./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec3_product31.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_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/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_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec3_product31.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/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_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/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 beb678f648eb46083c76f273f6eef79e0abada1343858eba26829a720997a379 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 23:30:32,788 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 23:30:32,789 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 23:30:32,812 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 23:30:32,812 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 23:30:32,813 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 23:30:32,815 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 23:30:32,817 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 23:30:32,818 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 23:30:32,819 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 23:30:32,820 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 23:30:32,821 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 23:30:32,821 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 23:30:32,822 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 23:30:32,824 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 23:30:32,825 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 23:30:32,826 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 23:30:32,827 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 23:30:32,828 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 23:30:32,830 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 23:30:32,832 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 23:30:32,833 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 23:30:32,834 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 23:30:32,835 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 23:30:32,838 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 23:30:32,838 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 23:30:32,839 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 23:30:32,840 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 23:30:32,840 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 23:30:32,841 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 23:30:32,841 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 23:30:32,842 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 23:30:32,843 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 23:30:32,844 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 23:30:32,845 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 23:30:32,845 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 23:30:32,846 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 23:30:32,846 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 23:30:32,846 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 23:30:32,847 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 23:30:32,847 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 23:30:32,848 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 23:30:32,866 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 23:30:32,866 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 23:30:32,867 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 23:30:32,867 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 23:30:32,867 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 23:30:32,868 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 23:30:32,868 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 23:30:32,868 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 23:30:32,868 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 23:30:32,869 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 23:30:32,869 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 23:30:32,869 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 23:30:32,869 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 23:30:32,869 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 23:30:32,869 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 23:30:32,869 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 23:30:32,870 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 23:30:32,870 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 23:30:32,870 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 23:30:32,870 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 23:30:32,870 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 23:30:32,870 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 23:30:32,870 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 23:30:32,871 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 23:30:32,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:30:32,871 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 23:30:32,871 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 23:30:32,871 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 23:30:32,871 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 23:30:32,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 23:30:32,872 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 23:30:32,872 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 23:30:32,872 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 23:30:32,872 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 23:30:32,872 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_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> beb678f648eb46083c76f273f6eef79e0abada1343858eba26829a720997a379 [2021-12-06 23:30:33,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 23:30:33,083 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 23:30:33,085 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 23:30:33,086 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 23:30:33,086 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 23:30:33,087 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/product-lines/email_spec3_product31.cil.c [2021-12-06 23:30:33,129 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/data/39f5ff42d/7aedafd5ba6c4d9996170647d7eeaa29/FLAG997e553b2 [2021-12-06 23:30:33,582 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 23:30:33,582 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/sv-benchmarks/c/product-lines/email_spec3_product31.cil.c [2021-12-06 23:30:33,598 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/data/39f5ff42d/7aedafd5ba6c4d9996170647d7eeaa29/FLAG997e553b2 [2021-12-06 23:30:33,608 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/data/39f5ff42d/7aedafd5ba6c4d9996170647d7eeaa29 [2021-12-06 23:30:33,610 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 23:30:33,610 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 23:30:33,612 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 23:30:33,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 23:30:33,614 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 23:30:33,615 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:30:33" (1/1) ... [2021-12-06 23:30:33,616 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2658e897 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:30:33, skipping insertion in model container [2021-12-06 23:30:33,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:30:33" (1/1) ... [2021-12-06 23:30:33,621 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 23:30:33,666 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 23:30:33,927 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_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/sv-benchmarks/c/product-lines/email_spec3_product31.cil.c[42138,42151] [2021-12-06 23:30:33,987 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:30:33,995 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 23:30:34,051 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_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/sv-benchmarks/c/product-lines/email_spec3_product31.cil.c[42138,42151] [2021-12-06 23:30:34,079 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:30:34,106 INFO L208 MainTranslator]: Completed translation [2021-12-06 23:30:34,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:30:34 WrapperNode [2021-12-06 23:30:34,106 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 23:30:34,107 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 23:30:34,107 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 23:30:34,107 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 23:30:34,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:30:34" (1/1) ... [2021-12-06 23:30:34,136 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:30:34" (1/1) ... [2021-12-06 23:30:34,191 INFO L137 Inliner]: procedures = 132, calls = 227, calls flagged for inlining = 61, calls inlined = 56, statements flattened = 1050 [2021-12-06 23:30:34,191 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 23:30:34,192 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 23:30:34,192 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 23:30:34,192 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 23:30:34,200 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:30:34" (1/1) ... [2021-12-06 23:30:34,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:30:34" (1/1) ... [2021-12-06 23:30:34,208 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:30:34" (1/1) ... [2021-12-06 23:30:34,208 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:30:34" (1/1) ... [2021-12-06 23:30:34,232 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:30:34" (1/1) ... [2021-12-06 23:30:34,243 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:30:34" (1/1) ... [2021-12-06 23:30:34,249 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:30:34" (1/1) ... [2021-12-06 23:30:34,259 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 23:30:34,260 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 23:30:34,261 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 23:30:34,261 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 23:30:34,262 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:30:34" (1/1) ... [2021-12-06 23:30:34,269 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:30:34,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:30:34,292 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 23:30:34,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 23:30:34,330 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-12-06 23:30:34,331 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-12-06 23:30:34,331 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-12-06 23:30:34,331 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-12-06 23:30:34,331 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-12-06 23:30:34,331 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-12-06 23:30:34,331 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-06 23:30:34,331 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-06 23:30:34,331 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-06 23:30:34,332 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-06 23:30:34,332 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-12-06 23:30:34,332 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-12-06 23:30:34,332 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-12-06 23:30:34,332 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-12-06 23:30:34,332 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-12-06 23:30:34,332 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-12-06 23:30:34,332 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-12-06 23:30:34,333 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-12-06 23:30:34,333 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-12-06 23:30:34,333 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-12-06 23:30:34,333 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-06 23:30:34,333 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-12-06 23:30:34,333 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-12-06 23:30:34,333 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-06 23:30:34,333 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-06 23:30:34,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 23:30:34,334 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-12-06 23:30:34,334 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-12-06 23:30:34,334 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-12-06 23:30:34,334 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-12-06 23:30:34,334 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-12-06 23:30:34,334 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-12-06 23:30:34,334 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-12-06 23:30:34,334 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-12-06 23:30:34,334 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-12-06 23:30:34,335 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-12-06 23:30:34,335 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-06 23:30:34,335 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-06 23:30:34,335 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-12-06 23:30:34,335 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-12-06 23:30:34,335 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-06 23:30:34,335 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-06 23:30:34,335 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-12-06 23:30:34,335 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-12-06 23:30:34,336 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-12-06 23:30:34,336 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-12-06 23:30:34,336 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-12-06 23:30:34,336 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-12-06 23:30:34,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 23:30:34,336 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-12-06 23:30:34,336 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-12-06 23:30:34,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 23:30:34,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 23:30:34,497 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 23:30:34,498 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 23:30:34,927 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 23:30:34,938 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 23:30:34,938 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 23:30:34,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:30:34 BoogieIcfgContainer [2021-12-06 23:30:34,940 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 23:30:34,942 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 23:30:34,942 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 23:30:34,944 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 23:30:34,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 11:30:33" (1/3) ... [2021-12-06 23:30:34,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d94e936 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:30:34, skipping insertion in model container [2021-12-06 23:30:34,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:30:34" (2/3) ... [2021-12-06 23:30:34,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d94e936 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:30:34, skipping insertion in model container [2021-12-06 23:30:34,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:30:34" (3/3) ... [2021-12-06 23:30:34,947 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec3_product31.cil.c [2021-12-06 23:30:34,950 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 23:30:34,951 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 23:30:34,991 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 23:30:34,997 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 [2021-12-06 23:30:34,997 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 23:30:35,020 INFO L276 IsEmpty]: Start isEmpty. Operand has 380 states, 290 states have (on average 1.4965517241379311) internal successors, (434), 296 states have internal predecessors, (434), 64 states have call successors, (64), 24 states have call predecessors, (64), 24 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) [2021-12-06 23:30:35,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-06 23:30:35,042 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:30:35,043 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:30:35,043 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:30:35,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:30:35,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1387818797, now seen corresponding path program 1 times [2021-12-06 23:30:35,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:30:35,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653853337] [2021-12-06 23:30:35,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:30:35,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:30:35,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:35,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:30:35,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:35,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:30:35,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:35,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:30:35,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:35,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 23:30:35,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:35,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 23:30:35,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:35,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 23:30:35,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:35,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 23:30:35,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:35,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-06 23:30:35,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:35,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 23:30:35,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:35,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 23:30:35,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:35,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 23:30:35,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:35,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-06 23:30:35,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:35,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 23:30:35,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:35,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 23:30:35,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:35,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 23:30:35,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:35,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 23:30:35,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:35,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 23:30:35,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:35,433 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-06 23:30:35,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:30:35,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653853337] [2021-12-06 23:30:35,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653853337] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:30:35,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805362211] [2021-12-06 23:30:35,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:30:35,434 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:30:35,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:30:35,436 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:30:35,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 23:30:35,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:35,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 1198 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-06 23:30:35,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:30:35,774 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-06 23:30:35,775 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:30:35,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805362211] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:30:35,775 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:30:35,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2021-12-06 23:30:35,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175010242] [2021-12-06 23:30:35,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:30:35,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 23:30:35,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:30:35,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 23:30:35,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 23:30:35,806 INFO L87 Difference]: Start difference. First operand has 380 states, 290 states have (on average 1.4965517241379311) internal successors, (434), 296 states have internal predecessors, (434), 64 states have call successors, (64), 24 states have call predecessors, (64), 24 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) Second operand has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-06 23:30:35,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:30:35,850 INFO L93 Difference]: Finished difference Result 605 states and 878 transitions. [2021-12-06 23:30:35,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 23:30:35,852 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 130 [2021-12-06 23:30:35,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:30:35,863 INFO L225 Difference]: With dead ends: 605 [2021-12-06 23:30:35,863 INFO L226 Difference]: Without dead ends: 372 [2021-12-06 23:30:35,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 23:30:35,870 INFO L933 BasicCegarLoop]: 556 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, 556 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 [2021-12-06 23:30:35,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:30:35,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2021-12-06 23:30:35,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 372. [2021-12-06 23:30:35,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 284 states have (on average 1.4894366197183098) internal successors, (423), 288 states have internal predecessors, (423), 64 states have call successors, (64), 24 states have call predecessors, (64), 23 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2021-12-06 23:30:35,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 548 transitions. [2021-12-06 23:30:35,924 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 548 transitions. Word has length 130 [2021-12-06 23:30:35,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:30:35,925 INFO L470 AbstractCegarLoop]: Abstraction has 372 states and 548 transitions. [2021-12-06 23:30:35,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-06 23:30:35,926 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 548 transitions. [2021-12-06 23:30:35,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-12-06 23:30:35,930 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:30:35,930 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:30:35,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 23:30:36,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-12-06 23:30:36,132 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:30:36,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:30:36,134 INFO L85 PathProgramCache]: Analyzing trace with hash 440913668, now seen corresponding path program 1 times [2021-12-06 23:30:36,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:30:36,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399908570] [2021-12-06 23:30:36,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:30:36,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:30:36,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:36,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:30:36,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:36,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:30:36,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:36,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:30:36,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:36,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 23:30:36,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:36,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 23:30:36,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:36,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 23:30:36,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:36,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-06 23:30:36,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:36,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 23:30:36,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:36,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 23:30:36,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:36,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 23:30:36,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:36,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 23:30:36,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:36,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 23:30:36,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:36,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 