./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_592896a7-eedb-4110-ae25-7ab0807b35c2/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_592896a7-eedb-4110-ae25-7ab0807b35c2/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_592896a7-eedb-4110-ae25-7ab0807b35c2/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_592896a7-eedb-4110-ae25-7ab0807b35c2/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_592896a7-eedb-4110-ae25-7ab0807b35c2/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_592896a7-eedb-4110-ae25-7ab0807b35c2/bin/uautomizer-ug76WZFUDN --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 a61ec0d9e8ff01aa8900ac2d4a87b40f68db963fb1a53c6fbb2c11c91e3dd345 --- 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-6b4ec56 [2022-11-20 09:27:07,623 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 09:27:07,626 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 09:27:07,671 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 09:27:07,672 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 09:27:07,676 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 09:27:07,678 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 09:27:07,681 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 09:27:07,683 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 09:27:07,689 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 09:27:07,691 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 09:27:07,693 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 09:27:07,694 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 09:27:07,696 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 09:27:07,698 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 09:27:07,700 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 09:27:07,702 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 09:27:07,703 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 09:27:07,705 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 09:27:07,711 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 09:27:07,713 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 09:27:07,715 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 09:27:07,716 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 09:27:07,718 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 09:27:07,728 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 09:27:07,729 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 09:27:07,729 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 09:27:07,732 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 09:27:07,732 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 09:27:07,734 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 09:27:07,734 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 09:27:07,735 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 09:27:07,737 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 09:27:07,738 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 09:27:07,740 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 09:27:07,740 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 09:27:07,741 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 09:27:07,741 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 09:27:07,741 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 09:27:07,742 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 09:27:07,743 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 09:27:07,744 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_592896a7-eedb-4110-ae25-7ab0807b35c2/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 09:27:07,790 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 09:27:07,790 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 09:27:07,791 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 09:27:07,791 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 09:27:07,792 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 09:27:07,792 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 09:27:07,793 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 09:27:07,793 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 09:27:07,793 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 09:27:07,794 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 09:27:07,795 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 09:27:07,795 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 09:27:07,795 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 09:27:07,795 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 09:27:07,796 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 09:27:07,796 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 09:27:07,796 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 09:27:07,796 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 09:27:07,796 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 09:27:07,797 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 09:27:07,797 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 09:27:07,797 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 09:27:07,797 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 09:27:07,797 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 09:27:07,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:27:07,798 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 09:27:07,798 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 09:27:07,798 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 09:27:07,799 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 09:27:07,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 09:27:07,799 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 09:27:07,800 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 09:27:07,800 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 09:27:07,800 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_592896a7-eedb-4110-ae25-7ab0807b35c2/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_592896a7-eedb-4110-ae25-7ab0807b35c2/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a61ec0d9e8ff01aa8900ac2d4a87b40f68db963fb1a53c6fbb2c11c91e3dd345 [2022-11-20 09:27:08,106 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 09:27:08,147 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 09:27:08,150 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 09:27:08,151 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 09:27:08,152 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 09:27:08,153 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_592896a7-eedb-4110-ae25-7ab0807b35c2/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.c [2022-11-20 09:27:11,273 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 09:27:11,476 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 09:27:11,477 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_592896a7-eedb-4110-ae25-7ab0807b35c2/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.c [2022-11-20 09:27:11,488 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_592896a7-eedb-4110-ae25-7ab0807b35c2/bin/uautomizer-ug76WZFUDN/data/7f76de4da/f4a9d908456941e8bb19b7e4631a7fca/FLAGe3ef14b74 [2022-11-20 09:27:11,502 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_592896a7-eedb-4110-ae25-7ab0807b35c2/bin/uautomizer-ug76WZFUDN/data/7f76de4da/f4a9d908456941e8bb19b7e4631a7fca [2022-11-20 09:27:11,505 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 09:27:11,506 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 09:27:11,508 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 09:27:11,508 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 09:27:11,515 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 09:27:11,516 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:27:11" (1/1) ... [2022-11-20 09:27:11,517 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73189b09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:11, skipping insertion in model container [2022-11-20 09:27:11,517 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:27:11" (1/1) ... [2022-11-20 09:27:11,524 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 09:27:11,581 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:27:11,711 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_592896a7-eedb-4110-ae25-7ab0807b35c2/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.c[914,927] [2022-11-20 09:27:11,774 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_592896a7-eedb-4110-ae25-7ab0807b35c2/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.c[7115,7128] [2022-11-20 09:27:11,831 