./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec6_product30.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92ebc87-4285-4df7-b906-c45c0c27283d/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92ebc87-4285-4df7-b906-c45c0c27283d/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92ebc87-4285-4df7-b906-c45c0c27283d/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92ebc87-4285-4df7-b906-c45c0c27283d/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec6_product30.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92ebc87-4285-4df7-b906-c45c0c27283d/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92ebc87-4285-4df7-b906-c45c0c27283d/bin/uautomizer-vX5HgA9Q3a --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 c6648e04749112dcff3ed26da66b003a84ec072cad34992d8bd41fd0d54f135f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 13:49:55,782 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 13:49:55,784 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 13:49:55,815 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 13:49:55,816 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 13:49:55,820 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 13:49:55,823 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 13:49:55,826 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 13:49:55,829 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 13:49:55,835 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 13:49:55,837 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 13:49:55,840 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 13:49:55,841 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 13:49:55,847 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 13:49:55,848 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 13:49:55,851 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 13:49:55,852 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 13:49:55,854 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 13:49:55,856 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 13:49:55,862 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 13:49:55,865 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 13:49:55,867 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 13:49:55,869 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 13:49:55,870 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 13:49:55,878 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 13:49:55,880 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 13:49:55,880 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 13:49:55,882 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 13:49:55,883 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 13:49:55,885 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 13:49:55,886 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 13:49:55,887 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 13:49:55,889 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 13:49:55,890 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 13:49:55,891 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 13:49:55,891 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 13:49:55,892 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 13:49:55,892 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 13:49:55,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 13:49:55,895 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 13:49:55,895 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 13:49:55,896 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92ebc87-4285-4df7-b906-c45c0c27283d/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 13:49:55,933 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 13:49:55,934 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 13:49:55,937 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 13:49:55,937 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 13:49:55,938 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 13:49:55,938 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 13:49:55,939 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 13:49:55,939 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 13:49:55,939 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 13:49:55,940 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 13:49:55,941 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 13:49:55,941 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 13:49:55,941 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 13:49:55,942 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 13:49:55,942 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 13:49:55,942 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 13:49:55,942 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 13:49:55,943 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 13:49:55,943 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 13:49:55,943 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 13:49:55,943 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 13:49:55,944 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 13:49:55,944 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 13:49:55,944 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 13:49:55,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:49:55,945 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 13:49:55,945 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 13:49:55,945 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 13:49:55,945 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 13:49:55,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 13:49:55,946 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 13:49:55,946 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 13:49:55,947 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 13:49:55,947 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_d92ebc87-4285-4df7-b906-c45c0c27283d/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92ebc87-4285-4df7-b906-c45c0c27283d/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c6648e04749112dcff3ed26da66b003a84ec072cad34992d8bd41fd0d54f135f [2022-11-21 13:49:56,214 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 13:49:56,249 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 13:49:56,252 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 13:49:56,253 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 13:49:56,254 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 13:49:56,255 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92ebc87-4285-4df7-b906-c45c0c27283d/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/product-lines/email_spec6_product30.cil.c [2022-11-21 13:49:59,401 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 13:49:59,792 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 13:49:59,792 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92ebc87-4285-4df7-b906-c45c0c27283d/sv-benchmarks/c/product-lines/email_spec6_product30.cil.c [2022-11-21 13:49:59,818 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92ebc87-4285-4df7-b906-c45c0c27283d/bin/uautomizer-vX5HgA9Q3a/data/0982472fd/4ebb6e16bbc047adae7036f7a7a3c9a4/FLAGb0607d08e [2022-11-21 13:49:59,843 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92ebc87-4285-4df7-b906-c45c0c27283d/bin/uautomizer-vX5HgA9Q3a/data/0982472fd/4ebb6e16bbc047adae7036f7a7a3c9a4 [2022-11-21 13:49:59,848 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 13:49:59,851 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 13:49:59,855 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 13:49:59,856 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 13:49:59,859 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 13:49:59,860 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:49:59" (1/1) ... [2022-11-21 13:49:59,861 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44273b1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:59, skipping insertion in model container [2022-11-21 13:49:59,862 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:49:59" (1/1) ... [2022-11-21 13:49:59,870 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 13:49:59,944 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 13:50:00,589 WARN L237 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_d92ebc87-4285-4df7-b906-c45c0c27283d/sv-benchmarks/c/product-lines/email_spec6_product30.cil.c[64728,64741] [2022-11-21 13:50:00,596 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:50:00,616 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 13:50:00,771 WARN L237 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_d92ebc87-4285-4df7-b906-c45c0c27283d/sv-benchmarks/c/product-lines/email_spec6_product30.cil.c[64728,64741] [2022-11-21 13:50:00,772 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:50:00,803 INFO L208 MainTranslator]: Completed translation [2022-11-21 13:50:00,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:50:00 WrapperNode [2022-11-21 13:50:00,804 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 13:50:00,805 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 13:50:00,805 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 13:50:00,806 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 13:50:00,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:50:00" (1/1) ... [2022-11-21 13:50:00,858 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:50:00" (1/1) ... [2022-11-21 13:50:00,911 INFO L138 Inliner]: procedures = 132, calls = 225, calls flagged for inlining = 61, calls inlined = 51, statements flattened = 936 [2022-11-21 13:50:00,912 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 13:50:00,913 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 13:50:00,913 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 13:50:00,913 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 13:50:00,923 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:50:00" (1/1) ... [2022-11-21 13:50:00,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:50:00" (1/1) ... [2022-11-21 13:50:00,929 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:50:00" (1/1) ... [2022-11-21 13:50:00,929 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:50:00" (1/1) ... [2022-11-21 13:50:00,947 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:50:00" (1/1) ... [2022-11-21 13:50:00,956 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:50:00" (1/1) ... [2022-11-21 13:50:00,961 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:50:00" (1/1) ... [2022-11-21 13:50:00,964 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:50:00" (1/1) ... [2022-11-21 13:50:00,973 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 13:50:00,974 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 13:50:00,974 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 13:50:00,983 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 13:50:00,984 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:50:00" (1/1) ... [2022-11-21 13:50:00,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:50:01,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92ebc87-4285-4df7-b906-c45c0c27283d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:50:01,015 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92ebc87-4285-4df7-b906-c45c0c27283d/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 13:50:01,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92ebc87-4285-4df7-b906-c45c0c27283d/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 13:50:01,054 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-21 13:50:01,054 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-21 13:50:01,054 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-21 13:50:01,054 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-21 13:50:01,055 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-21 13:50:01,055 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-21 13:50:01,055 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-21 13:50:01,055 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-21 13:50:01,055 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-21 13:50:01,055 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-21 13:50:01,056 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-21 13:50:01,056 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-21 13:50:01,056 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-21 13:50:01,056 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-21 13:50:01,056 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-21 13:50:01,056 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-21 13:50:01,056 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-21 13:50:01,057 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-21 13:50:01,057 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-21 13:50:01,057 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-21 13:50:01,057 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-21 13:50:01,057 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-21 13:50:01,057 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-21 13:50:01,058 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-21 13:50:01,058 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-21 13:50:01,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 13:50:01,058 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-21 13:50:01,058 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-21 13:50:01,058 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-21 13:50:01,058 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-21 13:50:01,059 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-21 13:50:01,059 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-21 13:50:01,059 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-21 13:50:01,059 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-21 13:50:01,059 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-21 13:50:01,094 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-21 13:50:01,094 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-21 13:50:01,095 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-21 13:50:01,095 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-21 13:50:01,095 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-21 13:50:01,095 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-21 13:50:01,095 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-21 13:50:01,095 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-21 13:50:01,095 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-21 13:50:01,096 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-21 13:50:01,096 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-21 13:50:01,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 13:50:01,096 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-21 13:50:01,096 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-21 13:50:01,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 13:50:01,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 13:50:01,336 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 13:50:01,339 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 13:50:02,423 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 13:50:02,442 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 13:50:02,442 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-21 13:50:02,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:50:02 BoogieIcfgContainer [2022-11-21 13:50:02,445 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 13:50:02,447 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 13:50:02,448 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 13:50:02,457 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 13:50:02,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:49:59" (1/3) ... [2022-11-21 13:50:02,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32b0c3bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:50:02, skipping insertion in model container [2022-11-21 13:50:02,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:50:00" (2/3) ... [2022-11-21 13:50:02,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32b0c3bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:50:02, skipping insertion in model container [2022-11-21 13:50:02,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:50:02" (3/3) ... [2022-11-21 13:50:02,462 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec6_product30.cil.c [2022-11-21 13:50:02,482 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 13:50:02,483 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 13:50:02,548 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 13:50:02,556 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@497882d1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 13:50:02,556 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 13:50:02,562 INFO L276 IsEmpty]: Start isEmpty. Operand has 352 states, 272 states have (on average 1.5110294117647058) internal successors, (411), 276 states have internal predecessors, (411), 55 states have call successors, (55), 23 states have call predecessors, (55), 23 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-11-21 13:50:02,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-21 13:50:02,582 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:50:02,583 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:50:02,583 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:50:02,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:50:02,589 INFO L85 PathProgramCache]: Analyzing trace with hash -770456183, now seen corresponding path program 1 times [2022-11-21 13:50:02,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:50:02,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428502910] [2022-11-21 13:50:02,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:50:02,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:50:02,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:03,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:50:03,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:03,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:50:03,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:03,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 13:50:03,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:03,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 13:50:03,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:03,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-21 13:50:03,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:03,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-21 13:50:03,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:03,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-21 13:50:03,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:03,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-21 13:50:03,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:03,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-21 13:50:03,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:03,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-21 13:50:03,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:03,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-21 13:50:03,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:03,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-21 