23:30:36,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:36,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 23:30:36,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:36,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 23:30:36,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:36,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 23:30:36,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:36,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 23:30:36,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:36,436 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-06 23:30:36,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:30:36,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399908570] [2021-12-06 23:30:36,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399908570] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:30:36,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494301921] [2021-12-06 23:30:36,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:30:36,437 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:30:36,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:30:36,438 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:30:36,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 23:30:36,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:36,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 1199 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 23:30:36,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:30:36,749 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-06 23:30:36,750 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:30:36,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494301921] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:30:36,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:30:36,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-06 23:30:36,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045388752] [2021-12-06 23:30:36,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:30:36,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:30:36,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:30:36,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:30:36,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 23:30:36,753 INFO L87 Difference]: Start difference. First operand 372 states and 548 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-06 23:30:36,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:30:36,798 INFO L93 Difference]: Finished difference Result 594 states and 855 transitions. [2021-12-06 23:30:36,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:30:36,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 131 [2021-12-06 23:30:36,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:30:36,803 INFO L225 Difference]: With dead ends: 594 [2021-12-06 23:30:36,803 INFO L226 Difference]: Without dead ends: 375 [2021-12-06 23:30:36,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 23:30:36,805 INFO L933 BasicCegarLoop]: 546 mSDtfsCounter, 1 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1090 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 [2021-12-06 23:30:36,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1090 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:30:36,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2021-12-06 23:30:36,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 374. [2021-12-06 23:30:36,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 286 states have (on average 1.486013986013986) internal successors, (425), 290 states have internal predecessors, (425), 64 states have call successors, (64), 24 states have call predecessors, (64), 23 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2021-12-06 23:30:36,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 550 transitions. [2021-12-06 23:30:36,830 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 550 transitions. Word has length 131 [2021-12-06 23:30:36,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:30:36,830 INFO L470 AbstractCegarLoop]: Abstraction has 374 states and 550 transitions. [2021-12-06 23:30:36,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-06 23:30:36,831 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 550 transitions. [2021-12-06 23:30:36,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-12-06 23:30:36,833 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:30:36,833 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:30:36,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-06 23:30:37,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:30:37,035 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:30:37,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:30:37,037 INFO L85 PathProgramCache]: Analyzing trace with hash 2067163547, now seen corresponding path program 1 times [2021-12-06 23:30:37,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:30:37,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025758553] [2021-12-06 23:30:37,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:30:37,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:30:37,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:37,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:30:37,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:37,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:30:37,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:37,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:30:37,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:37,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 23:30:37,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:37,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 23:30:37,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:37,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 23:30:37,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:37,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 23:30:37,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:37,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-06 23:30:37,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:37,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 23:30:37,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:37,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 23:30:37,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:37,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 23:30:37,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:37,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 23:30:37,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:37,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 23:30:37,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:37,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 23:30:37,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:37,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 23:30:37,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:37,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 23:30:37,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:37,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-06 23:30:37,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:37,280 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-06 23:30:37,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:30:37,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025758553] [2021-12-06 23:30:37,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025758553] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:30:37,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899447611] [2021-12-06 23:30:37,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:30:37,281 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:30:37,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:30:37,282 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:30:37,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 23:30:37,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:37,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 1213 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 23:30:37,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:30:37,590 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-06 23:30:37,590 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:30:37,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899447611] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:30:37,590 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:30:37,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-06 23:30:37,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805614379] [2021-12-06 23:30:37,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:30:37,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:30:37,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:30:37,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:30:37,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 23:30:37,592 INFO L87 Difference]: Start difference. First operand 374 states and 550 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-06 23:30:37,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:30:37,625 INFO L93 Difference]: Finished difference Result 778 states and 1159 transitions. [2021-12-06 23:30:37,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:30:37,625 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 137 [2021-12-06 23:30:37,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:30:37,630 INFO L225 Difference]: With dead ends: 778 [2021-12-06 23:30:37,630 INFO L226 Difference]: Without dead ends: 431 [2021-12-06 23:30:37,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 23:30:37,633 INFO L933 BasicCegarLoop]: 571 mSDtfsCounter, 107 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 1073 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 [2021-12-06 23:30:37,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 1073 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:30:37,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-12-06 23:30:37,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 423. [2021-12-06 23:30:37,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 324 states have (on average 1.5030864197530864) internal successors, (487), 328 states have internal predecessors, (487), 75 states have call successors, (75), 24 states have call predecessors, (75), 23 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2021-12-06 23:30:37,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 634 transitions. [2021-12-06 23:30:37,661 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 634 transitions. Word has length 137 [2021-12-06 23:30:37,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:30:37,662 INFO L470 AbstractCegarLoop]: Abstraction has 423 states and 634 transitions. [2021-12-06 23:30:37,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-06 23:30:37,662 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 634 transitions. [2021-12-06 23:30:37,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-12-06 23:30:37,665 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:30:37,665 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:30:37,689 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 23:30:37,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:30:37,867 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:30:37,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:30:37,869 INFO L85 PathProgramCache]: Analyzing trace with hash -607209044, now seen corresponding path program 1 times [2021-12-06 23:30:37,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:30:37,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413263459] [2021-12-06 23:30:37,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:30:37,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:30:37,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:38,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:30:38,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:38,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:30:38,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:38,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:30:38,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:38,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 23:30:38,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:38,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 23:30:38,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:38,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 23:30:38,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:38,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 23:30:38,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:38,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 23:30:38,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:38,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 23:30:38,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:38,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 23:30:38,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:38,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 23:30:38,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:38,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 23:30:38,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:38,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 23:30:38,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:38,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 23:30:38,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:38,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 23:30:38,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:38,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 23:30:38,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:38,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 23:30:38,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:38,102 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-06 23:30:38,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:30:38,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413263459] [2021-12-06 23:30:38,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413263459] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:30:38,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440777959] [2021-12-06 23:30:38,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:30:38,103 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:30:38,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:30:38,104 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:30:38,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 23:30:38,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:38,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 1220 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 23:30:38,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:30:38,450 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-06 23:30:38,450 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:30:38,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440777959] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:30:38,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:30:38,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-12-06 23:30:38,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793166298] [2021-12-06 23:30:38,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:30:38,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:30:38,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:30:38,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:30:38,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-06 23:30:38,452 INFO L87 Difference]: Start difference. First operand 423 states and 634 transitions. Second operand has 5 states, 4 states have (on average 21.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-06 23:30:38,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:30:38,509 INFO L93 Difference]: Finished difference Result 837 states and 1258 transitions. [2021-12-06 23:30:38,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:30:38,510 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 138 [2021-12-06 23:30:38,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:30:38,513 INFO L225 Difference]: With dead ends: 837 [2021-12-06 23:30:38,514 INFO L226 Difference]: Without dead ends: 425 [2021-12-06 23:30:38,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-06 23:30:38,517 INFO L933 BasicCegarLoop]: 539 mSDtfsCounter, 125 mSDsluCounter, 1473 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 2012 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 [2021-12-06 23:30:38,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 2012 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:30:38,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2021-12-06 23:30:38,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 425. [2021-12-06 23:30:38,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 325 states have (on average 1.5015384615384615) internal successors, (488), 330 states have internal predecessors, (488), 75 states have call successors, (75), 24 states have call predecessors, (75), 24 states have return successors, (74), 72 states have call predecessors, (74), 72 states have call successors, (74) [2021-12-06 23:30:38,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 637 transitions. [2021-12-06 23:30:38,542 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 637 transitions. Word has length 138 [2021-12-06 23:30:38,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:30:38,543 INFO L470 AbstractCegarLoop]: Abstraction has 425 states and 637 transitions. [2021-12-06 23:30:38,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-06 23:30:38,543 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 637 transitions. [2021-12-06 23:30:38,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-12-06 23:30:38,546 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:30:38,546 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:30:38,568 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 23:30:38,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-12-06 23:30:38,748 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:30:38,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:30:38,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1078053634, now seen corresponding path program 1 times [2021-12-06 23:30:38,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:30:38,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714929145] [2021-12-06 23:30:38,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:30:38,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:30:38,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:38,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:30:38,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:38,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:30:38,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:38,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:30:38,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:38,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 23:30:38,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:38,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 23:30:38,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:38,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 23:30:38,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:38,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-06 23:30:38,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:38,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 23:30:38,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:38,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 23:30:38,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:38,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 23:30:38,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:38,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 23:30:38,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:38,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 23:30:38,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:38,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 23:30:38,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:38,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-06 23:30:38,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:38,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 23:30:38,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:38,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-06 23:30:38,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:38,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-06 23:30:38,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:38,984 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-06 23:30:38,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:30:38,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714929145] [2021-12-06 23:30:38,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714929145] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:30:38,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802599345] [2021-12-06 23:30:38,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:30:38,984 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:30:38,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:30:38,985 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:30:38,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 23:30:39,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:39,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 1221 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 23:30:39,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:30:39,323 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-06 23:30:39,323 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:30:39,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802599345] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:30:39,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:30:39,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-06 23:30:39,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525152558] [2021-12-06 23:30:39,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:30:39,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:30:39,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:30:39,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:30:39,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-06 23:30:39,324 INFO L87 Difference]: Start difference. First operand 425 states and 637 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-06 23:30:39,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:30:39,376 INFO L93 Difference]: Finished difference Result 839 states and 1263 transitions. [2021-12-06 23:30:39,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:30:39,376 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 139 [2021-12-06 23:30:39,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:30:39,379 INFO L225 Difference]: With dead ends: 839 [2021-12-06 23:30:39,379 INFO L226 Difference]: Without dead ends: 427 [2021-12-06 23:30:39,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-12-06 23:30:39,381 INFO L933 BasicCegarLoop]: 537 mSDtfsCounter, 124 mSDsluCounter, 1464 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 2001 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 [2021-12-06 23:30:39,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 2001 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:30:39,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2021-12-06 23:30:39,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2021-12-06 23:30:39,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 326 states have (on average 1.5) internal successors, (489), 332 states have internal predecessors, (489), 75 states have call successors, (75), 24 states have call predecessors, (75), 25 states have return successors, (79), 72 states have call predecessors, (79), 72 states have call successors, (79) [2021-12-06 23:30:39,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 643 transitions. [2021-12-06 23:30:39,398 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 643 transitions. Word has length 139 [2021-12-06 23:30:39,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:30:39,399 INFO L470 AbstractCegarLoop]: Abstraction has 427 states and 643 transitions. [2021-12-06 23:30:39,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-06 23:30:39,399 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 643 transitions. [2021-12-06 23:30:39,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-06 23:30:39,401 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:30:39,401 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:30:39,435 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 23:30:39,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:30:39,602 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:30:39,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:30:39,604 INFO L85 PathProgramCache]: Analyzing trace with hash -2074934836, now seen corresponding path program 1 times [2021-12-06 23:30:39,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:30:39,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959027388] [2021-12-06 23:30:39,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:30:39,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:30:39,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:39,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:30:39,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:39,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:30:39,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:39,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:30:39,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:39,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 