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:27:11,843 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 09:27:11,854 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_592896a7-eedb-4110-ae25-7ab0807b35c2/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.c[914,927] [2022-11-20 09:27:11,876 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_592896a7-eedb-4110-ae25-7ab0807b35c2/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.c[7115,7128] [2022-11-20 09:27:11,923 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:27:11,943 INFO L208 MainTranslator]: Completed translation [2022-11-20 09:27:11,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:11 WrapperNode [2022-11-20 09:27:11,944 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 09:27:11,945 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 09:27:11,945 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 09:27:11,945 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 09:27:11,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:11" (1/1) ... [2022-11-20 09:27:11,965 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:11" (1/1) ... [2022-11-20 09:27:12,008 INFO L138 Inliner]: procedures = 61, calls = 70, calls flagged for inlining = 29, calls inlined = 29, statements flattened = 581 [2022-11-20 09:27:12,009 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 09:27:12,009 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 09:27:12,009 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 09:27:12,010 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 09:27:12,020 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:11" (1/1) ... [2022-11-20 09:27:12,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:11" (1/1) ... [2022-11-20 09:27:12,024 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:11" (1/1) ... [2022-11-20 09:27:12,024 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:11" (1/1) ... [2022-11-20 09:27:12,035 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:11" (1/1) ... [2022-11-20 09:27:12,046 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:11" (1/1) ... [2022-11-20 09:27:12,049 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:11" (1/1) ... [2022-11-20 09:27:12,051 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:11" (1/1) ... [2022-11-20 09:27:12,056 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 09:27:12,057 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 09:27:12,057 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 09:27:12,057 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 09:27:12,058 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:11" (1/1) ... [2022-11-20 09:27:12,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:27:12,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_592896a7-eedb-4110-ae25-7ab0807b35c2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:12,095 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_592896a7-eedb-4110-ae25-7ab0807b35c2/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:12,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_592896a7-eedb-4110-ae25-7ab0807b35c2/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 09:27:12,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 09:27:12,150 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-20 09:27:12,150 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-20 09:27:12,151 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-11-20 09:27:12,151 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-11-20 09:27:12,151 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-11-20 09:27:12,151 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-11-20 09:27:12,151 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-11-20 09:27:12,151 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-11-20 09:27:12,152 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-11-20 09:27:12,152 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-11-20 09:27:12,152 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-11-20 09:27:12,152 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-11-20 09:27:12,152 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-11-20 09:27:12,152 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-11-20 09:27:12,152 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-11-20 09:27:12,153 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-11-20 09:27:12,153 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-11-20 09:27:12,153 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-11-20 09:27:12,153 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-11-20 09:27:12,153 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-11-20 09:27:12,153 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-11-20 09:27:12,153 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-11-20 09:27:12,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 09:27:12,154 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-11-20 09:27:12,154 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-11-20 09:27:12,154 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-11-20 09:27:12,154 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-11-20 09:27:12,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 09:27:12,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 09:27:12,155 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-11-20 09:27:12,155 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-11-20 09:27:12,155 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2022-11-20 09:27:12,155 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2022-11-20 09:27:12,266 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 09:27:12,268 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 09:27:13,151 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 09:27:13,162 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 09:27:13,162 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-11-20 09:27:13,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:27:13 BoogieIcfgContainer [2022-11-20 09:27:13,165 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 09:27:13,167 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 09:27:13,167 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 09:27:13,170 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 09:27:13,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:27:11" (1/3) ... [2022-11-20 09:27:13,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40f52be7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:27:13, skipping insertion in model container [2022-11-20 09:27:13,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:11" (2/3) ... [2022-11-20 09:27:13,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40f52be7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:27:13, skipping insertion in model container [2022-11-20 09:27:13,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:27:13" (3/3) ... [2022-11-20 09:27:13,174 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.04.cil-2.c [2022-11-20 09:27:13,195 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 09:27:13,195 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-20 09:27:13,256 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 09:27:13,263 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;@166ea183, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 09:27:13,263 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-20 09:27:13,269 INFO L276 IsEmpty]: Start isEmpty. Operand has 291 states, 239 states have (on average 1.594142259414226) internal successors, (381), 247 states have internal predecessors, (381), 34 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (34), 32 states have call predecessors, (34), 34 states have call successors, (34) [2022-11-20 09:27:13,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-20 09:27:13,281 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:13,282 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:13,283 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:13,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:13,288 INFO L85 PathProgramCache]: Analyzing trace with hash -496845882, now seen corresponding path program 1 times [2022-11-20 09:27:13,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:13,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219111631] [2022-11-20 09:27:13,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:13,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:13,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:13,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 