13:50:03,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:03,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-21 13:50:03,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:03,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-21 13:50:03,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:03,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-21 13:50:03,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:03,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-21 13:50:03,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:03,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-21 13:50:03,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:03,511 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-21 13:50:03,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:50:03,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428502910] [2022-11-21 13:50:03,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428502910] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:50:03,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519563033] [2022-11-21 13:50:03,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:50:03,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:50:03,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92ebc87-4285-4df7-b906-c45c0c27283d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:50:03,518 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92ebc87-4285-4df7-b906-c45c0c27283d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:50:03,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92ebc87-4285-4df7-b906-c45c0c27283d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 13:50:03,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:03,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 1175 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-21 13:50:03,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:50:04,027 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-21 13:50:04,027 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:50:04,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519563033] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:50:04,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:50:04,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2022-11-21 13:50:04,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307379215] [2022-11-21 13:50:04,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:50:04,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 13:50:04,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:50:04,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 13:50:04,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-21 13:50:04,077 INFO L87 Difference]: Start difference. First operand has 352 states, 272 states have (on average 1.5110294117647058) internal successors, (411), 276 states have internal predecessors, (411), 55 states have call successors, (55), 23 states have call predecessors, (55), 23 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) Second operand has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-21 13:50:04,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:50:04,156 INFO L93 Difference]: Finished difference Result 550 states and 796 transitions. [2022-11-21 13:50:04,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 13:50:04,159 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 126 [2022-11-21 13:50:04,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:50:04,175 INFO L225 Difference]: With dead ends: 550 [2022-11-21 13:50:04,175 INFO L226 Difference]: Without dead ends: 345 [2022-11-21 13:50:04,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-21 13:50:04,184 INFO L413 NwaCegarLoop]: 517 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, 517 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:50:04,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:50:04,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-11-21 13:50:04,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2022-11-21 13:50:04,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 266 states have (on average 1.5037593984962405) internal successors, (400), 269 states have internal predecessors, (400), 55 states have call successors, (55), 23 states have call predecessors, (55), 23 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2022-11-21 13:50:04,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 509 transitions. [2022-11-21 13:50:04,296 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 509 transitions. Word has length 126 [2022-11-21 13:50:04,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:50:04,301 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 509 transitions. [2022-11-21 13:50:04,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-21 13:50:04,302 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 509 transitions. [2022-11-21 13:50:04,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-21 13:50:04,315 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:50:04,316 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:50:04,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92ebc87-4285-4df7-b906-c45c0c27283d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 13:50:04,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92ebc87-4285-4df7-b906-c45c0c27283d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-21 13:50:04,519 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:50:04,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:50:04,520 INFO L85 PathProgramCache]: Analyzing trace with hash -682131900, now seen corresponding path program 1 times [2022-11-21 13:50:04,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:50:04,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130070219] [2022-11-21 13:50:04,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:50:04,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:50:04,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:04,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:50:04,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:04,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:50:04,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:04,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 13:50:04,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:04,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 13:50:04,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:04,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-21 13:50:04,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:04,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-21 13:50:04,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:04,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-21 13:50:04,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:04,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-21 13:50:04,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:04,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 13:50:04,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:04,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-21 13:50:04,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:04,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-21 13:50:04,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:04,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-21 13:50:04,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:04,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-21 13:50:04,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:04,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-21 13:50:04,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:04,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-21 13:50:04,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:04,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-21 13:50:04,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:04,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-21 13:50:04,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:04,989 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-21 13:50:04,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:50:04,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130070219] [2022-11-21 13:50:04,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130070219] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:50:04,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663111181] [2022-11-21 13:50:04,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:50:04,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:50:04,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92ebc87-4285-4df7-b906-c45c0c27283d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:50:04,998 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92ebc87-4285-4df7-b906-c45c0c27283d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:50:05,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92ebc87-4285-4df7-b906-c45c0c27283d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 13:50:05,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:05,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 1176 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 13:50:05,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:50:05,430 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-21 13:50:05,430 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:50:05,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663111181] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:50:05,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:50:05,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-11-21 13:50:05,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925348278] [2022-11-21 13:50:05,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:50:05,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:50:05,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:50:05,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:50:05,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-21 13:50:05,434 INFO L87 Difference]: Start difference. First operand 345 states and 509 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-21 13:50:05,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:50:05,495 INFO L93 Difference]: Finished difference Result 540 states and 777 transitions. [2022-11-21 13:50:05,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:50:05,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 127 [2022-11-21 13:50:05,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:50:05,500 INFO L225 Difference]: With dead ends: 540 [2022-11-21 13:50:05,500 INFO L226 Difference]: Without dead ends: 348 [2022-11-21 13:50:05,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-21 13:50:05,504 INFO L413 NwaCegarLoop]: 507 mSDtfsCounter, 1 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:50:05,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1012 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:50:05,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2022-11-21 13:50:05,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 347. [2022-11-21 13:50:05,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 268 states have (on average 1.5) internal successors, (402), 271 states have internal predecessors, (402), 55 states have call successors, (55), 23 states have call predecessors, (55), 23 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2022-11-21 13:50:05,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 511 transitions. [2022-11-21 13:50:05,534 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 511 transitions. Word has length 127 [2022-11-21 13:50:05,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:50:05,535 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 511 transitions. [2022-11-21 13:50:05,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-21 13:50:05,536 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 511 transitions. [2022-11-21 13:50:05,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-21 13:50:05,539 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:50:05,540 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:50:05,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92ebc87-4285-4df7-b906-c45c0c27283d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 13:50:05,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92ebc87-4285-4df7-b906-c45c0c27283d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:50:05,756 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:50:05,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:50:05,757 INFO L85 PathProgramCache]: Analyzing trace with hash -744377666, now seen corresponding path program 1 times [2022-11-21 13:50:05,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:50:05,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285135488] [2022-11-21 13:50:05,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:50:05,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:50:05,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:05,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:50:05,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:05,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:50:05,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:05,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 13:50:05,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:06,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 13:50:06,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:06,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-21 13:50:06,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:06,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-21 13:50:06,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:06,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-21 13:50:06,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:06,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 13:50:06,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:06,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-21 13:50:06,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:06,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-21 13:50:06,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:06,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-21 13:50:06,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:06,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-21 13:50:06,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:06,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-21 13:50:06,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:06,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-21 13:50:06,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:06,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-21 13:50:06,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:06,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-21 13:50:06,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:06,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-21 13:50:06,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:06,087 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-21 13:50:06,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:50:06,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285135488] [2022-11-21 13:50:06,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285135488] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:50:06,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435773740] [2022-11-21 13:50:06,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:50:06,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:50:06,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92ebc87-4285-4df7-b906-c45c0c27283d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:50:06,089 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92ebc87-4285-4df7-b906-c45c0c27283d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:50:06,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92ebc87-4285-4df7-b906-c45c0c27283d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 13:50:06,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:06,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 1203 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 13:50:06,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:50:06,464 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-21 13:50:06,464 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:50:06,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435773740] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:50:06,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:50:06,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-11-21 13:50:06,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885551485] [2022-11-21 13:50:06,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:50:06,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:50:06,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:50:06,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:50:06,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-21 13:50:06,473 INFO L87 Difference]: Start difference. First operand 347 states and 511 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-21 13:50:06,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:50:06,552 INFO L93 Difference]: Finished difference Result 724 states and 1081 transitions. [2022-11-21 13:50:06,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:50:06,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 136 [2022-11-21 13:50:06,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:50:06,563 INFO L225 Difference]: With dead ends: 724 [2022-11-21 13:50:06,565 INFO L226 Difference]: Without dead ends: 404 [2022-11-21 13:50:06,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-21 13:50:06,573 INFO L413 NwaCegarLoop]: 527 mSDtfsCounter, 107 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:50:06,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 988 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:50:06,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-11-21 13:50:06,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 396. [2022-11-21 13:50:06,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 306 states have (on average 1.5163398692810457) internal successors, (464), 309 states have internal predecessors, (464), 66 states have call successors, (66), 23 states have call predecessors, (66), 23 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2022-11-21 13:50:06,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 595 transitions. [2022-11-21 13:50:06,624 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 595 transitions. Word has length 136 [2022-11-21 13:50:06,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:50:06,625 INFO L495 AbstractCegarLoop]: Abstraction has 396 states and 595 transitions. [2022-11-21 13:50:06,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-21 13:50:06,625 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 595 transitions. [2022-11-21 13:50:06,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-21 13:50:06,629 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:50:06,629 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:50:06,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92ebc87-4285-4df7-b906-c45c0c27283d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 