23:30:39,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:39,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:30:39,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:39,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 23:30:39,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:39,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 23:30:39,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:39,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 23:30:39,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:39,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 23:30:39,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:39,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 23:30:39,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:39,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 23:30:39,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:39,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 23:30:39,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:39,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 23:30:39,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:39,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 23:30:39,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:39,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 23:30:39,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:39,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-06 23:30:39,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:39,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-06 23:30:39,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:39,827 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-06 23:30:39,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:30:39,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959027388] [2021-12-06 23:30:39,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959027388] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:30:39,827 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:30:39,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 23:30:39,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465092353] [2021-12-06 23:30:39,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:30:39,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 23:30:39,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:30:39,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 23:30:39,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 23:30:39,828 INFO L87 Difference]: Start difference. First operand 427 states and 643 transitions. Second operand has 9 states, 8 states have (on average 10.25) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-06 23:30:41,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:30:41,205 INFO L93 Difference]: Finished difference Result 1024 states and 1542 transitions. [2021-12-06 23:30:41,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 23:30:41,205 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.25) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 140 [2021-12-06 23:30:41,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:30:41,209 INFO L225 Difference]: With dead ends: 1024 [2021-12-06 23:30:41,209 INFO L226 Difference]: Without dead ends: 620 [2021-12-06 23:30:41,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 23:30:41,212 INFO L933 BasicCegarLoop]: 658 mSDtfsCounter, 1362 mSDsluCounter, 1125 mSDsCounter, 0 mSdLazyCounter, 2041 mSolverCounterSat, 582 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1380 SdHoareTripleChecker+Valid, 1783 SdHoareTripleChecker+Invalid, 2623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 582 IncrementalHoareTripleChecker+Valid, 2041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:30:41,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1380 Valid, 1783 Invalid, 2623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [582 Valid, 2041 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-06 23:30:41,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2021-12-06 23:30:41,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 427. [2021-12-06 23:30:41,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 326 states have (on average 1.5) internal successors, (489), 332 states have internal predecessors, (489), 75 states have call successors, (75), 24 states have call predecessors, (75), 25 states have return successors, (78), 72 states have call predecessors, (78), 72 states have call successors, (78) [2021-12-06 23:30:41,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 642 transitions. [2021-12-06 23:30:41,240 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 642 transitions. Word has length 140 [2021-12-06 23:30:41,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:30:41,240 INFO L470 AbstractCegarLoop]: Abstraction has 427 states and 642 transitions. [2021-12-06 23:30:41,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.25) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-06 23:30:41,240 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 642 transitions. [2021-12-06 23:30:41,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-06 23:30:41,242 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:30:41,242 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:30:41,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 23:30:41,243 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:30:41,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:30:41,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1534046852, now seen corresponding path program 2 times [2021-12-06 23:30:41,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:30:41,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687449539] [2021-12-06 23:30:41,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:30:41,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:30:41,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:41,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:30:41,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:41,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:30:41,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:41,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:30:41,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:41,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 23:30:41,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:41,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:30:41,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:41,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 23:30:41,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:41,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 23:30:41,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:41,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-06 23:30:41,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:41,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 23:30:41,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:41,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 23:30:41,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:41,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-06 23:30:41,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:41,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-06 23:30:41,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:41,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 23:30:41,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:41,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-06 23:30:41,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:41,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-06 23:30:41,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:41,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-06 23:30:41,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:41,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 23:30:41,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:41,341 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-06 23:30:41,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:30:41,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687449539] [2021-12-06 23:30:41,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687449539] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:30:41,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:30:41,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 23:30:41,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116468040] [2021-12-06 23:30:41,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:30:41,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 23:30:41,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:30:41,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 23:30:41,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 23:30:41,343 INFO L87 Difference]: Start difference. First operand 427 states and 642 transitions. Second operand has 9 states, 8 states have (on average 10.375) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-06 23:30:42,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:30:42,560 INFO L93 Difference]: Finished difference Result 1026 states and 1545 transitions. [2021-12-06 23:30:42,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 23:30:42,560 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.375) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 141 [2021-12-06 23:30:42,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:30:42,565 INFO L225 Difference]: With dead ends: 1026 [2021-12-06 23:30:42,566 INFO L226 Difference]: Without dead ends: 622 [2021-12-06 23:30:42,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 23:30:42,569 INFO L933 BasicCegarLoop]: 679 mSDtfsCounter, 1325 mSDsluCounter, 1126 mSDsCounter, 0 mSdLazyCounter, 2131 mSolverCounterSat, 573 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1342 SdHoareTripleChecker+Valid, 1805 SdHoareTripleChecker+Invalid, 2704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 573 IncrementalHoareTripleChecker+Valid, 2131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:30:42,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1342 Valid, 1805 Invalid, 2704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [573 Valid, 2131 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-06 23:30:42,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2021-12-06 23:30:42,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 429. [2021-12-06 23:30:42,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 327 states have (on average 1.4984709480122325) internal successors, (490), 334 states have internal predecessors, (490), 75 states have call successors, (75), 24 states have call predecessors, (75), 26 states have return successors, (80), 72 states have call predecessors, (80), 72 states have call successors, (80) [2021-12-06 23:30:42,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 645 transitions. [2021-12-06 23:30:42,605 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 645 transitions. Word has length 141 [2021-12-06 23:30:42,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:30:42,605 INFO L470 AbstractCegarLoop]: Abstraction has 429 states and 645 transitions. [2021-12-06 23:30:42,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.375) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-06 23:30:42,605 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 645 transitions. [2021-12-06 23:30:42,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-06 23:30:42,607 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:30:42,608 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:30:42,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 23:30:42,608 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:30:42,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:30:42,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1962358169, now seen corresponding path program 1 times [2021-12-06 23:30:42,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:30:42,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057584295] [2021-12-06 23:30:42,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:30:42,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:30:42,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:42,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:30:42,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:42,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:30:42,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:42,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:30:42,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:42,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 23:30:42,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:42,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:30:42,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:42,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 23:30:42,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:42,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-06 23:30:42,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:42,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 23:30:42,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:42,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 23:30:42,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:42,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 23:30:42,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:42,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 23:30:42,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:42,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 23:30:42,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:42,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 23:30:42,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:42,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-06 23:30:42,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:42,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-06 23:30:42,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:42,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-06 23:30:42,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:42,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 23:30:42,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:42,741 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-06 23:30:42,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:30:42,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057584295] [2021-12-06 23:30:42,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057584295] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:30:42,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:30:42,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 23:30:42,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618916023] [2021-12-06 23:30:42,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:30:42,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 23:30:42,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:30:42,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 23:30:42,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-06 23:30:42,743 INFO L87 Difference]: Start difference. First operand 429 states and 645 transitions. Second operand has 12 states, 11 states have (on average 7.909090909090909) internal successors, (87), 8 states have internal predecessors, (87), 4 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-06 23:30:44,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:30:44,139 INFO L93 Difference]: Finished difference Result 1024 states and 1540 transitions. [2021-12-06 23:30:44,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 23:30:44,140 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.909090909090909) internal successors, (87), 8 states have internal predecessors, (87), 4 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 142 [2021-12-06 23:30:44,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:30:44,143 INFO L225 Difference]: With dead ends: 1024 [2021-12-06 23:30:44,143 INFO L226 Difference]: Without dead ends: 622 [2021-12-06 23:30:44,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-06 23:30:44,145 INFO L933 BasicCegarLoop]: 639 mSDtfsCounter, 1473 mSDsluCounter, 1687 mSDsCounter, 0 mSdLazyCounter, 3653 mSolverCounterSat, 634 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 2326 SdHoareTripleChecker+Invalid, 4287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 634 IncrementalHoareTripleChecker+Valid, 3653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:30:44,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1473 Valid, 2326 Invalid, 4287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [634 Valid, 3653 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-06 23:30:44,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2021-12-06 23:30:44,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 429. [2021-12-06 23:30:44,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 327 states have (on average 1.4984709480122325) internal successors, (490), 334 states have internal predecessors, (490), 75 states have call successors, (75), 24 states have call predecessors, (75), 26 states have return successors, (79), 72 states have call predecessors, (79), 72 states have call successors, (79) [2021-12-06 23:30:44,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 644 transitions. [2021-12-06 23:30:44,168 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 644 transitions. Word has length 142 [2021-12-06 23:30:44,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:30:44,168 INFO L470 AbstractCegarLoop]: Abstraction has 429 states and 644 transitions. [2021-12-06 23:30:44,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.909090909090909) internal successors, (87), 8 states have internal predecessors, (87), 4 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-06 23:30:44,168 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 644 transitions. [2021-12-06 23:30:44,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-06 23:30:44,170 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:30:44,170 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:30:44,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 23:30:44,171 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:30:44,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:30:44,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1250543763, now seen corresponding path program 2 times [2021-12-06 23:30:44,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:30:44,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471769281] [2021-12-06 23:30:44,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:30:44,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:30:44,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:44,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:30:44,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:44,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:30:44,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:44,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:30:44,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:44,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 23:30:44,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:44,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:30:44,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:44,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 23:30:44,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:44,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 23:30:44,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:44,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-06 23:30:44,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:44,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 23:30:44,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:44,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 23:30:44,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:44,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 23:30:44,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:44,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 23:30:44,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:44,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 23:30:44,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:44,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 23:30:44,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:44,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-06 23:30:44,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:44,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-06 23:30:44,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:44,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-06 23:30:44,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:44,292 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-06 23:30:44,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:30:44,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471769281] [2021-12-06 23:30:44,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471769281] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:30:44,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:30:44,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 23:30:44,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64649859] [2021-12-06 23:30:44,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:30:44,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 23:30:44,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:30:44,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 23:30:44,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-06 23:30:44,294 INFO L87 Difference]: Start difference. First operand 429 states and 644 transitions. Second operand has 12 states, 11 states have (on average 8.0) internal successors, (88), 8 states have internal predecessors, (88), 4 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-06 23:30:45,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:30:45,727 INFO L93 Difference]: Finished difference Result 1026 states and 1546 transitions. [2021-12-06 23:30:45,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 23:30:45,728 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.0) internal successors, (88), 8 states have internal predecessors, (88), 4 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 143 [2021-12-06 23:30:45,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:30:45,733 INFO L225 Difference]: With dead ends: 1026 [2021-12-06 23:30:45,733 INFO L226 Difference]: Without dead ends: 624 [2021-12-06 23:30:45,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-06 23:30:45,735 INFO L933 BasicCegarLoop]: 654 mSDtfsCounter, 1440 mSDsluCounter, 1693 mSDsCounter, 0 mSdLazyCounter, 3779 mSolverCounterSat, 617 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1440 SdHoareTripleChecker+Valid, 2347 SdHoareTripleChecker+Invalid, 4396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 617 IncrementalHoareTripleChecker+Valid, 3779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:30:45,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1440 Valid, 2347 Invalid, 4396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [617 Valid, 3779 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-06 23:30:45,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2021-12-06 23:30:45,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 431. [2021-12-06 23:30:45,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 328 states have (on average 1.4969512195121952) internal successors, (491), 336 states have internal predecessors, (491), 75 states have call successors, (75), 24 states have call predecessors, (75), 27 states have return successors, (84), 72 states have call predecessors, (84), 72 states have call successors, (84) [2021-12-06 23:30:45,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 650 transitions. [2021-12-06 23:30:45,772 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 650 transitions. Word has length 143 [2021-12-06 23:30:45,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:30:45,772 INFO L470 AbstractCegarLoop]: Abstraction has 431 states and 650 transitions. [2021-12-06 23:30:45,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.0) internal successors, (88), 8 states have internal predecessors, (88), 4 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-06 23:30:45,773 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 650 transitions. [2021-12-06 23:30:45,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-06 23:30:45,775 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:30:45,775 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:30:45,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 23:30:45,775 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:30:45,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:30:45,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1937124610, now seen corresponding path program 1 times [2021-12-06 23:30:45,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:30:45,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836700329] [2021-12-06 23:30:45,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:30:45,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:30:45,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:45,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:30:45,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:45,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:30:45,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:45,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:30:45,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:45,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 23:30:45,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:45,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:30:45,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:45,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 23:30:45,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:45,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 23:30:45,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:45,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 23:30:45,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:45,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 23:30:45,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:45,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 23:30:45,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:45,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 23:30:45,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:45,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 23:30:45,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:45,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 23:30:45,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:45,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 23:30:45,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:45,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 23:30:45,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:45,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 23:30:45,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:45,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-06 23:30:45,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:45,870 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-06 23:30:45,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:30:45,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836700329] [2021-12-06 23:30:45,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836700329] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:30:45,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249000244] [2021-12-06 23:30:45,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:30:45,871 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:30:45,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:30:45,871 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:30:45,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 23:30:46,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:46,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 1226 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 23:30:46,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:30:46,151 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-06 23:30:46,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:30:46,267 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-06 23:30:46,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249000244] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:30:46,268 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:30:46,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2021-12-06 23:30:46,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275839438] [2021-12-06 23:30:46,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:30:46,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 23:30:46,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:30:46,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 23:30:46,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-12-06 23:30:46,269 INFO L87 Difference]: Start difference. First operand 431 states and 650 transitions. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 7 states have internal predecessors, (124), 2 states have call successors, (40), 6 states have call predecessors, (40), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-06 23:30:47,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:30:47,411 INFO L93 Difference]: Finished difference Result 1195 states and 1874 transitions. [2021-12-06 23:30:47,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 23:30:47,412 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 7 states have internal predecessors, (124), 2 states have call successors, (40), 6 states have call predecessors, (40), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 144 [2021-12-06 23:30:47,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:30:47,417 INFO L225 Difference]: With dead ends: 1195 [2021-12-06 23:30:47,417 INFO L226 Difference]: Without dead ends: 976 [2021-12-06 23:30:47,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2021-12-06 23:30:47,419 INFO L933 BasicCegarLoop]: 770 mSDtfsCounter, 1659 mSDsluCounter, 1511 mSDsCounter, 0 mSdLazyCounter, 1860 mSolverCounterSat, 720 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1704 SdHoareTripleChecker+Valid, 2281 SdHoareTripleChecker+Invalid, 2580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 720 IncrementalHoareTripleChecker+Valid, 1860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:30:47,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1704 Valid, 2281 Invalid, 2580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [720 Valid, 1860 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 23:30:47,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2021-12-06 23:30:47,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 759. [2021-12-06 23:30:47,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 592 states have (on average 1.5692567567567568) internal successors, (929), 600 states have internal predecessors, (929), 139 states have call successors, (139), 24 states have call predecessors, (139), 27 states have return successors, (158), 136 states have call predecessors, (158), 136 states have call successors, (158) [2021-12-06 23:30:47,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1226 transitions. [2021-12-06 23:30:47,459 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1226 transitions. Word has length 144 [2021-12-06 23:30:47,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:30:47,460 INFO L470 AbstractCegarLoop]: Abstraction has 759 states and 1226 transitions. [2021-12-06 23:30:47,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 7 states have internal predecessors, (124), 2 states have call successors, (40), 6 states have call predecessors, (40), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-06 23:30:47,460 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1226 transitions. [2021-12-06 23:30:47,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-12-06 23:30:47,463 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:30:47,463 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:30:47,497 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 23:30:47,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-06 23:30:47,664 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:30:47,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:30:47,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1055063227, now seen corresponding path program 1 times [2021-12-06 23:30:47,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:30:47,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373697239] [2021-12-06 23:30:47,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:30:47,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:30:47,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:47,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:30:47,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:47,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:30:47,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:47,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:30:47,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:47,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 23:30:47,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:47,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:30:47,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:47,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 23:30:47,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:47,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 23:30:47,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:47,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 23:30:47,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:47,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 23:30:47,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:47,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 23:30:47,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:47,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 23:30:47,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:47,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 23:30:47,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:47,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 23:30:47,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:47,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 23:30:47,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:47,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-06 23:30:47,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:47,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-06 23:30:47,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:47,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-06 23:30:47,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:47,760 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-06 23:30:47,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:30:47,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373697239] [2021-12-06 23:30:47,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373697239] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:30:47,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:30:47,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 23:30:47,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646670043] [2021-12-06 23:30:47,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:30:47,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:30:47,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:30:47,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:30:47,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:30:47,762 INFO L87 Difference]: Start difference. First operand 759 states and 1226 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-06 23:30:48,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:30:48,670 INFO L93 Difference]: Finished difference Result 1976 states and 3245 transitions. [2021-12-06 23:30:48,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 23:30:48,670 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 150 [2021-12-06 23:30:48,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:30:48,677 INFO L225 Difference]: With dead ends: 1976 [2021-12-06 23:30:48,677 INFO L226 Difference]: Without dead ends: 1285 [2021-12-06 23:30:48,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 23:30:48,679 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 1335 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 617 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1351 SdHoareTripleChecker+Valid, 1480 SdHoareTripleChecker+Invalid, 1712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 617 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 23:30:48,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1351 Valid, 1480 Invalid, 1712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [617 Valid, 1095 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 23:30:48,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1285 states. [2021-12-06 23:30:48,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1285 to 1084. [2021-12-06 23:30:48,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1084 states, 853 states have (on average 1.5873388042203986) internal successors, (1354), 861 states have internal predecessors, (1354), 203 states have call successors, (203), 24 states have call predecessors, (203), 27 states have return successors, (232), 200 states have call predecessors, (232), 200 states have call successors, (232) [2021-12-06 23:30:48,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1084 states to 1084 states and 1789 transitions. [2021-12-06 23:30:48,731 INFO L78 Accepts]: Start accepts. Automaton has 1084 states and 1789 transitions. Word has length 150 [2021-12-06 23:30:48,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:30:48,732 INFO L470 AbstractCegarLoop]: Abstraction has 1084 states and 1789 transitions. [2021-12-06 23:30:48,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-06 23:30:48,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1084 states and 1789 transitions. [2021-12-06 23:30:48,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-06 23:30:48,737 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:30:48,737 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:30:48,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 23:30:48,737 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:30:48,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:30:48,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1879593157, now seen corresponding path program 1 times [2021-12-06 23:30:48,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:30:48,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710434062] [2021-12-06 23:30:48,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:30:48,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:30:48,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:48,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:30:48,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:48,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:30:48,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:48,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:30:48,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:48,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 23:30:48,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:48,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:30:48,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:48,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 23:30:48,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:48,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 23:30:48,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:48,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 23:30:48,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:48,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 23:30:48,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:48,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 23:30:48,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:48,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 23:30:48,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:48,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 23:30:48,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:48,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 23:30:48,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:48,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 23:30:48,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:48,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-06 23:30:48,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:48,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-06 23:30:48,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:48,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-06 23:30:48,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:48,830 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-06 23:30:48,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:30:48,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710434062] [2021-12-06 23:30:48,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710434062] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:30:48,830 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:30:48,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 23:30:48,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746151636] [2021-12-06 23:30:48,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:30:48,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:30:48,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:30:48,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:30:48,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:30:48,832 INFO L87 Difference]: Start difference. First operand 1084 states and 1789 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-06 23:30:49,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:30:49,712 INFO L93 Difference]: Finished difference Result 2756 states and 4594 transitions. [2021-12-06 23:30:49,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 23:30:49,713 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 151 [2021-12-06 23:30:49,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:30:49,722 INFO L225 Difference]: With dead ends: 2756 [2021-12-06 23:30:49,722 INFO L226 Difference]: Without dead ends: 1793 [2021-12-06 23:30:49,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 23:30:49,725 INFO L933 BasicCegarLoop]: 704 mSDtfsCounter, 1333 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 1086 mSolverCounterSat, 617 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1348 SdHoareTripleChecker+Valid, 1471 SdHoareTripleChecker+Invalid, 1703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 617 IncrementalHoareTripleChecker+Valid, 1086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 23:30:49,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1348 Valid, 1471 Invalid, 1703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [617 Valid, 1086 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 23:30:49,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1793 states. [2021-12-06 23:30:49,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1793 to 1592. [2021-12-06 23:30:49,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1592 states, 1266 states have (on average 1.599526066350711) internal successors, (2025), 1274 states have internal predecessors, (2025), 298 states have call successors, (298), 24 states have call predecessors, (298), 27 states have return successors, (327), 295 states have call predecessors, (327), 295 states have call successors, (327) [2021-12-06 23:30:49,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1592 states to 1592 states and 2650 transitions. [2021-12-06 23:30:49,799 INFO L78 Accepts]: Start accepts. Automaton has 1592 states and 2650 transitions. Word has length 151 [2021-12-06 23:30:49,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:30:49,800 INFO L470 AbstractCegarLoop]: Abstraction has 1592 states and 2650 transitions. [2021-12-06 23:30:49,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-06 23:30:49,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1592 states and 2650 transitions. [2021-12-06 23:30:49,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-12-06 23:30:49,806 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:30:49,807 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:30:49,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 23:30:49,807 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:30:49,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:30:49,807 INFO L85 PathProgramCache]: Analyzing trace with hash -956692061, now seen corresponding path program 1 times [2021-12-06 23:30:49,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:30:49,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853597187] [2021-12-06 23:30:49,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:30:49,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:30:49,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:49,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:30:49,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:49,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:30:49,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:49,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:30:49,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:49,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 23:30:49,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:49,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:30:49,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:49,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 23:30:49,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:49,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 23:30:49,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:49,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 23:30:49,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:49,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 23:30:49,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:49,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 23:30:49,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:49,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-06 23:30:49,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:49,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-06 23:30:49,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:49,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 23:30:49,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:49,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 23:30:49,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:49,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-06 23:30:49,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:49,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-06 23:30:49,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:49,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 23:30:49,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:49,905 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-06 23:30:49,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:30:49,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853597187] [2021-12-06 23:30:49,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853597187] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:30:49,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:30:49,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 23:30:49,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260491986] [2021-12-06 23:30:49,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:30:49,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:30:49,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:30:49,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:30:49,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:30:49,906 INFO L87 Difference]: Start difference. First operand 1592 states and 2650 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-06 23:30:50,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:30:50,831 INFO L93 Difference]: Finished difference Result 3908 states and 6603 transitions. [2021-12-06 23:30:50,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 23:30:50,832 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 152 [2021-12-06 23:30:50,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:30:50,844 INFO L225 Difference]: With dead ends: 3908 [2021-12-06 23:30:50,845 INFO L226 Difference]: Without dead ends: 2562 [2021-12-06 23:30:50,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 23:30:50,848 INFO L933 BasicCegarLoop]: 695 mSDtfsCounter, 1328 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 1086 mSolverCounterSat, 609 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1344 SdHoareTripleChecker+Valid, 1454 SdHoareTripleChecker+Invalid, 1695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 609 IncrementalHoareTripleChecker+Valid, 1086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 23:30:50,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1344 Valid, 1454 Invalid, 1695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [609 Valid, 1086 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 23:30:50,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2562 states. [2021-12-06 23:30:50,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2562 to 2361. [2021-12-06 23:30:50,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2361 states, 1912 states have (on average 1.608786610878661) internal successors, (3076), 1920 states have internal predecessors, (3076), 421 states have call successors, (421), 24 states have call predecessors, (421), 27 states have return successors, (466), 418 states have call predecessors, (466), 418 states have call successors, (466) [2021-12-06 23:30:50,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2361 states to 2361 states and 3963 transitions. [2021-12-06 23:30:50,951 INFO L78 Accepts]: Start accepts. Automaton has 2361 states and 3963 transitions. Word has length 152 [2021-12-06 23:30:50,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:30:50,951 INFO L470 AbstractCegarLoop]: Abstraction has 2361 states and 3963 transitions. [2021-12-06 23:30:50,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-06 23:30:50,951 INFO L276 IsEmpty]: Start isEmpty. Operand 2361 states and 3963 transitions. [2021-12-06 23:30:50,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-12-06 23:30:50,960 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:30:50,960 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:30:50,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 23:30:50,960 