09:27:13,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:13,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:27:13,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:13,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 09:27:13,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:13,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:27:13,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:13,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 09:27:13,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:13,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 09:27:13,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:13,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-20 09:27:14,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:14,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:14,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:14,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219111631] [2022-11-20 09:27:14,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219111631] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:14,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:14,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 09:27:14,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240596304] [2022-11-20 09:27:14,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:14,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 09:27:14,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:14,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 09:27:14,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:27:14,067 INFO L87 Difference]: Start difference. First operand has 291 states, 239 states have (on average 1.594142259414226) internal successors, (381), 247 states have internal predecessors, (381), 34 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (34), 32 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-20 09:27:15,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:15,861 INFO L93 Difference]: Finished difference Result 727 states and 1118 transitions. [2022-11-20 09:27:15,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 09:27:15,864 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-11-20 09:27:15,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:15,878 INFO L225 Difference]: With dead ends: 727 [2022-11-20 09:27:15,878 INFO L226 Difference]: Without dead ends: 446 [2022-11-20 09:27:15,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-11-20 09:27:15,887 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 812 mSDsluCounter, 1267 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 1573 SdHoareTripleChecker+Invalid, 1349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:15,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [834 Valid, 1573 Invalid, 1349 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [126 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-20 09:27:15,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2022-11-20 09:27:15,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 380. [2022-11-20 09:27:15,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 310 states have (on average 1.4806451612903226) internal successors, (459), 318 states have internal predecessors, (459), 45 states have call successors, (45), 22 states have call predecessors, (45), 23 states have return successors, (52), 42 states have call predecessors, (52), 41 states have call successors, (52) [2022-11-20 09:27:16,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 556 transitions. [2022-11-20 09:27:16,004 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 556 transitions. Word has length 65 [2022-11-20 09:27:16,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:16,005 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 556 transitions. [2022-11-20 09:27:16,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-20 09:27:16,005 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 556 transitions. [2022-11-20 09:27:16,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-20 09:27:16,009 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:16,009 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:16,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 09:27:16,009 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:16,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:16,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1769535304, now seen corresponding path program 1 times [2022-11-20 09:27:16,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:16,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254188566] [2022-11-20 09:27:16,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:16,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:16,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:16,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 09:27:16,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:16,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:27:16,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:16,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 09:27:16,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:16,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:27:16,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:16,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 09:27:16,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:16,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 09:27:16,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:16,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-20 09:27:16,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:16,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:16,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:16,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254188566] [2022-11-20 09:27:16,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254188566] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:16,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:16,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 09:27:16,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116736690] [2022-11-20 09:27:16,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:16,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 09:27:16,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:16,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 09:27:16,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:27:16,285 INFO L87 Difference]: Start difference. First operand 380 states and 556 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 09:27:17,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:17,490 INFO L93 Difference]: Finished difference Result 591 states and 851 transitions. [2022-11-20 09:27:17,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 09:27:17,492 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-11-20 09:27:17,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:17,496 INFO L225 Difference]: With dead ends: 591 [2022-11-20 09:27:17,496 INFO L226 Difference]: Without dead ends: 410 [2022-11-20 09:27:17,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 09:27:17,498 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 332 mSDsluCounter, 1414 mSDsCounter, 0 mSdLazyCounter, 1187 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 1665 SdHoareTripleChecker+Invalid, 1265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:17,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 1665 Invalid, 1265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1187 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 09:27:17,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2022-11-20 09:27:17,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 390. [2022-11-20 09:27:17,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 318 states have (on average 1.4685534591194969) internal successors, (467), 326 states have internal predecessors, (467), 45 states have call successors, (45), 22 states have call predecessors, (45), 25 states have return successors, (54), 44 states have call predecessors, (54), 41 states have call successors, (54) [2022-11-20 09:27:17,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 566 transitions. [2022-11-20 09:27:17,549 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 566 transitions. Word has length 65 [2022-11-20 09:27:17,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:17,550 INFO L495 AbstractCegarLoop]: Abstraction has 390 states and 566 