13:50:06,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92ebc87-4285-4df7-b906-c45c0c27283d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-21 13:50:06,837 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:50:06,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:50:06,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1790455273, now seen corresponding path program 1 times [2022-11-21 13:50:06,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:50:06,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825142713] [2022-11-21 13:50:06,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:50:06,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:50:06,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:07,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:50:07,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:07,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:50:07,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:07,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 13:50:07,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:07,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 13:50:07,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:07,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-21 13:50:07,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:07,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-21 13:50:07,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:07,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-21 13:50:07,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:07,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-21 13:50:07,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:07,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-21 13:50:07,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:07,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-21 13:50:07,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:07,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-21 13:50:07,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:07,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-21 13:50:07,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:07,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-21 13:50:07,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:07,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-21 13:50:07,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:07,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-21 13:50:07,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:07,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-21 13:50:07,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:07,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-21 13:50:07,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:07,169 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-21 13:50:07,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:50:07,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825142713] [2022-11-21 13:50:07,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825142713] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:50:07,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639463953] [2022-11-21 13:50:07,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:50:07,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:50:07,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92ebc87-4285-4df7-b906-c45c0c27283d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:50:07,174 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92ebc87-4285-4df7-b906-c45c0c27283d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:50:07,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92ebc87-4285-4df7-b906-c45c0c27283d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 13:50:07,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:07,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 1210 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 13:50:07,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:50:07,606 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-21 13:50:07,606 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:50:07,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639463953] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:50:07,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:50:07,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-11-21 13:50:07,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338887068] [2022-11-21 13:50:07,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:50:07,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 13:50:07,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:50:07,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 13:50:07,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-21 13:50:07,609 INFO L87 Difference]: Start difference. First operand 396 states and 595 transitions. Second operand has 5 states, 4 states have (on average 22.0) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-21 13:50:07,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:50:07,684 INFO L93 Difference]: Finished difference Result 783 states and 1180 transitions. [2022-11-21 13:50:07,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:50:07,685 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 22.0) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 137 [2022-11-21 13:50:07,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:50:07,688 INFO L225 Difference]: With dead ends: 783 [2022-11-21 13:50:07,688 INFO L226 Difference]: Without dead ends: 398 [2022-11-21 13:50:07,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-21 13:50:07,691 INFO L413 NwaCegarLoop]: 500 mSDtfsCounter, 125 mSDsluCounter, 1355 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1855 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:50:07,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 1855 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:50:07,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2022-11-21 13:50:07,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 398. [2022-11-21 13:50:07,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 307 states have (on average 1.514657980456026) internal successors, (465), 311 states have internal predecessors, (465), 66 states have call successors, (66), 23 states have call predecessors, (66), 24 states have return successors, (67), 65 states have call predecessors, (67), 65 states have call successors, (67) [2022-11-21 13:50:07,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 598 transitions. [2022-11-21 13:50:07,721 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 598 transitions. Word has length 137 [2022-11-21 13:50:07,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:50:07,721 INFO L495 AbstractCegarLoop]: Abstraction has 398 states and 598 transitions. [2022-11-21 13:50:07,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 22.0) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-21 13:50:07,722 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 598 transitions. [2022-11-21 13:50:07,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-21 13:50:07,725 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:50:07,726 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:50:07,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92ebc87-4285-4df7-b906-c45c0c27283d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 13:50:07,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92ebc87-4285-4df7-b906-c45c0c27283d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:50:07,933 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:50:07,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:50:07,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1336008698, now seen corresponding path program 1 times [2022-11-21 13:50:07,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:50:07,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594899760] [2022-11-21 13:50:07,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:50:07,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:50:07,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:08,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:50:08,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:08,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:50:08,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:08,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 13:50:08,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:08,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 13:50:08,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:08,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-21 13:50:08,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:08,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-21 13:50:08,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:08,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-21 13:50:08,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:08,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-21 13:50:08,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:08,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-21 13:50:08,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:08,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-21 13:50:08,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:08,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-21 13:50:08,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:08,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-21 13:50:08,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:08,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-21 13:50:08,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:08,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-21 13:50:08,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:08,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-21 13:50:08,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:08,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-21 13:50:08,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:08,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-21 13:50:08,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:08,266 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-21 13:50:08,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:50:08,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594899760] [2022-11-21 13:50:08,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594899760] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:50:08,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483015117] [2022-11-21 13:50:08,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:50:08,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:50:08,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92ebc87-4285-4df7-b906-c45c0c27283d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:50:08,285 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92ebc87-4285-4df7-b906-c45c0c27283d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:50:08,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92ebc87-4285-4df7-b906-c45c0c27283d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 13:50:08,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:08,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 1211 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 13:50:08,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:50:08,706 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-21 13:50:08,707 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:50:08,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483015117] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:50:08,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:50:08,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-11-21 13:50:08,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378753545] [2022-11-21 13:50:08,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:50:08,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 13:50:08,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:50:08,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 13:50:08,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-11-21 13:50:08,710 INFO L87 Difference]: Start difference. First operand 398 states and 598 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-21 13:50:08,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:50:08,796 INFO L93 Difference]: Finished difference Result 785 states and 1185 transitions. [2022-11-21 13:50:08,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:50:08,797 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 138 [2022-11-21 13:50:08,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:50:08,800 INFO L225 Difference]: With dead ends: 785 [2022-11-21 13:50:08,800 INFO L226 Difference]: Without dead ends: 400 [2022-11-21 13:50:08,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-11-21 13:50:08,803 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 124 mSDsluCounter, 1346 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1844 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:50:08,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1844 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:50:08,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2022-11-21 13:50:08,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 400. [2022-11-21 13:50:08,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 308 states have (on average 1.5129870129870129) internal successors, (466), 313 states have internal predecessors, (466), 66 states have call successors, (66), 23 states have call predecessors, (66), 25 states have return successors, (72), 65 states have call predecessors, (72), 65 states have call successors, (72) [2022-11-21 13:50:08,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 604 transitions. [2022-11-21 13:50:08,833 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 604 transitions. Word has length 138 [2022-11-21 13:50:08,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:50:08,834 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 604 transitions. [2022-11-21 13:50:08,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-21 13:50:08,834 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 604 transitions. [2022-11-21 13:50:08,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-21 13:50:08,839 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:50:08,839 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:50:08,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92ebc87-4285-4df7-b906-c45c0c27283d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-21 13:50:09,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92ebc87-4285-4df7-b906-c45c0c27283d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:50:09,052 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:50:09,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:50:09,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1833577272, now seen corresponding path program 1 times [2022-11-21 13:50:09,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:50:09,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821187840] [2022-11-21 13:50:09,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:50:09,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:50:09,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:09,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:50:09,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:09,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:50:09,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:09,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 13:50:09,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:09,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 13:50:09,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:09,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 13:50:09,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:09,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-21 13:50:09,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:09,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-21 13:50:09,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:09,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-21 13:50:09,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:09,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-21 13:50:09,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:09,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-21 13:50:09,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:09,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-21 13:50:09,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:09,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-21 13:50:09,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:09,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-21 13:50:09,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:09,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-21 13:50:09,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:09,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-21 13:50:09,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:09,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-21 13:50:09,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:09,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-21 13:50:09,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:09,327 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-21 13:50:09,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:50:09,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821187840] [2022-11-21 13:50:09,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821187840] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:50:09,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:50:09,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 13:50:09,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39045809] [2022-11-21 13:50:09,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:50:09,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 13:50:09,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:50:09,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 13:50:09,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-21 13:50:09,330 INFO L87 Difference]: Start difference. First operand 400 states and 604 transitions. Second operand has 9 states, 8 states have (on average 10.75) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-21 13:50:11,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:50:11,799 INFO L93 Difference]: Finished difference Result 897 states and 1356 transitions. [2022-11-21 13:50:11,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 13:50:11,805 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.75) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 139 [2022-11-21 13:50:11,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:50:11,809 INFO L225 Difference]: With dead ends: 897 [2022-11-21 13:50:11,809 INFO L226 Difference]: Without dead ends: 520 [2022-11-21 13:50:11,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-21 13:50:11,812 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 1239 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 2287 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1257 