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:30:50,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:30:50,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1635898876, now seen corresponding path program 1 times [2021-12-06 23:30:50,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:30:50,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046926960] [2021-12-06 23:30:50,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:30:50,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:30:50,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:50,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:30:50,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:51,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:30:51,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:51,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:30:51,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:51,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 23:30:51,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:51,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:30:51,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:51,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 23:30:51,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:51,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 23:30:51,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:51,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 23:30:51,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:51,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 23:30:51,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:51,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 23:30:51,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:51,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 23:30:51,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:51,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 23:30:51,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:51,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 23:30:51,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:51,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 23:30:51,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:51,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 23:30:51,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:51,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-06 23:30:51,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:51,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 23:30:51,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:51,045 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-06 23:30:51,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:30:51,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046926960] [2021-12-06 23:30:51,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046926960] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:30:51,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:30:51,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 23:30:51,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39545498] [2021-12-06 23:30:51,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:30:51,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:30:51,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:30:51,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:30:51,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:30:51,046 INFO L87 Difference]: Start difference. First operand 2361 states and 3963 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-06 23:30:52,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:30:52,038 INFO L93 Difference]: Finished difference Result 5702 states and 9737 transitions. [2021-12-06 23:30:52,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 23:30:52,038 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 153 [2021-12-06 23:30:52,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:30:52,057 INFO L225 Difference]: With dead ends: 5702 [2021-12-06 23:30:52,057 INFO L226 Difference]: Without dead ends: 3791 [2021-12-06 23:30:52,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 23:30:52,062 INFO L933 BasicCegarLoop]: 697 mSDtfsCounter, 1324 mSDsluCounter, 756 mSDsCounter, 0 mSdLazyCounter, 1073 mSolverCounterSat, 618 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1339 SdHoareTripleChecker+Valid, 1453 SdHoareTripleChecker+Invalid, 1691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 618 IncrementalHoareTripleChecker+Valid, 1073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 23:30:52,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1339 Valid, 1453 Invalid, 1691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [618 Valid, 1073 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 23:30:52,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3791 states. [2021-12-06 23:30:52,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3791 to 3590. [2021-12-06 23:30:52,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3590 states, 2962 states have (on average 1.614787305874409) internal successors, (4783), 2970 states have internal predecessors, (4783), 600 states have call successors, (600), 24 states have call predecessors, (600), 27 states have return successors, (671), 597 states have call predecessors, (671), 597 states have call successors, (671) [2021-12-06 23:30:52,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3590 states to 3590 states and 6054 transitions. [2021-12-06 23:30:52,217 INFO L78 Accepts]: Start accepts. Automaton has 3590 states and 6054 transitions. Word has length 153 [2021-12-06 23:30:52,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:30:52,218 INFO L470 AbstractCegarLoop]: Abstraction has 3590 states and 6054 transitions. [2021-12-06 23:30:52,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-06 23:30:52,218 INFO L276 IsEmpty]: Start isEmpty. Operand 3590 states and 6054 transitions. [2021-12-06 23:30:52,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-12-06 23:30:52,229 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:30:52,229 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:30:52,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 23:30:52,229 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:30:52,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:30:52,230 INFO L85 PathProgramCache]: Analyzing trace with hash -392893145, now seen corresponding path program 1 times [2021-12-06 23:30:52,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:30:52,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555481489] [2021-12-06 23:30:52,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:30:52,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:30:52,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:52,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:30:52,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:52,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:30:52,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:52,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:30:52,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:52,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 23:30:52,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:52,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:30:52,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:52,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 23:30:52,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:52,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 23:30:52,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:52,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 23:30:52,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:52,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 23:30:52,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:52,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 23:30:52,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:52,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 23:30:52,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:52,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-06 23:30:52,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:52,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-06 23:30:52,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:52,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-06 23:30:52,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:52,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-06 23:30:52,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:52,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-06 23:30:52,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:52,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-06 23:30:52,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:52,316 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-06 23:30:52,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:30:52,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555481489] [2021-12-06 23:30:52,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555481489] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:30:52,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:30:52,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 23:30:52,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37122080] [2021-12-06 23:30:52,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:30:52,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:30:52,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:30:52,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:30:52,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:30:52,318 INFO L87 Difference]: Start difference. First operand 3590 states and 6054 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-06 23:30:53,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:30:53,363 INFO L93 Difference]: Finished difference Result 8650 states and 14884 transitions. [2021-12-06 23:30:53,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 23:30:53,363 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 154 [2021-12-06 23:30:53,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:30:53,392 INFO L225 Difference]: With dead ends: 8650 [2021-12-06 23:30:53,392 INFO L226 Difference]: Without dead ends: 5822 [2021-12-06 23:30:53,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 23:30:53,398 INFO L933 BasicCegarLoop]: 703 mSDtfsCounter, 1344 mSDsluCounter, 798 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 613 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1360 SdHoareTripleChecker+Valid, 1501 SdHoareTripleChecker+Invalid, 1685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 613 IncrementalHoareTripleChecker+Valid, 1072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 23:30:53,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1360 Valid, 1501 Invalid, 1685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [613 Valid, 1072 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 23:30:53,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5822 states. [2021-12-06 23:30:53,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5822 to 5621. [2021-12-06 23:30:53,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5621 states, 4617 states have (on average 1.6103530431015811) internal successors, (7435), 4625 states have internal predecessors, (7435), 976 states have call successors, (976), 24 states have call predecessors, (976), 27 states have return successors, (1091), 973 states have call predecessors, (1091), 973 states have call successors, (1091) [2021-12-06 23:30:53,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5621 states to 5621 states and 9502 transitions. [2021-12-06 23:30:53,637 INFO L78 Accepts]: Start accepts. Automaton has 5621 states and 9502 transitions. Word has length 154 [2021-12-06 23:30:53,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:30:53,638 INFO L470 AbstractCegarLoop]: Abstraction has 5621 states and 9502 transitions. [2021-12-06 23:30:53,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-06 23:30:53,638 INFO L276 IsEmpty]: Start isEmpty. Operand 5621 states and 9502 transitions. [2021-12-06 23:30:53,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-12-06 23:30:53,654 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:30:53,654 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:30:53,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 23:30:53,654 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:30:53,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:30:53,654 INFO L85 PathProgramCache]: Analyzing trace with hash -2011874688, now seen corresponding path program 1 times [2021-12-06 23:30:53,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:30:53,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781853513] [2021-12-06 23:30:53,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:30:53,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:30:53,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:53,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:30:53,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:53,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:30:53,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:53,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:30:53,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:53,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 23:30:53,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:53,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:30:53,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:53,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 23:30:53,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:53,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 23:30:53,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:53,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 23:30:53,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:53,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-06 23:30:53,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:53,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 23:30:53,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:53,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 23:30:53,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:53,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-06 23:30:53,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:53,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-06 23:30:53,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:53,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-06 23:30:53,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:53,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-06 23:30:53,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:53,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-06 23:30:53,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:53,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-06 23:30:53,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:53,738 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-06 23:30:53,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:30:53,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781853513] [2021-12-06 23:30:53,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781853513] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:30:53,738 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:30:53,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 23:30:53,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424844727] [2021-12-06 23:30:53,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:30:53,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:30:53,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:30:53,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:30:53,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:30:53,740 INFO L87 Difference]: Start difference. First operand 5621 states and 9502 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-06 23:30:54,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:30:54,859 INFO L93 Difference]: Finished difference Result 13987 states and 24105 transitions. [2021-12-06 23:30:54,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 23:30:54,859 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 155 [2021-12-06 23:30:54,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:30:54,896 INFO L225 Difference]: With dead ends: 13987 [2021-12-06 23:30:54,896 INFO L226 Difference]: Without dead ends: 9505 [2021-12-06 23:30:54,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 23:30:54,906 INFO L933 BasicCegarLoop]: 691 mSDtfsCounter, 1340 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 1069 mSolverCounterSat, 630 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1355 SdHoareTripleChecker+Valid, 1458 SdHoareTripleChecker+Invalid, 1699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 630 IncrementalHoareTripleChecker+Valid, 1069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 23:30:54,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1355 Valid, 1458 Invalid, 1699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [630 Valid, 1069 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 23:30:54,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9505 states. [2021-12-06 23:30:55,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9505 to 9304. [2021-12-06 23:30:55,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9304 states, 7694 states have (on average 1.6091759812841175) internal successors, (12381), 7702 states have internal predecessors, (12381), 1582 states have call successors, (1582), 24 states have call predecessors, (1582), 27 states have return successors, (1775), 1579 states have call predecessors, (1775), 1579 states have call successors, (1775) [2021-12-06 23:30:55,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9304 states to 9304 states and 15738 transitions. [2021-12-06 23:30:55,314 INFO L78 Accepts]: Start accepts. Automaton has 9304 states and 15738 transitions. Word has length 155 [2021-12-06 23:30:55,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:30:55,314 INFO L470 AbstractCegarLoop]: Abstraction has 9304 states and 15738 transitions. [2021-12-06 23:30:55,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-06 23:30:55,315 INFO L276 IsEmpty]: Start isEmpty. Operand 9304 states and 15738 transitions. [2021-12-06 23:30:55,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-06 23:30:55,340 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:30:55,340 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:30:55,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 23:30:55,340 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:30:55,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:30:55,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1628764231, now seen corresponding path program 1 times [2021-12-06 23:30:55,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:30:55,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066851961] [2021-12-06 23:30:55,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:30:55,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:30:55,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:55,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:30:55,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:55,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:30:55,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:55,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:30:55,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:55,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 23:30:55,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:55,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:30:55,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:55,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 23:30:55,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:55,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 23:30:55,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:55,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 23:30:55,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:55,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 23:30:55,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:55,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 23:30:55,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:55,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 23:30:55,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:55,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 23:30:55,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:55,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-06 23:30:55,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:55,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-06 23:30:55,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:55,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 23:30:55,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:55,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-06 23:30:55,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:55,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-06 23:30:55,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:55,416 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-06 23:30:55,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:30:55,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066851961] [2021-12-06 23:30:55,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066851961] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:30:55,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:30:55,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 23:30:55,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466858589] [2021-12-06 23:30:55,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:30:55,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:30:55,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:30:55,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:30:55,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:30:55,417 INFO L87 Difference]: Start difference. First operand 9304 states and 15738 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-06 23:30:56,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:30:56,843 INFO L93 Difference]: Finished difference Result 24171 states and 41651 transitions. [2021-12-06 23:30:56,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 23:30:56,843 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 156 [2021-12-06 23:30:56,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:30:56,884 INFO L225 Difference]: With dead ends: 24171 [2021-12-06 23:30:56,884 INFO L226 Difference]: Without dead ends: 16458 [2021-12-06 23:30:56,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 23:30:56,904 INFO L933 BasicCegarLoop]: 713 mSDtfsCounter, 1325 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 626 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1340 SdHoareTripleChecker+Valid, 1512 SdHoareTripleChecker+Invalid, 1718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 626 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 23:30:56,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1340 Valid, 1512 Invalid, 1718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [626 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 23:30:56,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16458 states. [2021-12-06 23:30:57,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16458 to 16257. [2021-12-06 23:30:57,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16257 states, 13444 states have (on average 1.6009372210651591) internal successors, (21523), 13452 states have internal predecessors, (21523), 2785 states have call successors, (2785), 24 states have call predecessors, (2785), 27 states have return successors, (3122), 2782 states have call predecessors, (3122), 2782 states have call successors, (3122) [2021-12-06 23:30:57,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16257 states to 16257 states and 27430 transitions. [2021-12-06 23:30:57,550 INFO L78 Accepts]: Start accepts. Automaton has 16257 states and 27430 transitions. Word has length 156 [2021-12-06 23:30:57,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:30:57,550 INFO L470 AbstractCegarLoop]: Abstraction has 16257 states and 27430 transitions. [2021-12-06 23:30:57,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-06 23:30:57,551 INFO L276 IsEmpty]: Start isEmpty. Operand 16257 states and 27430 transitions. [2021-12-06 23:30:57,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-06 23:30:57,606 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:30:57,606 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:30:57,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 23:30:57,607 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:30:57,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:30:57,607 INFO L85 PathProgramCache]: Analyzing trace with hash 483276447, now seen corresponding path program 1 times [2021-12-06 23:30:57,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:30:57,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394967090] [2021-12-06 23:30:57,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:30:57,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:30:57,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:57,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:30:57,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:57,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:30:57,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:57,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:30:57,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:57,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 