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 432 IncrementalHoareTripleChecker+Valid, 2399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:09:19,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [950 Valid, 1982 Invalid, 2831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [432 Valid, 2399 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-07 00:09:19,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-07 00:09:19,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-07 00:09:19,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:09:19,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-07 00:09:19,283 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 128 [2021-12-07 00:09:19,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:09:19,283 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-07 00:09:19,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.818181818181818) internal successors, (86), 6 states have internal predecessors, (86), 1 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-07 00:09:19,283 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-07 00:09:19,283 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-07 00:09:19,285 INFO L764 garLoopResultBuilder]: Registering result SAFE for location outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-07 00:09:19,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-07 00:09:19,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-07 00:15:04,578 WARN L227 SmtUtils]: Spent 5.75m on a formula simplification. DAG size of input: 2212 DAG size of output: 2211 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-07 00:18:56,875 WARN L227 SmtUtils]: Spent 3.87m on a formula simplification that was a NOOP. DAG size: 115 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)