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 2721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 2287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:50:11,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1257 Valid, 987 Invalid, 2721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 2287 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-21 13:50:11,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2022-11-21 13:50:11,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 400. [2022-11-21 13:50:11,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 308 states have (on average 1.5129870129870129) internal successors, (466), 313 states have internal predecessors, (466), 66 states have call successors, (66), 23 states have call predecessors, (66), 25 states have return successors, (71), 65 states have call predecessors, (71), 65 states have call successors, (71) [2022-11-21 13:50:11,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 603 transitions. [2022-11-21 13:50:11,867 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 603 transitions. Word has length 139 [2022-11-21 13:50:11,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:50:11,867 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 603 transitions. [2022-11-21 13:50:11,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.75) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-21 13:50:11,868 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 603 transitions. [2022-11-21 13:50:11,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-21 13:50:11,870 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:50:11,870 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:50:11,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 13:50:11,871 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:50:11,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:50:11,872 INFO L85 PathProgramCache]: Analyzing trace with hash -292483447, now seen corresponding path program 2 times [2022-11-21 13:50:11,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:50:11,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684574580] [2022-11-21 13:50:11,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:50:11,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:50:11,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:12,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:50:12,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:12,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:50:12,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:12,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 13:50:12,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:12,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 13:50:12,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:12,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 13:50:12,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:12,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 13:50:12,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:12,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-21 13:50:12,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:12,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-21 13:50:12,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:12,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-21 13:50:12,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:12,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-21 13:50:12,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:12,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-21 13:50:12,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:12,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-21 13:50:12,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:12,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-21 13:50:12,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:12,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-21 13:50:12,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:12,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-21 13:50:12,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:12,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-21 13:50:12,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:12,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-21 13:50:12,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:12,185 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-21 13:50:12,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:50:12,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684574580] [2022-11-21 13:50:12,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684574580] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:50:12,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:50:12,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 13:50:12,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386048121] [2022-11-21 13:50:12,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:50:12,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 13:50:12,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:50:12,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 13:50:12,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-21 13:50:12,189 INFO L87 Difference]: Start difference. First operand 400 states and 603 transitions. Second operand has 9 states, 8 states have (on average 10.875) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-21 13:50:14,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:50:14,552 INFO L93 Difference]: Finished difference Result 899 states and 1359 transitions. [2022-11-21 13:50:14,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 13:50:14,553 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.875) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 140 [2022-11-21 13:50:14,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:50:14,556 INFO L225 Difference]: With dead ends: 899 [2022-11-21 13:50:14,556 INFO L226 Difference]: Without dead ends: 522 [2022-11-21 13:50:14,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-21 13:50:14,558 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 1235 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 2291 mSolverCounterSat, 425 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1254 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 2716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 425 IncrementalHoareTripleChecker+Valid, 2291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:50:14,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1254 Valid, 986 Invalid, 2716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [425 Valid, 2291 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-21 13:50:14,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2022-11-21 13:50:14,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 402. [2022-11-21 13:50:14,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 309 states have (on average 1.5113268608414239) internal successors, (467), 315 states have internal predecessors, (467), 66 states have call successors, (66), 23 states have call predecessors, (66), 26 states have return successors, (73), 65 states have call predecessors, (73), 65 states have call successors, (73) [2022-11-21 13:50:14,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 606 transitions. [2022-11-21 13:50:14,622 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 606 transitions. Word has length 140 [2022-11-21 13:50:14,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:50:14,623 INFO L495 AbstractCegarLoop]: Abstraction has 402 states and 606 transitions. [2022-11-21 13:50:14,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.875) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-21 13:50:14,623 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 606 transitions. [2022-11-21 13:50:14,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-21 13:50:14,627 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:50:14,627 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:50:14,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 13:50:14,628 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:50:14,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:50:14,628 INFO L85 PathProgramCache]: Analyzing trace with hash 651330031, now seen corresponding path program 1 times [2022-11-21 13:50:14,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:50:14,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191665021] [2022-11-21 13:50:14,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:50:14,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:50:14,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:14,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:50:14,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:14,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:50:14,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:14,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 13:50:14,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:14,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 13:50:14,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:14,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 13:50:14,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:14,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 13:50:14,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:14,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 13:50:14,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:14,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-21 13:50:14,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:14,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-21 13:50:14,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:14,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-21 13:50:14,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:14,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-21 13:50:14,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:14,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-21 13:50:14,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:14,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-21 13:50:14,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:14,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-21 13:50:14,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:14,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-21 13:50:14,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:14,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-21 13:50:14,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:14,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-11-21 13:50:14,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:14,929 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-21 13:50:14,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:50:14,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191665021] [2022-11-21 13:50:14,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191665021] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:50:14,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:50:14,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 13:50:14,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080904355] [2022-11-21 13:50:14,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:50:14,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 13:50:14,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:50:14,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 13:50:14,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-21 13:50:14,932 INFO L87 Difference]: Start difference. First operand 402 states and 606 transitions. Second operand has 9 states, 8 states have (on average 11.0) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-21 13:50:17,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:50:17,174 INFO L93 Difference]: Finished difference Result 899 states and 1358 transitions. [2022-11-21 13:50:17,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 13:50:17,175 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.0) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 141 [2022-11-21 13:50:17,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:50:17,179 INFO L225 Difference]: With dead ends: 899 [2022-11-21 13:50:17,179 INFO L226 Difference]: Without dead ends: 522 [2022-11-21 13:50:17,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2022-11-21 13:50:17,183 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 1235 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 2298 mSolverCounterSat, 427 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1252 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 2725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 427 IncrementalHoareTripleChecker+Valid, 2298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-21 13:50:17,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1252 Valid, 988 Invalid, 2725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [427 Valid, 2298 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-21 13:50:17,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2022-11-21 13:50:17,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 402. [2022-11-21 13:50:17,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 309 states have (on average 1.5113268608414239) internal successors, (467), 315 states have internal predecessors, (467), 66 states have call successors, (66), 23 states have call predecessors, (66), 26 states have return successors, (73), 65 states have call predecessors, (73), 65 states have call successors, (73) [2022-11-21 13:50:17,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 606 transitions. [2022-11-21 13:50:17,229 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 606 transitions. Word has length 141 [2022-11-21 13:50:17,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:50:17,229 INFO L495 AbstractCegarLoop]: Abstraction has 402 states and 606 transitions. [2022-11-21 13:50:17,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.0) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-21 13:50:17,229 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 606 transitions. [2022-11-21 13:50:17,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-21 13:50:17,232 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:50:17,232 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:50:17,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 13:50:17,233 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:50:17,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:50:17,233 INFO L85 PathProgramCache]: Analyzing trace with hash 532888557, now seen corresponding path program 1 times [2022-11-21 13:50:17,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:50:17,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441344405] [2022-11-21 13:50:17,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:50:17,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:50:17,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:17,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:50:17,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:17,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:50:17,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:17,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 13:50:17,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:17,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 13:50:17,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:17,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 13:50:17,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:17,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 13:50:17,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:17,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 13:50:17,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:17,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-21 13:50:17,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:17,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-21 13:50:17,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:17,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-21 13:50:17,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:17,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-21 13:50:17,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:17,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-21 13:50:17,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:17,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-21 13:50:17,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:17,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-21 13:50:17,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:17,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-21 13:50:17,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:17,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-21 13:50:17,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:17,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-11-21 13:50:17,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:17,578 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-21 13:50:17,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:50:17,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441344405] [2022-11-21 13:50:17,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441344405] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:50:17,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:50:17,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-21 13:50:17,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165398464] [2022-11-21 13:50:17,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:50:17,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 13:50:17,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:50:17,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 13:50:17,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-21 13:50:17,581 INFO L87 Difference]: Start difference. First operand 402 states and 606 transitions. Second operand has 12 states, 11 states have (on average 8.272727272727273) internal successors, (91), 8 states have internal predecessors, (91), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2022-11-21 13:50:20,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:50:20,693 INFO L93 Difference]: Finished difference Result 897 states and 1353 transitions. [2022-11-21 13:50:20,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 13:50:20,694 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.272727272727273) internal successors, (91), 8 states have internal predecessors, (91), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 141 [2022-11-21 13:50:20,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:50:20,698 INFO L225 Difference]: With dead ends: 897 [2022-11-21 13:50:20,698 INFO L226 Difference]: Without dead ends: 522 [2022-11-21 13:50:20,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-11-21 13:50:20,700 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 1357 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 3851 mSolverCounterSat, 463 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1357 SdHoareTripleChecker+Valid, 1289 SdHoareTripleChecker+Invalid, 4314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 463 IncrementalHoareTripleChecker+Valid, 