23:30:57,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:57,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:30:57,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:57,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 23:30:57,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:57,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 23:30:57,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:57,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 23:30:57,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:57,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 23:30:57,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:57,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 23:30:57,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:57,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 23:30:57,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:57,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 23:30:57,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:57,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 23:30:57,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:57,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-06 23:30:57,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:57,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 23:30:57,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:57,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-06 23:30:57,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:57,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-06 23:30:57,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:57,694 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-06 23:30:57,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:30:57,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394967090] [2021-12-06 23:30:57,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394967090] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:30:57,694 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:30:57,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 23:30:57,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661112952] [2021-12-06 23:30:57,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:30:57,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:30:57,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:30:57,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:30:57,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:30:57,696 INFO L87 Difference]: Start difference. First operand 16257 states and 27430 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-06 23:30:59,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:30:59,508 INFO L93 Difference]: Finished difference Result 43137 states and 74250 transitions. [2021-12-06 23:30:59,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 23:30:59,509 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 157 [2021-12-06 23:30:59,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:30:59,586 INFO L225 Difference]: With dead ends: 43137 [2021-12-06 23:30:59,586 INFO L226 Difference]: Without dead ends: 29113 [2021-12-06 23:30:59,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 23:30:59,608 INFO L933 BasicCegarLoop]: 690 mSDtfsCounter, 1327 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 1080 mSolverCounterSat, 638 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1343 SdHoareTripleChecker+Valid, 1449 SdHoareTripleChecker+Invalid, 1718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 638 IncrementalHoareTripleChecker+Valid, 1080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 23:30:59,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1343 Valid, 1449 Invalid, 1718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [638 Valid, 1080 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 23:30:59,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29113 states. [2021-12-06 23:31:00,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29113 to 28912. [2021-12-06 23:31:00,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28912 states, 24060 states have (on average 1.5971321695760599) internal successors, (38427), 24068 states have internal predecessors, (38427), 4824 states have call successors, (4824), 24 states have call predecessors, (4824), 27 states have return successors, (5435), 4821 states have call predecessors, (5435), 4821 states have call successors, (5435) [2021-12-06 23:31:00,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28912 states to 28912 states and 48686 transitions. [2021-12-06 23:31:00,903 INFO L78 Accepts]: Start accepts. Automaton has 28912 states and 48686 transitions. Word has length 157 [2021-12-06 23:31:00,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:31:00,903 INFO L470 AbstractCegarLoop]: Abstraction has 28912 states and 48686 transitions. [2021-12-06 23:31:00,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-06 23:31:00,903 INFO L276 IsEmpty]: Start isEmpty. Operand 28912 states and 48686 transitions. [2021-12-06 23:31:00,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-12-06 23:31:00,940 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:31:00,941 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:31:00,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 23:31:00,941 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:31:00,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:31:00,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1495521623, now seen corresponding path program 1 times [2021-12-06 23:31:00,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:31:00,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842865001] [2021-12-06 23:31:00,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:31:00,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:31:00,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:00,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:31:00,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:00,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:31:00,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:00,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:31:00,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:00,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 23:31:00,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:00,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:31:00,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:00,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 23:31:00,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:00,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 23:31:00,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:01,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 23:31:01,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:01,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 23:31:01,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:01,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-06 23:31:01,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:01,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 23:31:01,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:01,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 23:31:01,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:01,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 23:31:01,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:01,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-06 23:31:01,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:01,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-06 23:31:01,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:01,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 23:31:01,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:01,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-06 23:31:01,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:01,020 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-06 23:31:01,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:31:01,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842865001] [2021-12-06 23:31:01,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842865001] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:31:01,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:31:01,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 23:31:01,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727274872] [2021-12-06 23:31:01,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:31:01,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:31:01,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:31:01,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:31:01,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:31:01,021 INFO L87 Difference]: Start difference. First operand 28912 states and 48686 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-06 23:31:03,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:31:03,544 INFO L93 Difference]: Finished difference Result 78899 states and 135009 transitions. [2021-12-06 23:31:03,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 23:31:03,545 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 158 [2021-12-06 23:31:03,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:31:03,700 INFO L225 Difference]: With dead ends: 78899 [2021-12-06 23:31:03,700 INFO L226 Difference]: Without dead ends: 52992 [2021-12-06 23:31:03,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 23:31:03,753 INFO L933 BasicCegarLoop]: 690 mSDtfsCounter, 1332 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 1067 mSolverCounterSat, 622 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1348 SdHoareTripleChecker+Valid, 1453 SdHoareTripleChecker+Invalid, 1689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 622 IncrementalHoareTripleChecker+Valid, 1067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 23:31:03,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1348 Valid, 1453 Invalid, 1689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [622 Valid, 1067 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 23:31:03,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52992 states. [2021-12-06 23:31:05,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52992 to 52791. [2021-12-06 23:31:05,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52791 states, 44224 states have (on average 1.5918053545586106) internal successors, (70396), 44232 states have internal predecessors, (70396), 8539 states have call successors, (8539), 24 states have call predecessors, (8539), 27 states have return successors, (9682), 8536 states have call predecessors, (9682), 8536 states have call successors, (9682) [2021-12-06 23:31:06,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52791 states to 52791 states and 88617 transitions. [2021-12-06 23:31:06,080 INFO L78 Accepts]: Start accepts. Automaton has 52791 states and 88617 transitions. Word has length 158 [2021-12-06 23:31:06,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:31:06,080 INFO L470 AbstractCegarLoop]: Abstraction has 52791 states and 88617 transitions. [2021-12-06 23:31:06,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-06 23:31:06,081 INFO L276 IsEmpty]: Start isEmpty. Operand 52791 states and 88617 transitions. [2021-12-06 23:31:06,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-12-06 23:31:06,229 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:31:06,230 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:31:06,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 23:31:06,230 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:31:06,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:31:06,230 INFO L85 PathProgramCache]: Analyzing trace with hash 252721983, now seen corresponding path program 1 times [2021-12-06 23:31:06,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:31:06,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33117375] [2021-12-06 23:31:06,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:31:06,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:31:06,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:06,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:31:06,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:06,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:31:06,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:06,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:31:06,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:06,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 23:31:06,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:06,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:31:06,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:06,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 23:31:06,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:06,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 23:31:06,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:06,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 23:31:06,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:06,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 23:31:06,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:06,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 23:31:06,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:06,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 23:31:06,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:06,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 23:31:06,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:06,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 23:31:06,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:06,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 23:31:06,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:06,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-06 23:31:06,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:06,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 23:31:06,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:06,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-06 23:31:06,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:06,299 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-06 23:31:06,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:31:06,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33117375] [2021-12-06 23:31:06,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33117375] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:31:06,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:31:06,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 23:31:06,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566366082] [2021-12-06 23:31:06,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:31:06,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:31:06,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:31:06,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:31:06,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:31:06,300 INFO L87 Difference]: Start difference. First operand 52791 states and 88617 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-06 23:31:10,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:31:10,344 INFO L93 Difference]: Finished difference Result 98670 states and 169196 transitions. [2021-12-06 23:31:10,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 23:31:10,345 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 159 [2021-12-06 23:31:10,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:31:10,672 INFO L225 Difference]: With dead ends: 98670 [2021-12-06 23:31:10,672 INFO L226 Difference]: Without dead ends: 98451 [2021-12-06 23:31:10,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 23:31:10,714 INFO L933 BasicCegarLoop]: 712 mSDtfsCounter, 1299 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 613 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1314 SdHoareTripleChecker+Valid, 1478 SdHoareTripleChecker+Invalid, 1720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 613 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 23:31:10,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1314 Valid, 1478 Invalid, 1720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [613 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-06 23:31:10,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98451 states. [2021-12-06 23:31:14,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98451 to 98250. [2021-12-06 23:31:14,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98250 states, 82884 states have (on average 1.5849379856184547) internal successors, (131366), 82892 states have internal predecessors, (131366), 15338 states have call successors, (15338), 24 states have call predecessors, (15338), 27 states have return successors, (17527), 15335 states have call predecessors, (17527), 15335 states have call successors, (17527) [2021-12-06 23:31:14,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98250 states to 98250 states and 164231 transitions. [2021-12-06 23:31:14,938 INFO L78 Accepts]: Start accepts. Automaton has 98250 states and 164231 transitions. Word has length 159 [2021-12-06 23:31:14,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:31:14,939 INFO L470 AbstractCegarLoop]: Abstraction has 98250 states and 164231 transitions. [2021-12-06 23:31:14,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-06 23:31:14,939 INFO L276 IsEmpty]: Start isEmpty. Operand 98250 states and 164231 transitions. [2021-12-06 23:31:15,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-06 23:31:15,012 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:31:15,013 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:31:15,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-06 23:31:15,013 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:31:15,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:31:15,013 INFO L85 PathProgramCache]: Analyzing trace with hash 2129525176, now seen corresponding path program 1 times [2021-12-06 23:31:15,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:31:15,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024466888] [2021-12-06 23:31:15,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:31:15,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:31:15,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:15,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:31:15,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:15,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:31:15,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:15,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:31:15,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:15,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 23:31:15,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:15,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:31:15,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:15,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 23:31:15,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:15,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 23:31:15,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:15,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 23:31:15,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:15,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 23:31:15,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:15,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 23:31:15,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:15,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 23:31:15,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:15,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-06 23:31:15,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:15,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 23:31:15,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:15,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-06 23:31:15,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:15,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-06 23:31:15,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:15,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-06 23:31:15,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:15,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-06 23:31:15,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:15,154 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-06 23:31:15,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:31:15,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024466888] [2021-12-06 23:31:15,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024466888] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:31:15,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78585553] [2021-12-06 23:31:15,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:31:15,154 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:31:15,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:31:15,155 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:31:15,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 23:31:15,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:15,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 1295 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-06 23:31:15,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:31:15,499 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-06 23:31:15,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:31:15,783 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-06 23:31:15,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78585553] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:31:15,784 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:31:15,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 9, 9] total 32 [2021-12-06 23:31:15,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048418118] [2021-12-06 23:31:15,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:31:15,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-06 23:31:15,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:31:15,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-06 23:31:15,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=914, Unknown=0, NotChecked=0, Total=992 [2021-12-06 23:31:15,786 INFO L87 Difference]: Start difference. First operand 98250 states and 164231 transitions. Second operand has 32 states, 30 states have (on average 8.333333333333334) internal successors, (250), 24 states have internal predecessors, (250), 9 states have call successors, (51), 12 states have call predecessors, (51), 12 states have return successors, (44), 11 states have call predecessors, (44), 9 states have call successors, (44) [2021-12-06 23:31:58,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:31:58,550 INFO L93 Difference]: Finished difference Result 589704 states and 1034427 transitions. [2021-12-06 23:31:58,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2021-12-06 23:31:58,550 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 8.333333333333334) internal successors, (250), 24 states have internal predecessors, (250), 9 states have call successors, (51), 12 states have call predecessors, (51), 12 states have return successors, (44), 11 states have call predecessors, (44), 9 states have call successors, (44) Word has length 160 [2021-12-06 23:31:58,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:32:01,204 INFO L225 Difference]: With dead ends: 589704 [2021-12-06 23:32:01,204 INFO L226 Difference]: Without dead ends: 589489 [2021-12-06 23:32:01,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 562 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12534 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=4333, Invalid=31199, Unknown=0, NotChecked=0, Total=35532 [2021-12-06 23:32:01,410 INFO L933 BasicCegarLoop]: 2434 mSDtfsCounter, 8581 mSDsluCounter, 15962 mSDsCounter, 0 mSdLazyCounter, 57885 mSolverCounterSat, 10670 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8607 SdHoareTripleChecker+Valid, 18396 SdHoareTripleChecker+Invalid, 68555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 10670 IncrementalHoareTripleChecker+Valid, 57885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.7s IncrementalHoareTripleChecker+Time [2021-12-06 23:32:01,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8607 Valid, 18396 Invalid, 68555 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [10670 Valid, 57885 Invalid, 0 Unknown, 0 Unchecked, 18.7s Time] [2021-12-06 23:32:01,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589489 states. [2021-12-06 23:32:24,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589489 to 391739. [2021-12-06 23:32:24,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391739 states, 330558 states have (on average 1.5855008803296244) internal successors, (524100), 330373 states have internal predecessors, (524100), 61028 states have call successors, (61028), 127 states have call predecessors, (61028), 152 states have return successors, (85006), 61254 states have call predecessors, (85006), 61020 states have call successors, (85006) [2021-12-06 23:32:26,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391739 states to 391739 states and 670134 transitions. [2021-12-06 23:32:26,326 INFO L78 Accepts]: Start accepts. Automaton has 391739 states and 670134 transitions. Word has length 160 [2021-12-06 23:32:26,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:32:26,326 INFO L470 AbstractCegarLoop]: Abstraction has 391739 states and 670134 transitions. [2021-12-06 