transitions. [2022-11-20 09:27:17,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 09:27:17,550 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 566 transitions. [2022-11-20 09:27:17,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-20 09:27:17,553 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:17,553 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:17,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 09:27:17,554 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:17,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:17,555 INFO L85 PathProgramCache]: Analyzing trace with hash 740176006, now seen corresponding path program 1 times [2022-11-20 09:27:17,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:17,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56226311] [2022-11-20 09:27:17,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:17,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:17,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:17,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 09:27:17,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:17,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:27:17,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:17,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 09:27:17,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:17,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:27:17,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:17,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 09:27:17,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:17,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 09:27:17,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:17,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-20 09:27:17,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:17,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:17,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:17,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56226311] [2022-11-20 09:27:17,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56226311] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:17,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:17,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 09:27:17,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339158327] [2022-11-20 09:27:17,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:17,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 09:27:17,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:17,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 09:27:17,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:27:17,767 INFO L87 Difference]: Start difference. First operand 390 states and 566 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 09:27:18,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:18,906 INFO L93 Difference]: Finished difference Result 615 states and 879 transitions. [2022-11-20 09:27:18,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 09:27:18,908 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-11-20 09:27:18,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:18,911 INFO L225 Difference]: With dead ends: 615 [2022-11-20 09:27:18,911 INFO L226 Difference]: Without dead ends: 424 [2022-11-20 09:27:18,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-11-20 09:27:18,913 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 330 mSDsluCounter, 1414 mSDsCounter, 0 mSdLazyCounter, 1185 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 1665 SdHoareTripleChecker+Invalid, 1262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:18,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 1665 Invalid, 1262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1185 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 09:27:18,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2022-11-20 09:27:18,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 400. [2022-11-20 09:27:18,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 326 states have (on average 1.4570552147239264) internal successors, (475), 334 states have internal predecessors, (475), 45 states have call successors, (45), 22 states have call predecessors, (45), 27 states have return successors, (56), 46 states have call predecessors, (56), 41 states have call successors, (56) [2022-11-20 09:27:18,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 576 transitions. [2022-11-20 09:27:18,963 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 576 transitions. Word has length 65 [2022-11-20 09:27:18,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:18,966 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 576 transitions. [2022-11-20 09:27:18,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 09:27:18,967 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 576 transitions. [2022-11-20 09:27:18,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-20 09:27:18,975 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:18,976 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:18,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 09:27:18,976 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:18,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:18,977 INFO L85 PathProgramCache]: Analyzing trace with hash 2126379400, now seen corresponding path program 1 times [2022-11-20 09:27:18,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:18,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094711669] [2022-11-20 09:27:18,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:18,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:19,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:19,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 09:27:19,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:19,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:27:19,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:19,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 09:27:19,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:19,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:27:19,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:19,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 09:27:19,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:19,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 09:27:19,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:19,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-20 09:27:19,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:19,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:19,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:19,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094711669] [2022-11-20 09:27:19,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094711669] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:19,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:19,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 09:27:19,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609767711] [2022-11-20 09:27:19,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:19,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 09:27:19,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:19,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 09:27:19,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:27:19,240 INFO L87 Difference]: Start difference. First operand 400 states and 576 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-20 09:27:20,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:20,331 INFO L93 Difference]: Finished difference Result 748 states and 1057 transitions. [2022-11-20 09:27:20,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 09:27:20,332 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-11-20 09:27:20,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:20,335 INFO L225 Difference]: With dead ends: 748 [2022-11-20 09:27:20,335 INFO L226 Difference]: Without dead ends: 546 [2022-11-20 09:27:20,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-20 09:27:20,350 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 554 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 935 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 557 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:20,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [557 Valid, 1197 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 935 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 09:27:20,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2022-11-20 