3851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-21 13:50:20,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1357 Valid, 1289 Invalid, 4314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [463 Valid, 3851 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-21 13:50:20,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2022-11-21 13:50:20,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 402. [2022-11-21 13:50:20,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 309 states have (on average 1.5113268608414239) internal successors, (467), 315 states have internal predecessors, (467), 66 states have call successors, (66), 23 states have call predecessors, (66), 26 states have return successors, (72), 65 states have call predecessors, (72), 65 states have call successors, (72) [2022-11-21 13:50:20,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 605 transitions. [2022-11-21 13:50:20,745 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 605 transitions. Word has length 141 [2022-11-21 13:50:20,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:50:20,746 INFO L495 AbstractCegarLoop]: Abstraction has 402 states and 605 transitions. [2022-11-21 13:50:20,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.272727272727273) internal successors, (91), 8 states have internal predecessors, (91), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2022-11-21 13:50:20,746 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 605 transitions. [2022-11-21 13:50:20,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-21 13:50:20,749 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:50:20,749 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:50:20,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 13:50:20,749 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:50:20,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:50:20,750 INFO L85 PathProgramCache]: Analyzing trace with hash 551571089, now seen corresponding path program 2 times [2022-11-21 13:50:20,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:50:20,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866843023] [2022-11-21 13:50:20,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:50:20,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:50:20,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:20,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:50:20,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:20,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:50:20,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:20,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 13:50:20,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:20,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 13:50:20,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:20,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 13:50:20,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:20,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 13:50:20,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:20,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-21 13:50:20,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:21,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-21 13:50:21,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:21,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-21 13:50:21,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:21,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-21 13:50:21,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:21,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-21 13:50:21,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:21,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-21 13:50:21,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:21,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-21 13:50:21,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:21,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-21 13:50:21,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:21,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-21 13:50:21,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:21,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-21 13:50:21,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:21,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-11-21 13:50:21,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:21,032 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-21 13:50:21,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:50:21,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866843023] [2022-11-21 13:50:21,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866843023] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:50:21,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:50:21,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-21 13:50:21,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893758075] [2022-11-21 13:50:21,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:50:21,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 13:50:21,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:50:21,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 13:50:21,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-21 13:50:21,035 INFO L87 Difference]: Start difference. First operand 402 states and 605 transitions. Second operand has 12 states, 11 states have (on average 8.363636363636363) internal successors, (92), 8 states have internal predecessors, (92), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2022-11-21 13:50:24,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:50:24,126 INFO L93 Difference]: Finished difference Result 899 states and 1359 transitions. [2022-11-21 13:50:24,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 13:50:24,127 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.363636363636363) internal successors, (92), 8 states have internal predecessors, (92), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 142 [2022-11-21 13:50:24,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:50:24,131 INFO L225 Difference]: With dead ends: 899 [2022-11-21 13:50:24,131 INFO L226 Difference]: Without dead ends: 524 [2022-11-21 13:50:24,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-11-21 13:50:24,133 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 1354 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 3869 mSolverCounterSat, 460 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1354 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 4329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 460 IncrementalHoareTripleChecker+Valid, 3869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-21 13:50:24,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1354 Valid, 1288 Invalid, 4329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [460 Valid, 3869 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-21 13:50:24,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2022-11-21 13:50:24,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 404. [2022-11-21 13:50:24,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 310 states have (on average 1.5096774193548388) internal successors, (468), 317 states have internal predecessors, (468), 66 states have call successors, (66), 23 states have call predecessors, (66), 27 states have return successors, (77), 65 states have call predecessors, (77), 65 states have call successors, (77) [2022-11-21 13:50:24,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 611 transitions. [2022-11-21 13:50:24,178 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 611 transitions. Word has length 142 [2022-11-21 13:50:24,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:50:24,179 INFO L495 AbstractCegarLoop]: Abstraction has 404 states and 611 transitions. [2022-11-21 13:50:24,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.363636363636363) internal successors, (92), 8 states have internal predecessors, (92), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2022-11-21 13:50:24,179 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 611 transitions. [2022-11-21 13:50:24,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-21 13:50:24,182 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:50:24,182 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:50:24,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 13:50:24,183 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:50:24,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:50:24,183 INFO L85 PathProgramCache]: Analyzing trace with hash -586635470, now seen corresponding path program 1 times [2022-11-21 13:50:24,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:50:24,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33050718] [2022-11-21 13:50:24,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:50:24,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:50:24,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:24,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:50:24,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:24,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:50:24,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:24,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 13:50:24,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:24,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 13:50:24,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:24,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 13:50:24,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:24,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 13:50:24,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:24,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-21 13:50:24,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:24,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-21 13:50:24,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:24,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-21 13:50:24,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:24,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-21 13:50:24,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:24,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-21 13:50:24,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:24,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-21 13:50:24,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:24,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-21 13:50:24,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:24,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-21 13:50:24,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:24,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-21 13:50:24,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:24,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-21 13:50:24,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:24,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-21 13:50:24,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:24,499 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-21 13:50:24,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:50:24,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33050718] [2022-11-21 13:50:24,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33050718] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:50:24,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615596113] [2022-11-21 13:50:24,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:50:24,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:50:24,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92ebc87-4285-4df7-b906-c45c0c27283d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:50:24,503 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92ebc87-4285-4df7-b906-c45c0c27283d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:50:24,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92ebc87-4285-4df7-b906-c45c0c27283d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-21 13:50:24,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:24,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 1216 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 13:50:24,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:50:24,934 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-21 13:50:24,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:50:25,044 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-21 13:50:25,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615596113] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:50:25,045 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 13:50:25,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2022-11-21 13:50:25,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783053001] [2022-11-21 13:50:25,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 13:50:25,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-21 13:50:25,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:50:25,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-21 13:50:25,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-11-21 13:50:25,048 INFO L87 Difference]: Start difference. First operand 404 states and 611 transitions. Second operand has 15 states, 14 states have (on average 10.857142857142858) internal successors, (152), 11 states have internal predecessors, (152), 4 states have call successors, (39), 6 states have call predecessors, (39), 3 states have return successors, (32), 3 states have call predecessors, (32), 4 states have call successors, (32) [2022-11-21 13:50:29,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:50:29,764 INFO L93 Difference]: Finished difference Result 1578 states and 2587 transitions. [2022-11-21 13:50:29,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-21 13:50:29,765 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 10.857142857142858) internal successors, (152), 11 states have internal predecessors, (152), 4 states have call successors, (39), 6 states have call predecessors, (39), 3 states have return successors, (32), 3 states have call predecessors, (32), 4 states have call successors, (32) Word has length 143 [2022-11-21 13:50:29,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:50:29,774 INFO L225 Difference]: With dead ends: 1578 [2022-11-21 13:50:29,775 INFO L226 Difference]: Without dead ends: 1205 [2022-11-21 13:50:29,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2022-11-21 13:50:29,779 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 3054 mSDsluCounter, 2685 mSDsCounter, 0 mSdLazyCounter, 5632 mSolverCounterSat, 1124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3056 SdHoareTripleChecker+Valid, 2977 SdHoareTripleChecker+Invalid, 6756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1124 IncrementalHoareTripleChecker+Valid, 5632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:50:29,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3056 Valid, 2977 Invalid, 6756 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1124 Valid, 5632 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-21 13:50:29,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1205 states. [2022-11-21 13:50:29,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1205 to 732. [2022-11-21 13:50:29,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 574 states have (on average 1.5662020905923344) internal successors, (899), 581 states have internal predecessors, (899), 130 states have call successors, (130), 23 states have call predecessors, (130), 27 states have return successors, (151), 129 states have call predecessors, (151), 129 states have call successors, (151) [2022-11-21 13:50:29,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 1180 transitions. [2022-11-21 13:50:29,904 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 1180 transitions. Word has length 143 [2022-11-21 13:50:29,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:50:29,905 INFO L495 AbstractCegarLoop]: Abstraction has 732 states and 1180 transitions. [2022-11-21 13:50:29,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 10.857142857142858) internal successors, (152), 11 states have internal predecessors, (152), 4 states have call successors, (39), 6 states have call predecessors, (39), 3 states have return successors, (32), 3 states have call predecessors, (32), 4 states have call successors, (32) [2022-11-21 13:50:29,905 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 1180 transitions. [2022-11-21 13:50:29,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-21 13:50:29,910 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:50:29,910 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:50:29,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92ebc87-4285-4df7-b906-c45c0c27283d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-21 13:50:30,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92ebc87-4285-4df7-b906-c45c0c27283d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-21 13:50:30,119 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:50:30,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:50:30,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1282197014, now seen corresponding path program 1 times [2022-11-21 13:50:30,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:50:30,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338070734] [2022-11-21 13:50:30,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:50:30,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:50:30,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:30,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:50:30,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:30,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:50:30,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:30,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 13:50:30,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:30,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 13:50:30,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:30,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 13:50:30,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:30,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 13:50:30,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:30,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-21 13:50:30,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:30,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-21 13:50:30,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:30,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-21 13:50:30,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:30,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-21 13:50:30,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:30,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-21 13:50:30,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:30,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-21 13:50:30,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:30,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-21 13:50:30,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:30,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-21 13:50:30,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:30,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-21 