23:32:26,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 8.333333333333334) internal successors, (250), 24 states have internal predecessors, (250), 9 states have call successors, (51), 12 states have call predecessors, (51), 12 states have return successors, (44), 11 states have call predecessors, (44), 9 states have call successors, (44) [2021-12-06 23:32:26,326 INFO L276 IsEmpty]: Start isEmpty. Operand 391739 states and 670134 transitions. [2021-12-06 23:32:26,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-06 23:32:26,738 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:32:26,738 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:32:26,760 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 23:32:26,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-12-06 23:32:26,939 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:32:26,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:32:26,939 INFO L85 PathProgramCache]: Analyzing trace with hash -154301737, now seen corresponding path program 1 times [2021-12-06 23:32:26,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:32:26,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154620619] [2021-12-06 23:32:26,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:32:26,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:32:26,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:32:26,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:32:26,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:32:26,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:32:26,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:32:26,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:32:26,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:32:26,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 23:32:26,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:32:27,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:32:27,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:32:27,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 23:32:27,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:32:27,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 23:32:27,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:32:27,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 23:32:27,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:32:27,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 23:32:27,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:32:27,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 23:32:27,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:32:27,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 23:32:27,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:32:27,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-06 23:32:27,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:32:27,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-06 23:32:27,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:32:27,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 23:32:27,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:32:27,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-06 23:32:27,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:32:27,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-06 23:32:27,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:32:27,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-06 23:32:27,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:32:27,042 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-06 23:32:27,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:32:27,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154620619] [2021-12-06 23:32:27,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154620619] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:32:27,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:32:27,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 23:32:27,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257272268] [2021-12-06 23:32:27,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:32:27,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 23:32:27,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:32:27,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 23:32:27,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 23:32:27,044 INFO L87 Difference]: Start difference. First operand 391739 states and 670134 transitions. Second operand has 9 states, 8 states have (on average 12.875) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-06 23:32:43,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:32:43,286 INFO L93 Difference]: Finished difference Result 393859 states and 686173 transitions. [2021-12-06 23:32:43,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 23:32:43,286 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 12.875) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 162 [2021-12-06 23:32:43,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:32:44,861 INFO L225 Difference]: With dead ends: 393859 [2021-12-06 23:32:44,861 INFO L226 Difference]: Without dead ends: 392663 [2021-12-06 23:32:45,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=141, Invalid=365, Unknown=0, NotChecked=0, Total=506 [2021-12-06 23:32:45,010 INFO L933 BasicCegarLoop]: 691 mSDtfsCounter, 1201 mSDsluCounter, 1292 mSDsCounter, 0 mSdLazyCounter, 2060 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1201 SdHoareTripleChecker+Valid, 1983 SdHoareTripleChecker+Invalid, 2610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 2060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:32:45,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1201 Valid, 1983 Invalid, 2610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 2060 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 23:32:45,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392663 states. [2021-12-06 23:33:04,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392663 to 391387. [2021-12-06 23:33:04,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391387 states, 330300 states have (on average 1.5857039055404178) internal successors, (523758), 330108 states have internal predecessors, (523758), 60940 states have call successors, (60940), 127 states have call predecessors, (60940), 146 states have return successors, (84899), 61163 states have call predecessors, (84899), 60932 states have call successors, (84899) [2021-12-06 23:33:06,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391387 states to 391387 states and 669597 transitions. [2021-12-06 23:33:06,372 INFO L78 Accepts]: Start accepts. Automaton has 391387 states and 669597 transitions. Word has length 162 [2021-12-06 23:33:06,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:33:06,373 INFO L470 AbstractCegarLoop]: Abstraction has 391387 states and 669597 transitions. [2021-12-06 23:33:06,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 12.875) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-06 23:33:06,373 INFO L276 IsEmpty]: Start isEmpty. Operand 391387 states and 669597 transitions. [2021-12-06 23:33:06,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-06 23:33:06,907 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:33:06,907 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:33:06,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-06 23:33:06,907 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:33:06,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:33:06,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1118725135, now seen corresponding path program 1 times [2021-12-06 23:33:06,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:33:06,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753071663] [2021-12-06 23:33:06,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:33:06,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:33:06,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:06,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:33:06,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:06,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:33:06,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:06,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:33:06,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:06,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 23:33:06,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:06,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:33:06,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:06,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 23:33:06,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:06,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 23:33:06,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:06,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 23:33:06,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:06,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 23:33:06,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:06,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 23:33:06,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:06,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 23:33:06,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:07,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-06 23:33:07,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:07,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-06 23:33:07,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:07,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 23:33:07,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:07,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-06 23:33:07,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:07,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-06 23:33:07,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:07,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-06 23:33:07,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:07,007 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-06 23:33:07,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:33:07,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753071663] [2021-12-06 23:33:07,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753071663] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:33:07,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810538451] [2021-12-06 23:33:07,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:33:07,008 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:33:07,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:33:07,009 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:33:07,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 23:33:07,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:07,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 1297 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 23:33:07,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:33:07,314 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-06 23:33:07,314 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:33:07,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810538451] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:33:07,314 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:33:07,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 20 [2021-12-06 23:33:07,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513083689] [2021-12-06 23:33:07,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:33:07,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 23:33:07,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:33:07,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 23:33:07,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2021-12-06 23:33:07,315 INFO L87 Difference]: Start difference. First operand 391387 states and 669597 transitions. Second operand has 9 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-06 23:33:22,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:33:22,643 INFO L93 Difference]: Finished difference Result 393163 states and 672139 transitions. [2021-12-06 23:33:22,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 23:33:22,645 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 162 [2021-12-06 23:33:22,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:33:24,080 INFO L225 Difference]: With dead ends: 393163 [2021-12-06 23:33:24,080 INFO L226 Difference]: Without dead ends: 391629 [2021-12-06 23:33:24,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2021-12-06 23:33:24,194 INFO L933 BasicCegarLoop]: 533 mSDtfsCounter, 865 mSDsluCounter, 3180 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 868 SdHoareTripleChecker+Valid, 3713 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:33:24,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [868 Valid, 3713 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:33:24,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391629 states. [2021-12-06 23:33:43,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391629 to 391615. [2021-12-06 23:33:44,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391615 states, 330450 states have (on average 1.5855954002118324) internal successors, (523960), 330268 states have internal predecessors, (523960), 61014 states have call successors, (61014), 131 states have call predecessors, (61014), 150 states have return successors, (84997), 61235 states have call predecessors, (84997), 61006 states have call successors, (84997) [2021-12-06 23:33:45,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391615 states to 391615 states and 669971 transitions. [2021-12-06 23:33:45,674 INFO L78 Accepts]: Start accepts. Automaton has 391615 states and 669971 transitions. Word has length 162 [2021-12-06 23:33:45,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:33:45,674 INFO L470 AbstractCegarLoop]: Abstraction has 391615 states and 669971 transitions. [2021-12-06 23:33:45,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-06 23:33:45,675 INFO L276 IsEmpty]: Start isEmpty. Operand 391615 states and 669971 transitions. [2021-12-06 23:33:46,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-06 23:33:46,060 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:33:46,060 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:33:46,085 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 23:33:46,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-12-06 23:33:46,262 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:33:46,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:33:46,263 INFO L85 PathProgramCache]: Analyzing trace with hash 270361625, now seen corresponding path program 1 times [2021-12-06 23:33:46,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:33:46,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196499023] [2021-12-06 23:33:46,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:33:46,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:33:46,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:46,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:33:46,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:46,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:33:46,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:46,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 23:33:46,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:46,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 23:33:46,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:46,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 23:33:46,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:46,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 23:33:46,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:46,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 23:33:46,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:46,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 23:33:46,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:46,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 23:33:46,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:46,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 23:33:46,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:46,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 23:33:46,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:46,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-06 23:33:46,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:46,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-06 23:33:46,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:46,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 23:33:46,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:46,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-06 23:33:46,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:46,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-06 23:33:46,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:46,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-06 23:33:46,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:46,367 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-06 23:33:46,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:33:46,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196499023] [2021-12-06 23:33:46,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196499023] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:33:46,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875374736] [2021-12-06 23:33:46,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:33:46,367 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:33:46,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:33:46,368 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:33:46,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 23:33:46,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:46,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 1297 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 23:33:46,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:33:46,628 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-06 23:33:46,628 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:33:46,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875374736] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:33:46,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:33:46,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-12-06 23:33:46,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105568104] [2021-12-06 23:33:46,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:33:46,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:33:46,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:33:46,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:33:46,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-06 23:33:46,629 INFO L87 Difference]: Start difference. First operand 391615 states and 669971 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-06 23:34:03,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:34:03,784 INFO L93 Difference]: Finished difference Result 587428 states and 1009289 transitions. [2021-12-06 23:34:03,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:34:03,785 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 162 [2021-12-06 23:34:03,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:34:05,541 INFO L225 Difference]: With dead ends: 587428 [2021-12-06 23:34:05,541 INFO L226 Difference]: Without dead ends: 391631 [2021-12-06 23:34:05,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-12-06 23:34:05,918 INFO L933 BasicCegarLoop]: 538 mSDtfsCounter, 124 mSDsluCounter, 1462 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 2000 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:34:05,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 2000 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:34:06,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391631 states. [2021-12-06 23:34:26,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391631 to 391615. [2021-12-06 23:34:26,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391615 states, 330450 states have (on average 1.5855893478589802) internal successors, (523958), 330268 states have internal predecessors, (523958), 61014 states have call successors, (61014), 131 states have call predecessors, (61014), 150 states have return successors, (84997), 61235 states have call predecessors, (84997), 61006 states have call successors, (84997) [2021-12-06 23:34:27,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391615 states to 391615 states and 669969 transitions. [2021-12-06 23:34:27,962 INFO L78 Accepts]: Start accepts. Automaton has 391615 states and 669969 transitions. Word has length 162 [2021-12-06 23:34:27,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:34:27,962 INFO L470 AbstractCegarLoop]: Abstraction has 391615 states and 669969 transitions. [2021-12-06 23:34:27,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-06 23:34:27,962 INFO L276 IsEmpty]: Start isEmpty. Operand 391615 states and 669969 transitions. [2021-12-06 23:34:28,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-06 23:34:28,352 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:34:28,353 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:34:28,377 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-06 23:34:28,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-12-06 23:34:28,554 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:34:28,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:34:28,555 INFO L85 PathProgramCache]: Analyzing trace with hash 992575180, now seen corresponding path program 1 times [2021-12-06 23:34:28,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:34:28,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615886347] [2021-12-06 23:34:28,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:34:28,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:34:28,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:34:28,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:34:28,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:34:28,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:34:28,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:34:28,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:34:28,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:34:28,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 23:34:28,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:34:28,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:34:28,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:34:28,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 23:34:28,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:34:28,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 23:34:28,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:34:28,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 23:34:28,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:34:28,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 23:34:28,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:34:28,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 23:34:28,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:34:28,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 23:34:28,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:34:28,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 23:34:28,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:34:28,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-06 23:34:28,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:34:28,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 23:34:28,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:34:28,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-06 23:34:28,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:34:28,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-06 23:34:28,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:34:28,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-06 23:34:28,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:34:28,824 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-06 23:34:28,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:34:28,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615886347] [2021-12-06 23:34:28,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615886347] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:34:28,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027029550] [2021-12-06 23:34:28,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:34:28,824 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:34:28,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:34:28,825 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:34:28,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 23:34:28,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:34:28,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 1297 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-06 23:34:28,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:34:29,358 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-06 23:34:29,359 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:34:29,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027029550] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:34:29,359 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:34:29,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 25 [2021-12-06 23:34:29,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257669471] [2021-12-06 23:34:29,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:34:29,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 23:34:29,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:34:29,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 