09:27:20,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 492. [2022-11-20 09:27:20,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 399 states have (on average 1.4285714285714286) internal successors, (570), 408 states have internal predecessors, (570), 56 states have call successors, (56), 29 states have call predecessors, (56), 35 states have return successors, (69), 58 states have call predecessors, (69), 52 states have call successors, (69) [2022-11-20 09:27:20,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 695 transitions. [2022-11-20 09:27:20,402 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 695 transitions. Word has length 65 [2022-11-20 09:27:20,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:20,402 INFO L495 AbstractCegarLoop]: Abstraction has 492 states and 695 transitions. [2022-11-20 09:27:20,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-20 09:27:20,403 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 695 transitions. [2022-11-20 09:27:20,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-20 09:27:20,404 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:20,404 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:20,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 09:27:20,405 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:20,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:20,405 INFO L85 PathProgramCache]: Analyzing trace with hash -2028039286, now seen corresponding path program 1 times [2022-11-20 09:27:20,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:20,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899399870] [2022-11-20 09:27:20,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:20,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:20,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:20,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 09:27:20,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:20,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:27:20,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:20,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 09:27:20,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:20,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:27:20,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:20,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 09:27:20,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:20,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 09:27:20,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:20,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-20 09:27:20,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:20,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:20,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:20,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899399870] [2022-11-20 09:27:20,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899399870] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:20,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:20,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 09:27:20,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790954183] [2022-11-20 09:27:20,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:20,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 09:27:20,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:20,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 09:27:20,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:27:20,610 INFO L87 Difference]: Start difference. First operand 492 states and 695 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-20 09:27:21,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:21,770 INFO L93 Difference]: Finished difference Result 884 states and 1206 transitions. [2022-11-20 09:27:21,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 09:27:21,771 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-11-20 09:27:21,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:21,774 INFO L225 Difference]: With dead ends: 884 [2022-11-20 09:27:21,775 INFO L226 Difference]: Without dead ends: 599 [2022-11-20 09:27:21,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2022-11-20 09:27:21,777 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 992 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 1047 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1014 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 1224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 1047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:21,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1014 Valid, 1077 Invalid, 1224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 1047 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 09:27:21,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2022-11-20 09:27:21,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 504. [2022-11-20 09:27:21,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 409 states have (on average 1.4180929095354524) internal successors, (580), 418 states have internal predecessors, (580), 57 states have call successors, (57), 30 states have call predecessors, (57), 36 states have return successors, (68), 59 states have call predecessors, (68), 53 states have call successors, (68) [2022-11-20 09:27:21,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 705 transitions. [2022-11-20 09:27:21,830 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 705 transitions. Word has length 65 [2022-11-20 09:27:21,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:21,831 INFO L495 AbstractCegarLoop]: Abstraction has 504 states and 705 transitions. [2022-11-20 09:27:21,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-20 09:27:21,831 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 705 transitions. [2022-11-20 09:27:21,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-20 09:27:21,833 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:21,833 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:21,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 09:27:21,834 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:21,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:21,834 INFO L85 PathProgramCache]: Analyzing trace with hash 2132914504, now seen corresponding path program 1 times [2022-11-20 09:27:21,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:21,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067279360] [2022-11-20 09:27:21,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:21,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:21,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:21,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 09:27:21,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:21,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:27:21,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:21,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 09:27:21,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:21,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:27:21,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:21,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 09:27:21,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:21,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 09:27:21,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:21,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-20 09:27:21,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:21,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:21,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:21,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067279360] [2022-11-20 09:27:21,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067279360] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:21,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:21,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 09:27:21,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174419559] [2022-11-20 09:27:21,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:21,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:27:21,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:21,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:27:21,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:27:21,963 INFO L87 Difference]: Start difference. First operand 504 states and 705 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-20 09:27:22,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:22,728 INFO L93 Difference]: Finished difference Result 1146 states and 1552 