13:50:30,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:30,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-21 13:50:30,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:30,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-21 13:50:30,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:30,272 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-21 13:50:30,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:50:30,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338070734] [2022-11-21 13:50:30,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338070734] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:50:30,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:50:30,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:50:30,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603203550] [2022-11-21 13:50:30,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:50:30,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:50:30,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:50:30,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:50:30,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:50:30,274 INFO L87 Difference]: Start difference. First operand 732 states and 1180 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-21 13:50:32,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:50:32,228 INFO L93 Difference]: Finished difference Result 1814 states and 2990 transitions. [2022-11-21 13:50:32,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 13:50:32,229 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 146 [2022-11-21 13:50:32,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:50:32,236 INFO L225 Difference]: With dead ends: 1814 [2022-11-21 13:50:32,236 INFO L226 Difference]: Without dead ends: 1160 [2022-11-21 13:50:32,239 INFO L412 NwaCegarLoop]: 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 [2022-11-21 13:50:32,239 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 1216 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 1371 mSolverCounterSat, 477 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1231 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 1848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 477 IncrementalHoareTripleChecker+Valid, 1371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-21 13:50:32,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1231 Valid, 874 Invalid, 1848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [477 Valid, 1371 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-21 13:50:32,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2022-11-21 13:50:32,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1032. [2022-11-21 13:50:32,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1032 states, 810 states have (on average 1.5851851851851853) internal successors, (1284), 817 states have internal predecessors, (1284), 194 states have call successors, (194), 23 states have call predecessors, (194), 27 states have return successors, (225), 193 states have call predecessors, (225), 193 states have call successors, (225) [2022-11-21 13:50:32,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1703 transitions. [2022-11-21 13:50:32,369 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1703 transitions. Word has length 146 [2022-11-21 13:50:32,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:50:32,370 INFO L495 AbstractCegarLoop]: Abstraction has 1032 states and 1703 transitions. [2022-11-21 13:50:32,370 INFO L496 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-21 13:50:32,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1703 transitions. [2022-11-21 13:50:32,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-21 13:50:32,376 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:50:32,377 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:50:32,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 13:50:32,377 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:50:32,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:50:32,378 INFO L85 PathProgramCache]: Analyzing trace with hash -860530826, now seen corresponding path program 1 times [2022-11-21 13:50:32,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:50:32,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122925764] [2022-11-21 13:50:32,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:50:32,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:50:32,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:32,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:50:32,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:32,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:50:32,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:32,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 13:50:32,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:32,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 13:50:32,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:32,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 13:50:32,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:32,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 13:50:32,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:32,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-21 13:50:32,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:32,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-21 13:50:32,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:32,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-21 13:50:32,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:32,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-21 13:50:32,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:32,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-21 13:50:32,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:32,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-21 13:50:32,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:32,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-21 13:50:32,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:32,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-21 13:50:32,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:32,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-21 13:50:32,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:32,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-11-21 13:50:32,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:32,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-21 13:50:32,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:32,548 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-21 13:50:32,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:50:32,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122925764] [2022-11-21 13:50:32,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122925764] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:50:32,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:50:32,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:50:32,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014418800] [2022-11-21 13:50:32,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:50:32,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:50:32,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:50:32,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:50:32,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:50:32,551 INFO L87 Difference]: Start difference. First operand 1032 states and 1703 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-21 13:50:34,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:50:34,483 INFO L93 Difference]: Finished difference Result 2554 states and 4270 transitions. [2022-11-21 13:50:34,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 13:50:34,484 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 147 [2022-11-21 13:50:34,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:50:34,493 INFO L225 Difference]: With dead ends: 2554 [2022-11-21 13:50:34,493 INFO L226 Difference]: Without dead ends: 1653 [2022-11-21 13:50:34,497 INFO L412 NwaCegarLoop]: 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 [2022-11-21 13:50:34,497 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 1215 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 1344 mSolverCounterSat, 490 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1231 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 1834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 490 IncrementalHoareTripleChecker+Valid, 1344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-21 13:50:34,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1231 Valid, 857 Invalid, 1834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [490 Valid, 1344 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-21 13:50:34,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1653 states. [2022-11-21 13:50:34,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1653 to 1525. [2022-11-21 13:50:34,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1525 states, 1208 states have (on average 1.5943708609271523) internal successors, (1926), 1215 states have internal predecessors, (1926), 289 states have call successors, (289), 23 states have call predecessors, (289), 27 states have return successors, (320), 288 states have call predecessors, (320), 288 states have call successors, (320) [2022-11-21 13:50:34,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 2535 transitions. [2022-11-21 13:50:34,692 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 2535 transitions. Word has length 147 [2022-11-21 13:50:34,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:50:34,693 INFO L495 AbstractCegarLoop]: Abstraction has 1525 states and 2535 transitions. [2022-11-21 13:50:34,693 INFO L496 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-21 13:50:34,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 2535 transitions. [2022-11-21 13:50:34,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-21 13:50:34,703 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:50:34,703 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:50:34,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 13:50:34,703 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:50:34,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:50:34,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1641850148, now seen corresponding path program 1 times [2022-11-21 13:50:34,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:50:34,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330244223] [2022-11-21 13:50:34,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:50:34,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:50:34,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:34,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:50:34,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:34,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:50:34,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:34,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 13:50:34,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:34,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 13:50:34,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:34,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 13:50:34,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:34,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 13:50:34,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:34,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-21 13:50:34,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:34,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-21 13:50:34,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:34,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-21 13:50:34,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:34,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-21 13:50:34,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:34,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-21 13:50:34,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:34,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-21 13:50:34,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:34,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-21 13:50:34,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:34,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-21 13:50:34,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:34,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-21 13:50:34,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:34,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-11-21 13:50:34,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:34,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-11-21 13:50:34,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:34,882 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-21 13:50:34,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:50:34,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330244223] [2022-11-21 13:50:34,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330244223] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:50:34,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:50:34,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:50:34,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009086445] [2022-11-21 13:50:34,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:50:34,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:50:34,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:50:34,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:50:34,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:50:34,886 INFO L87 Difference]: Start difference. First operand 1525 states and 2535 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-21 13:50:36,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:50:36,812 INFO L93 Difference]: Finished difference Result 3656 states and 6188 transitions. [2022-11-21 13:50:36,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 13:50:36,812 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 148 [2022-11-21 13:50:36,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:50:36,827 INFO L225 Difference]: With dead ends: 3656 [2022-11-21 13:50:36,827 INFO L226 Difference]: Without dead ends: 2397 [2022-11-21 13:50:36,832 INFO L412 NwaCegarLoop]: 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 [2022-11-21 13:50:36,833 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 1211 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 1367 mSolverCounterSat, 477 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1226 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 1844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 477 IncrementalHoareTripleChecker+Valid, 1367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-21 13:50:36,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1226 Valid, 822 Invalid, 1844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [477 Valid, 1367 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-21 13:50:36,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2397 states. [2022-11-21 13:50:37,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2397 to 2269. [2022-11-21 13:50:37,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2269 states, 1829 states have (on average 1.6014215418261346) internal successors, (2929), 1836 states have internal predecessors, (2929), 412 states have call successors, (412), 23 states have call predecessors, (412), 27 states have return successors, (459), 411 states have call predecessors, (459), 411 states have call successors, (459) [2022-11-21 13:50:37,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2269 states to 2269 states and 3800 transitions. [2022-11-21 13:50:37,213 INFO L78 Accepts]: Start accepts. Automaton has 2269 states and 3800 transitions. Word has length 148 [2022-11-21 13:50:37,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:50:37,213 INFO L495 AbstractCegarLoop]: Abstraction has 2269 states and 3800 transitions. [2022-11-21 13:50:37,213 INFO L496 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-21 13:50:37,214 INFO L276 IsEmpty]: Start isEmpty. Operand 2269 states and 3800 transitions. [2022-11-21 13:50:37,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-11-21 13:50:37,226 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:50:37,227 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:50:37,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-21 13:50:37,227 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:50:37,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:50:37,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1267394251, now seen corresponding path program 1 times [2022-11-21 13:50:37,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:50:37,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626168394] [2022-11-21 13:50:37,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:50:37,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:50:37,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:37,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:50:37,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:37,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:50:37,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:37,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 13:50:37,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:37,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 13:50:37,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:37,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 13:50:37,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:37,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 13:50:37,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:37,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-21 13:50:37,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:37,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-21 13:50:37,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:37,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-21 13:50:37,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:37,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-21 13:50:37,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:37,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-21 13:50:37,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:37,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-21 13:50:37,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:37,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-21 13:50:37,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:37,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-21 13:50:37,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:37,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-21 13:50:37,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:37,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-21 13:50:37,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:37,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-21 13:50:37,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:37,379 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-21 13:50:37,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:50:37,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626168394] [2022-11-21 