23:34:29,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=541, Unknown=0, NotChecked=0, Total=600 [2021-12-06 23:34:29,360 INFO L87 Difference]: Start difference. First operand 391615 states and 669969 transitions. Second operand has 14 states, 12 states have (on average 10.0) internal successors, (120), 11 states have internal predecessors, (120), 6 states have call successors, (20), 5 states have call predecessors, (20), 7 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2021-12-06 23:35:04,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:35:04,256 INFO L93 Difference]: Finished difference Result 778565 states and 1353621 transitions. [2021-12-06 23:35:04,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-06 23:35:04,257 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 10.0) internal successors, (120), 11 states have internal predecessors, (120), 6 states have call successors, (20), 5 states have call predecessors, (20), 7 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) Word has length 163 [2021-12-06 23:35:04,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:35:07,404 INFO L225 Difference]: With dead ends: 778565 [2021-12-06 23:35:07,405 INFO L226 Difference]: Without dead ends: 777187 [2021-12-06 23:35:07,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=164, Invalid=1396, Unknown=0, NotChecked=0, Total=1560 [2021-12-06 23:35:07,685 INFO L933 BasicCegarLoop]: 648 mSDtfsCounter, 1874 mSDsluCounter, 4767 mSDsCounter, 0 mSdLazyCounter, 2091 mSolverCounterSat, 570 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1878 SdHoareTripleChecker+Valid, 5415 SdHoareTripleChecker+Invalid, 2661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 570 IncrementalHoareTripleChecker+Valid, 2091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 23:35:07,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1878 Valid, 5415 Invalid, 2661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [570 Valid, 2091 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 23:35:08,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777187 states. [2021-12-06 23:35:51,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777187 to 776435. [2021-12-06 23:35:52,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776435 states, 655390 states have (on average 1.5868200613375243) internal successors, (1039986), 654678 states have internal predecessors, (1039986), 120718 states have call successors, (120718), 287 states have call predecessors, (120718), 326 states have return successors, (189795), 121513 states have call predecessors, (189795), 120702 states have call successors, (189795) [2021-12-06 23:35:55,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776435 states to 776435 states and 1350499 transitions. [2021-12-06 23:35:55,237 INFO L78 Accepts]: Start accepts. Automaton has 776435 states and 1350499 transitions. Word has length 163 [2021-12-06 23:35:55,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:35:55,237 INFO L470 AbstractCegarLoop]: Abstraction has 776435 states and 1350499 transitions. [2021-12-06 23:35:55,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 10.0) internal successors, (120), 11 states have internal predecessors, (120), 6 states have call successors, (20), 5 states have call predecessors, (20), 7 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2021-12-06 23:35:55,238 INFO L276 IsEmpty]: Start isEmpty. Operand 776435 states and 1350499 transitions. [2021-12-06 23:35:56,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-06 23:35:56,158 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:35:56,159 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:35:56,182 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-06 23:35:56,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-12-06 23:35:56,360 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:35:56,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:35:56,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1761745195, now seen corresponding path program 1 times [2021-12-06 23:35:56,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:35:56,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712568971] [2021-12-06 23:35:56,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:35:56,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:35:56,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:35:56,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:35:56,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:35:56,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:35:56,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:35:56,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:35:56,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:35:56,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 23:35:56,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:35:56,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:35:56,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:35:56,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 23:35:56,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:35:56,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 23:35:56,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:35:56,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 23:35:56,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:35:56,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 23:35:56,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:35:56,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 23:35:56,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:35:56,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 23:35:56,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:35:56,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 23:35:56,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:35:56,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-06 23:35:56,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:35:56,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 23:35:56,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:35:56,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-06 23:35:56,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:35:56,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-06 23:35:56,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:35:56,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-06 23:35:56,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:35:56,484 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-06 23:35:56,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:35:56,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712568971] [2021-12-06 23:35:56,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712568971] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:35:56,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893503043] [2021-12-06 23:35:56,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:35:56,485 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:35:56,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:35:56,485 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:35:56,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-06 23:35:56,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:35:56,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 1296 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 23:35:56,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:35:56,800 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 23:35:56,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:35:56,958 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-06 23:35:56,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893503043] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-06 23:35:56,958 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:35:56,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13, 5] total 18 [2021-12-06 23:35:56,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287432662] [2021-12-06 23:35:56,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:35:56,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 23:35:56,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:35:56,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 23:35:56,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2021-12-06 23:35:56,959 INFO L87 Difference]: Start difference. First operand 776435 states and 1350499 transitions. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 5 states have internal predecessors, (105), 3 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-06 23:36:33,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:36:33,570 INFO L93 Difference]: Finished difference Result 786245 states and 1364316 transitions. [2021-12-06 23:36:33,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 23:36:33,571 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 5 states have internal predecessors, (105), 3 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 163 [2021-12-06 23:36:33,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:36:36,809 INFO L225 Difference]: With dead ends: 786245 [2021-12-06 23:36:36,810 INFO L226 Difference]: Without dead ends: 783087 [2021-12-06 23:36:37,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 350 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2021-12-06 23:36:37,083 INFO L933 BasicCegarLoop]: 761 mSDtfsCounter, 1004 mSDsluCounter, 1956 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1008 SdHoareTripleChecker+Valid, 2717 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:36:37,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1008 Valid, 2717 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 23:36:37,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783087 states. [2021-12-06 23:37:24,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783087 to 782957. [2021-12-06 23:37:24,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 782957 states, 660294 states have (on average 1.5854816187940524) internal successors, (1046884), 659760 states have internal predecessors, (1046884), 121732 states have call successors, (121732), 773 states have call predecessors, (121732), 930 states have return successors, (191024), 122547 states have call predecessors, (191024), 121688 states have call successors, (191024) [2021-12-06 23:37:28,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782957 states to 782957 states and 1359640 transitions. [2021-12-06 23:37:28,019 INFO L78 Accepts]: Start accepts. Automaton has 782957 states and 1359640 transitions. Word has length 163 [2021-12-06 23:37:28,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:37:28,020 INFO L470 AbstractCegarLoop]: Abstraction has 782957 states and 1359640 transitions. [2021-12-06 23:37:28,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 5 states have internal predecessors, (105), 3 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-06 23:37:28,020 INFO L276 IsEmpty]: Start isEmpty. Operand 782957 states and 1359640 transitions. [2021-12-06 23:37:29,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-12-06 23:37:29,188 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:37:29,188 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:37:29,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-06 23:37:29,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:37:29,389 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:37:29,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:37:29,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1048711104, now seen corresponding path program 1 times [2021-12-06 23:37:29,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:37:29,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853386285] [2021-12-06 23:37:29,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:37:29,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:37:29,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:37:29,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:37:29,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:37:29,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:37:29,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:37:29,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:37:29,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:37:29,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 23:37:29,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:37:29,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:37:29,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:37:29,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 23:37:29,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:37:29,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 23:37:29,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:37:29,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 23:37:29,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:37:29,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 23:37:29,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:37:29,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 23:37:29,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:37:29,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 23:37:29,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:37:29,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 23:37:29,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:37:29,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-06 23:37:29,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:37:29,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-06 23:37:29,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:37:29,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-06 23:37:29,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:37:29,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-06 23:37:29,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:37:29,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-06 23:37:29,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:37:29,537 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-06 23:37:29,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:37:29,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853386285] [2021-12-06 23:37:29,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853386285] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:37:29,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77413567] [2021-12-06 23:37:29,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:37:29,538 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:37:29,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:37:29,539 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:37:29,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-06 23:37:29,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:37:29,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 1297 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-06 23:37:29,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:37:29,976 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 23:37:29,976 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:37:29,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77413567] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:37:29,976 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:37:29,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [13] total 23 [2021-12-06 23:37:29,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723515646] [2021-12-06 23:37:29,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:37:29,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 23:37:29,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:37:29,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 23:37:29,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2021-12-06 23:37:29,978 INFO L87 Difference]: Start difference. First operand 782957 states and 1359640 transitions. Second operand has 12 states, 10 states have (on average 11.4) internal successors, (114), 11 states have internal predecessors, (114), 8 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 6 states have call predecessors, (17), 7 states have call successors, (17) [2021-12-06 23:38:06,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:38:06,759 INFO L93 Difference]: Finished difference Result 787223 states and 1365612 transitions. [2021-12-06 23:38:06,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 23:38:06,760 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 11.4) internal successors, (114), 11 states have internal predecessors, (114), 8 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 6 states have call predecessors, (17), 7 states have call successors, (17) Word has length 164 [2021-12-06 23:38:06,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:38:09,922 INFO L225 Difference]: With dead ends: 787223 [2021-12-06 23:38:09,922 INFO L226 Difference]: Without dead ends: 781241 [2021-12-06 23:38:10,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=785, Unknown=0, NotChecked=0, Total=870 [2021-12-06 23:38:10,198 INFO L933 BasicCegarLoop]: 552 mSDtfsCounter, 514 mSDsluCounter, 5047 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 5599 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:38:10,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [514 Valid, 5599 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:38:10,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781241 states. [2021-12-06 23:38:56,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781241 to 780056. [2021-12-06 23:38:57,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780056 states, 658149 states have (on average 1.586156022420455) internal successors, (1043927), 657556 states have internal predecessors, (1043927), 121215 states have call successors, (121215), 579 states have call predecessors, (121215), 691 states have return successors, (190399), 122009 states have call predecessors, (190399), 121185 states have call successors, (190399) [2021-12-06 23:39:00,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780056 states to 780056 states and 1355541 transitions. [2021-12-06 23:39:00,412 INFO L78 Accepts]: Start accepts. Automaton has 780056 states and 1355541 transitions. Word has length 164 [2021-12-06 23:39:00,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:39:00,412 INFO L470 AbstractCegarLoop]: Abstraction has 780056 states and 1355541 transitions. [2021-12-06 23:39:00,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 11.4) internal successors, (114), 11 states have internal predecessors, (114), 8 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 6 states have call predecessors, (17), 7 states have call successors, (17) [2021-12-06 23:39:00,412 INFO L276 IsEmpty]: Start isEmpty. Operand 780056 states and 1355541 transitions. [2021-12-06 23:39:01,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-12-06 23:39:01,520 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:39:01,520 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:39:01,544 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-12-06 23:39:01,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-12-06 23:39:01,722 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:39:01,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:39:01,723 INFO L85 PathProgramCache]: Analyzing trace with hash -608928166, now seen corresponding path program 1 times [2021-12-06 23:39:01,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:39:01,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018139152] [2021-12-06 23:39:01,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:39:01,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:39:01,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:39:01,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:39:01,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:39:01,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:39:01,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:39:01,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:39:01,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:39:01,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 23:39:01,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:39:01,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:39:01,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:39:01,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 23:39:01,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:39:01,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 23:39:01,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:39:01,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 23:39:01,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:39:01,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 23:39:01,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:39:01,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 23:39:01,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:39:01,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 23:39:01,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:39:01,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 23:39:01,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:39:01,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-06 23:39:01,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:39:01,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-06 23:39:01,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:39:01,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-06 23:39:01,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:39:01,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-06 23:39:01,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:39:01,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-06 23:39:01,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:39:01,922 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-06 23:39:01,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:39:01,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018139152] [2021-12-06 23:39:01,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018139152] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:39:01,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686294880] [2021-12-06 23:39:01,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:39:01,923 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:39:01,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:39:01,923 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:39:01,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6f2b23-0d97-4916-97e3-5b469f0a1d97/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-06 23:39:02,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:39:02,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 1319 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-06 23:39:02,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:39:02,329 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 27 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 23:39:02,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:39:02,566 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-06 23:39:02,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686294880] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-06 23:39:02,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:39:02,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [20, 13] total 35 [2021-12-06 23:39:02,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173985666] [2021-12-06 23:39:02,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:39:02,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 23:39:02,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:39:02,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 23:39:02,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=1098, Unknown=0, NotChecked=0, Total=1190 [2021-12-06 23:39:02,568 INFO L87 Difference]: Start difference. First operand 780056 states and 1355541 transitions. Second operand has 13 states, 11 states have (on average 10.090909090909092) internal successors, (111), 11 states have internal predecessors, (111), 6 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2021-12-06 23:39:44,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:39:44,271 INFO L93 Difference]: Finished difference Result 789524 states and 1368928 transitions. [2021-12-06 23:39:44,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 23:39:44,271 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 10.090909090909092) internal successors, (111), 11 states have internal predecessors, (111), 6 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) Word has length 165 [2021-12-06 23:39:44,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:39:47,454 INFO L225 Difference]: With dead ends: 789524 [2021-12-06 23:39:47,454 INFO L226 Difference]: Without dead ends: 783149 [2021-12-06 23:39:47,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 345 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=236, Invalid=2314, Unknown=0, NotChecked=0, Total=2550 [2021-12-06 23:39:47,722 INFO L933 BasicCegarLoop]: 588 mSDtfsCounter, 1561 mSDsluCounter, 4344 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 467 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1570 SdHoareTripleChecker+Valid, 4932 SdHoareTripleChecker+Invalid, 1168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 467 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 23:39:47,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1570 Valid, 4932 Invalid, 1168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [467 Valid, 701 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 23:39:48,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783149 states.