transitions. [2022-11-20 09:27:22,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 09:27:22,729 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-11-20 09:27:22,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:22,735 INFO L225 Difference]: With dead ends: 1146 [2022-11-20 09:27:22,735 INFO L226 Difference]: Without dead ends: 850 [2022-11-20 09:27:22,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-11-20 09:27:22,738 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 987 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1012 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:22,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1012 Valid, 841 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 09:27:22,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2022-11-20 09:27:22,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 794. [2022-11-20 09:27:22,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 633 states have (on average 1.3696682464454977) internal successors, (867), 649 states have internal predecessors, (867), 92 states have call successors, (92), 52 states have call predecessors, (92), 67 states have return successors, (125), 99 states have call predecessors, (125), 88 states have call successors, (125) [2022-11-20 09:27:22,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1084 transitions. [2022-11-20 09:27:22,804 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1084 transitions. Word has length 65 [2022-11-20 09:27:22,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:22,805 INFO L495 AbstractCegarLoop]: Abstraction has 794 states and 1084 transitions. [2022-11-20 09:27:22,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-20 09:27:22,805 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1084 transitions. [2022-11-20 09:27:22,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-20 09:27:22,808 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:22,808 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:22,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 09:27:22,808 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:22,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:22,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1916035770, now seen corresponding path program 1 times [2022-11-20 09:27:22,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:22,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966431574] [2022-11-20 09:27:22,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:22,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:22,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:22,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 09:27:22,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:22,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:27:22,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:22,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 09:27:22,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:22,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:27:22,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:22,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 09:27:22,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:22,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 09:27:22,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:22,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-20 09:27:22,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:22,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:22,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:22,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966431574] [2022-11-20 09:27:22,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966431574] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:22,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:22,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 09:27:22,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626669905] [2022-11-20 09:27:22,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:22,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:27:22,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:22,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:27:22,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:27:22,892 INFO L87 Difference]: Start difference. First operand 794 states and 1084 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 09:27:23,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:23,633 INFO L93 Difference]: Finished difference Result 1997 states and 2655 transitions. [2022-11-20 09:27:23,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 09:27:23,634 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-11-20 09:27:23,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:23,641 INFO L225 Difference]: With dead ends: 1997 [2022-11-20 09:27:23,641 INFO L226 Difference]: Without dead ends: 1390 [2022-11-20 09:27:23,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-20 09:27:23,644 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 726 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:23,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 800 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 09:27:23,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1390 states. [2022-11-20 09:27:23,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1390 to 1275. [2022-11-20 09:27:23,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1275 states, 1012 states have (on average 1.33201581027668) internal successors, (1348), 1031 states have internal predecessors, (1348), 137 states have call successors, (137), 96 states have call predecessors, (137), 124 states have return successors, (197), 154 states have call predecessors, (197), 133 states have call successors, (197) [2022-11-20 09:27:23,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 1682 transitions. [2022-11-20 09:27:23,733 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 1682 transitions. Word has length 66 [2022-11-20 09:27:23,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:23,734 INFO L495 AbstractCegarLoop]: Abstraction has 1275 states and 1682 transitions. [2022-11-20 09:27:23,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 09:27:23,734 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 1682 transitions. [2022-11-20 09:27:23,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-20 09:27:23,737 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:23,737 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:23,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 09:27:23,737 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:23,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:23,738 INFO L85 PathProgramCache]: Analyzing trace with hash -457796111, now seen corresponding path program 1 times [2022-11-20 09:27:23,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:23,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368670327] [2022-11-20 09:27:23,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:23,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:23,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:23,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 09:27:23,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:23,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:27:23,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:23,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 09:27:23,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:23,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:27:23,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:23,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 09:27:23,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:23,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 09:27:23,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:23,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-20 09:27:23,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:23,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:23,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:23,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368670327] [2022-11-20 09:27:23,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368670327] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:23,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:23,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 09:27:23,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280525249] [2022-11-20 