13:50:37,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626168394] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:50:37,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:50:37,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:50:37,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760547567] [2022-11-21 13:50:37,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:50:37,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:50:37,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:50:37,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:50:37,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:50:37,382 INFO L87 Difference]: Start difference. First operand 2269 states and 3800 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-21 13:50:39,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:50:39,494 INFO L93 Difference]: Finished difference Result 5365 states and 9168 transitions. [2022-11-21 13:50:39,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 13:50:39,495 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 149 [2022-11-21 13:50:39,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:50:39,513 INFO L225 Difference]: With dead ends: 5365 [2022-11-21 13:50:39,513 INFO L226 Difference]: Without dead ends: 3581 [2022-11-21 13:50:39,520 INFO L412 NwaCegarLoop]: 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 [2022-11-21 13:50:39,521 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 1209 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 1356 mSolverCounterSat, 486 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1224 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 1842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 486 IncrementalHoareTripleChecker+Valid, 1356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-21 13:50:39,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1224 Valid, 821 Invalid, 1842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [486 Valid, 1356 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-21 13:50:39,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3581 states. [2022-11-21 13:50:39,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3581 to 3453. [2022-11-21 13:50:39,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3453 states, 2834 states have (on average 1.6058574453069865) internal successors, (4551), 2841 states have internal predecessors, (4551), 591 states have call successors, (591), 23 states have call predecessors, (591), 27 states have return successors, (664), 590 states have call predecessors, (664), 590 states have call successors, (664) [2022-11-21 13:50:39,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3453 states to 3453 states and 5806 transitions. [2022-11-21 13:50:39,999 INFO L78 Accepts]: Start accepts. Automaton has 3453 states and 5806 transitions. Word has length 149 [2022-11-21 13:50:39,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:50:40,000 INFO L495 AbstractCegarLoop]: Abstraction has 3453 states and 5806 transitions. [2022-11-21 13:50:40,000 INFO L496 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-21 13:50:40,000 INFO L276 IsEmpty]: Start isEmpty. Operand 3453 states and 5806 transitions. [2022-11-21 13:50:40,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-11-21 13:50:40,016 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:50:40,016 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:50:40,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-21 13:50:40,017 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:50:40,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:50:40,017 INFO L85 PathProgramCache]: Analyzing trace with hash 187518816, now seen corresponding path program 1 times [2022-11-21 13:50:40,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:50:40,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809482641] [2022-11-21 13:50:40,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:50:40,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:50:40,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:40,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:50:40,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:40,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:50:40,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:40,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 13:50:40,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:40,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 13:50:40,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:40,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 13:50:40,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:40,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 13:50:40,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:40,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-21 13:50:40,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:40,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-21 13:50:40,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:40,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-21 13:50:40,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:40,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-21 13:50:40,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:40,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-21 13:50:40,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:40,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-21 13:50:40,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:40,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-21 13:50:40,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:40,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-21 13:50:40,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:40,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-21 13:50:40,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:40,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-21 13:50:40,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:40,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-21 13:50:40,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:40,148 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-21 13:50:40,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:50:40,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809482641] [2022-11-21 13:50:40,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809482641] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:50:40,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:50:40,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:50:40,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863647547] [2022-11-21 13:50:40,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:50:40,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:50:40,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:50:40,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:50:40,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:50:40,151 INFO L87 Difference]: Start difference. First operand 3453 states and 5806 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-21 13:50:42,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:50:42,476 INFO L93 Difference]: Finished difference Result 8438 states and 14484 transitions. [2022-11-21 13:50:42,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 13:50:42,476 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 150 [2022-11-21 13:50:42,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:50:42,510 INFO L225 Difference]: With dead ends: 8438 [2022-11-21 13:50:42,510 INFO L226 Difference]: Without dead ends: 5722 [2022-11-21 13:50:42,520 INFO L412 NwaCegarLoop]: 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 [2022-11-21 13:50:42,521 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 1209 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 1370 mSolverCounterSat, 481 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1225 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 1851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 481 IncrementalHoareTripleChecker+Valid, 1370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-21 13:50:42,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1225 Valid, 869 Invalid, 1851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [481 Valid, 1370 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-21 13:50:42,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5722 states. [2022-11-21 13:50:43,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5722 to 5594. [2022-11-21 13:50:43,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5594 states, 4599 states have (on average 1.599695585996956) internal successors, (7357), 4606 states have internal predecessors, (7357), 967 states have call successors, (967), 23 states have call predecessors, (967), 27 states have return successors, (1084), 966 states have call predecessors, (1084), 966 states have call successors, (1084) [2022-11-21 13:50:43,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5594 states to 5594 states and 9408 transitions. [2022-11-21 13:50:43,369 INFO L78 Accepts]: Start accepts. Automaton has 5594 states and 9408 transitions. Word has length 150 [2022-11-21 13:50:43,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:50:43,369 INFO L495 AbstractCegarLoop]: Abstraction has 5594 states and 9408 transitions. [2022-11-21 13:50:43,370 INFO L496 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-21 13:50:43,371 INFO L276 IsEmpty]: Start isEmpty. Operand 5594 states and 9408 transitions. [2022-11-21 13:50:43,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-11-21 13:50:43,395 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:50:43,395 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:50:43,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-21 13:50:43,396 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:50:43,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:50:43,396 INFO L85 PathProgramCache]: Analyzing trace with hash -758318927, now seen corresponding path program 1 times [2022-11-21 13:50:43,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:50:43,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202721485] [2022-11-21 13:50:43,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:50:43,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:50:43,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:43,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:50:43,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:43,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:50:43,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:43,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 13:50:43,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:43,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 13:50:43,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:43,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 13:50:43,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:43,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 13:50:43,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:43,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-21 13:50:43,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:43,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-21 13:50:43,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:43,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-21 13:50:43,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:43,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-21 13:50:43,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:43,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-21 13:50:43,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:43,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-21 13:50:43,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:43,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-21 13:50:43,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:43,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-21 13:50:43,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:43,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-21 13:50:43,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:43,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-21 13:50:43,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:43,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-21 13:50:43,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:43,528 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-21 13:50:43,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:50:43,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202721485] [2022-11-21 13:50:43,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202721485] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:50:43,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:50:43,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:50:43,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315340356] [2022-11-21 13:50:43,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:50:43,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:50:43,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:50:43,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:50:43,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:50:43,531 INFO L87 Difference]: Start difference. First operand 5594 states and 9408 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-21 13:50:46,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:50:46,310 INFO L93 Difference]: Finished difference Result 13860 states and 23785 transitions. [2022-11-21 13:50:46,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 13:50:46,311 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 151 [2022-11-21 13:50:46,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:50:46,353 INFO L225 Difference]: With dead ends: 13860 [2022-11-21 13:50:46,353 INFO L226 Difference]: Without dead ends: 9405 [2022-11-21 13:50:46,367 INFO L412 NwaCegarLoop]: 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 [2022-11-21 13:50:46,367 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 1208 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 1344 mSolverCounterSat, 481 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1224 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 1825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 481 IncrementalHoareTripleChecker+Valid, 1344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-21 13:50:46,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1224 Valid, 846 Invalid, 1825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [481 Valid, 1344 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-21 13:50:46,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9405 states. [2022-11-21 13:50:47,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9405 to 9277. [2022-11-21 13:50:47,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9277 states, 7676 states have (on average 1.5977071391349662) internal successors, (12264), 7683 states have internal predecessors, (12264), 1573 states have call successors, (1573), 23 states have call predecessors, (1573), 27 states have return successors, (1768), 1572 states have call predecessors, (1768), 1572 states have call successors, (1768) [2022-11-21 13:50:47,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9277 states to 9277 states and 15605 transitions. [2022-11-21 13:50:47,538 INFO L78 Accepts]: Start accepts. Automaton has 9277 states and 15605 transitions. Word has length 151 [2022-11-21 13:50:47,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:50:47,539 INFO L495 AbstractCegarLoop]: Abstraction has 9277 states and 15605 transitions. [2022-11-21 13:50:47,539 INFO L496 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-21 13:50:47,539 INFO L276 IsEmpty]: Start isEmpty. Operand 9277 states and 15605 transitions. [2022-11-21 13:50:47,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-21 13:50:47,569 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:50:47,570 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:50:47,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-21 13:50:47,570 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:50:47,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:50:47,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1404498466, now seen corresponding path program 1 times [2022-11-21 13:50:47,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:50:47,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164548709] [2022-11-21 13:50:47,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:50:47,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:50:47,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:47,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:50:47,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:47,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:50:47,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:47,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 13:50:47,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:47,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 13:50:47,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:47,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 13:50:47,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:47,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 13:50:47,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:47,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-21 13:50:47,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:47,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-21 13:50:47,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:47,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-21 13:50:47,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:47,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-21 13:50:47,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:47,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-21 13:50:47,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:47,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-21 13:50:47,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:47,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-21 13:50:47,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:47,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-21 13:50:47,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:47,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-21 13:50:47,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:47,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-21 13:50:47,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:47,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-21 13:50:47,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:47,732 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-21 13:50:47,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:50:47,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164548709] [2022-11-21 13:50:47,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164548709] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:50:47,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:50:47,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:50:47,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404428029] [2022-11-21 13:50:47,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:50:47,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:50:47,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:50:47,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:50:47,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:50:47,735 INFO L87 Difference]: Start difference. First operand 9277 states and 15605 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-21 13:50:51,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:50:51,059 INFO L93 Difference]: Finished difference Result 24044 states and 41226 transitions. [2022-11-21 13:50:51,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 13:50:51,059 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 152 [2022-11-21 13:50:51,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:50:51,126 INFO L225 Difference]: With dead ends: 24044 [2022-11-21 13:50:51,126 INFO L226 Difference]: Without dead ends: 16358 [2022-11-21 13:50:51,153 INFO L412 NwaCegarLoop]: 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 [2022-11-21 13:50:51,154 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 1204 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 1365 mSolverCounterSat, 494 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1219 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 1859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 494 IncrementalHoareTripleChecker+Valid, 1365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-21 13:50:51,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1219 Valid, 852 Invalid, 1859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [494 Valid, 1365 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-21 13:50:51,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16358 states. [2022-11-21 13:50:53,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16358 to 16230. [2022-11-21 13:50:53,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16230 states, 13426 states have (on average 1.5890064054819009) internal successors, (21334), 13433 states have internal predecessors, (21334), 2776 states have call successors, (2776), 23 states have call predecessors, (2776), 27 states have return successors, (3115), 2775 states have call predecessors, (3115), 2775 states have call successors, (3115) [2022-11-21 13:50:53,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16230 states to 16230 states and 27225 transitions. [2022-11-21 13:50:53,519 INFO L78 Accepts]: Start accepts. Automaton has 16230 states and 27225 transitions. Word has length 152 [2022-11-21 13:50:53,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:50:53,520 INFO L495 AbstractCegarLoop]: Abstraction has 16230 states and 27225 transitions. [2022-11-21 13:50:53,520 INFO L496 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-21 13:50:53,520 INFO L276 IsEmpty]: Start isEmpty. Operand 16230 states and 27225 transitions. [2022-11-21 13:50:53,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-11-21 13:50:53,561 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:50:53,561 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:50:53,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-21 13:50:53,562 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:50:53,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:50:53,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1896303312, now seen corresponding path program 1 times [2022-11-21 13:50:53,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:50:53,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851985578] [2022-11-21 13:50:53,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:50:53,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:50:53,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:53,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:50:53,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:53,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:50:53,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:53,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 13:50:53,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:53,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 13:50:53,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:53,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 13:50:53,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:53,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 13:50:53,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:53,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-21 13:50:53,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:53,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-21 13:50:53,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:53,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-21 13:50:53,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:53,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-21 13:50:53,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:53,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-21 13:50:53,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:53,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-21 13:50:53,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:53,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-21 13:50:53,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:53,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-21 13:50:53,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:53,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-11-21 13:50:53,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:53,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-21 13:50:53,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:53,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-21 13:50:53,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:53,696 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-21 13:50:53,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:50:53,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851985578] [2022-11-21 13:50:53,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851985578] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:50:53,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:50:53,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:50:53,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510057863] [2022-11-21 13:50:53,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:50:53,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:50:53,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:50:53,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:50:53,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:50:53,700 INFO L87 Difference]: Start difference. First operand 16230 states and 27225 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-21 13:50:58,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:50:58,303 INFO L93 Difference]: Finished difference Result 43010 states and 73623 transitions. [2022-11-21 13:50:58,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 13:50:58,304 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 153 [2022-11-21 13:50:58,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:50:58,459 INFO L225 Difference]: With dead ends: 43010 [2022-11-21 13:50:58,459 INFO L226 Difference]: Without dead ends: 29013 [2022-11-21 13:50:58,504 INFO L412 NwaCegarLoop]: 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 [2022-11-21 13:50:58,505 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 1204 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 1349 mSolverCounterSat, 485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1220 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 1834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 485 IncrementalHoareTripleChecker+Valid, 1349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-21 13:50:58,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1220 Valid, 820 Invalid, 1834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [485 Valid, 1349 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-21 13:50:58,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29013 states. [2022-11-21 13:51:02,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29013 to 28885. [2022-11-21 13:51:02,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28885 states, 24042 states have (on average 1.5847683221029865) internal successors, (38101), 24049 states have internal predecessors, (38101), 4815 states have call successors, (4815), 23 states have call predecessors, (4815), 27 states have return successors, (5428), 4814 states have call predecessors, (5428), 4814 states have call successors, (5428) [2022-11-21 13:51:02,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28885 states to 28885 states and 48344 transitions. [2022-11-21 13:51:02,217 INFO L78 Accepts]: Start accepts. Automaton has 28885 states and 48344 transitions. Word has length 153 [2022-11-21 13:51:02,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:51:02,217 INFO L495 AbstractCegarLoop]: Abstraction has 28885 states and 48344 transitions. [2022-11-21 13:51:02,217 INFO L496 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-21 13:51:02,218 INFO L276 IsEmpty]: Start isEmpty. Operand 28885 states and 48344 transitions. [2022-11-21 13:51:02,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-21 13:51:02,277 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:51:02,278 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:51:02,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-21 13:51:02,278 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:51:02,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:51:02,279 INFO L85 PathProgramCache]: Analyzing trace with hash 2012004348, now seen corresponding path program 1 times [2022-11-21 13:51:02,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:51:02,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39723679] [2022-11-21 13:51:02,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:51:02,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:51:02,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:02,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:51:02,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:02,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:51:02,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:02,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 13:51:02,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:02,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 13:51:02,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:02,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 13:51:02,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:02,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 13:51:02,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:02,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-21 13:51:02,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:02,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-21 13:51:02,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:02,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-21 13:51:02,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:02,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-21 13:51:02,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:02,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-21 13:51:02,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:02,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-21 13:51:02,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:02,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-21 13:51:02,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:02,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-21 13:51:02,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:02,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-11-21 13:51:02,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:02,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-11-21 13:51:02,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:02,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-11-21 13:51:02,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:02,596 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-21 13:51:02,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:51:02,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39723679] [2022-11-21 13:51:02,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39723679] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:51:02,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:51:02,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:51:02,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174399434] [2022-11-21 13:51:02,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:51:02,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:51:02,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:51:02,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:51:02,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:51:02,599 INFO L87 Difference]: Start difference. First operand 28885 states and 48344 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-21 13:51:09,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:51:09,157 INFO L93 Difference]: Finished difference Result 78772 states and 133987 transitions. [2022-11-21 13:51:09,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 13:51:09,157 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 154 [2022-11-21 13:51:09,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:51:09,333 INFO L225 Difference]: With dead ends: 78772 [2022-11-21 13:51:09,333 INFO L226 Difference]: Without dead ends: 52892 [2022-11-21 13:51:09,393 INFO L412 NwaCegarLoop]: 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 [2022-11-21 13:51:09,393 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 1199 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 1361 mSolverCounterSat, 494 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1214 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 1855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 494 IncrementalHoareTripleChecker+Valid, 1361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-21 13:51:09,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1214 Valid, 828 Invalid, 1855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [494 Valid, 1361 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-21 13:51:09,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52892 states. [2022-11-21 13:51:15,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52892 to 52764. [2022-11-21 13:51:15,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52764 states, 44206 states have (on average 1.5790616658372167) internal successors, (69804), 44213 states have internal predecessors, (69804), 8530 states have call successors, (8530), 23 states have call predecessors, (8530), 27 states have return successors, (9675), 8529 states have call predecessors, (9675), 8529 states have call successors, (9675) [2022-11-21 13:51:15,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52764 states to 52764 states and 88009 transitions. [2022-11-21 13:51:15,570 INFO L78 Accepts]: Start accepts. Automaton has 52764 states and 88009 transitions. Word has length 154 [2022-11-21 13:51:15,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:51:15,571 INFO L495 AbstractCegarLoop]: Abstraction has 52764 states and 88009 transitions. [2022-11-21 13:51:15,572 INFO L496 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-21 13:51:15,572 INFO L276 IsEmpty]: Start isEmpty. Operand 52764 states and 88009 transitions. [2022-11-21 13:51:15,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-21 13:51:15,654 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:51:15,654 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:51:15,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-21 13:51:15,654 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:51:15,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:51:15,655 INFO L85 PathProgramCache]: Analyzing trace with hash 897281520, now seen corresponding path program 1 times [2022-11-21 13:51:15,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:51:15,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455612104] [2022-11-21 13:51:15,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:51:15,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:51:15,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:15,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:51:15,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:15,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:51:15,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:15,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 13:51:15,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:15,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 13:51:15,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:15,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 13:51:15,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:15,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 13:51:15,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:15,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-21 13:51:15,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:15,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-21 13:51:15,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:15,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-21 13:51:15,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:15,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-21 13:51:15,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:15,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-21 13:51:15,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:15,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-21 13:51:15,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:15,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-21 13:51:15,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:15,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-21 13:51:15,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:15,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-21 13:51:15,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:15,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-21 13:51:15,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:15,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-21 13:51:15,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:15,791 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-21 13:51:15,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:51:15,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455612104] [2022-11-21 13:51:15,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455612104] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:51:15,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:51:15,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:51:15,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286787271] [2022-11-21 13:51:15,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:51:15,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:51:15,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:51:15,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:51:15,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:51:15,794 INFO L87 Difference]: Start difference. First operand 52764 states and 88009 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17)