09:27:23,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:23,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:27:23,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:23,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:27:23,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:27:23,816 INFO L87 Difference]: Start difference. First operand 1275 states and 1682 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 09:27:24,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:24,623 INFO L93 Difference]: Finished difference Result 3463 states and 4488 transitions. [2022-11-20 09:27:24,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 09:27:24,624 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-11-20 09:27:24,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:24,635 INFO L225 Difference]: With dead ends: 3463 [2022-11-20 09:27:24,635 INFO L226 Difference]: Without dead ends: 2395 [2022-11-20 09:27:24,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-11-20 09:27:24,642 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 786 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 840 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:24,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [811 Valid, 840 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 09:27:24,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2395 states. [2022-11-20 09:27:24,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2395 to 2137. [2022-11-20 09:27:24,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2137 states, 1678 states have (on average 1.296185935637664) internal successors, (2175), 1707 states have internal predecessors, (2175), 235 states have call successors, (235), 180 states have call predecessors, (235), 222 states have return successors, (333), 256 states have call predecessors, (333), 231 states have call successors, (333) [2022-11-20 09:27:24,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2137 states to 2137 states and 2743 transitions. [2022-11-20 09:27:24,809 INFO L78 Accepts]: Start accepts. Automaton has 2137 states and 2743 transitions. Word has length 66 [2022-11-20 09:27:24,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:24,810 INFO L495 AbstractCegarLoop]: Abstraction has 2137 states and 2743 transitions. [2022-11-20 09:27:24,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 09:27:24,811 INFO L276 IsEmpty]: Start isEmpty. Operand 2137 states and 2743 transitions. [2022-11-20 09:27:24,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-20 09:27:24,815 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:24,815 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:24,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 09:27:24,815 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:24,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:24,816 INFO L85 PathProgramCache]: Analyzing trace with hash 721355205, now seen corresponding path program 1 times [2022-11-20 09:27:24,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:24,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148839540] [2022-11-20 09:27:24,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:24,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:24,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:24,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 09:27:24,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:24,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:27:24,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:24,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 09:27:24,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:24,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:27:24,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:24,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 09:27:24,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:24,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 09:27:24,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:24,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-20 09:27:24,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:24,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:24,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:24,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148839540] [2022-11-20 09:27:24,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148839540] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:24,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:24,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 09:27:24,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859023384] [2022-11-20 09:27:24,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:24,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:27:24,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:24,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:27:24,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:27:24,905 INFO L87 Difference]: Start difference. First operand 2137 states and 2743 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 09:27:25,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:25,719 INFO L93 Difference]: Finished difference Result 5047 states and 6393 transitions. [2022-11-20 09:27:25,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 09:27:25,720 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-11-20 09:27:25,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:25,739 INFO L225 Difference]: With dead ends: 5047 [2022-11-20 09:27:25,739 INFO L226 Difference]: Without dead ends: 3117 [2022-11-20 09:27:25,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-20 09:27:25,747 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 965 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 990 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:25,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [990 Valid, 693 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 09:27:25,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3117 states. [2022-11-20 09:27:25,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3117 to 2869. [2022-11-20 09:27:25,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2869 states, 2246 states have (on average 1.2818343722172751) internal successors, (2879), 2283 states have internal predecessors, (2879), 315 states have call successors, (315), 250 states have call predecessors, (315), 306 states have return successors, (442), 342 states have call predecessors, (442), 311 states have call successors, (442) [2022-11-20 09:27:26,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2869 states to 2869 states and 3636 transitions. [2022-11-20 09:27:26,012 INFO L78 Accepts]: Start accepts. Automaton has 2869 states and 3636 transitions. Word has length 72 [2022-11-20 09:27:26,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:26,013 INFO L495 AbstractCegarLoop]: Abstraction has 2869 states and 3636 transitions. [2022-11-20 09:27:26,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 09:27:26,013 INFO L276 IsEmpty]: Start isEmpty. Operand 2869 states and 3636 transitions. [2022-11-20 09:27:26,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-20 09:27:26,015 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:26,015 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 09:27:26,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 09:27:26,016 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:26,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:26,016 INFO L85 PathProgramCache]: Analyzing trace with hash 370804326, now seen corresponding path program 1 times [2022-11-20 09:27:26,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:26,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854300397] [2022-11-20 09:27:26,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:26,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:26,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:26,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 09:27:26,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:26,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:27:26,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:26,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 09:27:26,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:26,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:27:26,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:26,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 09:27:26,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:26,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 09:27:26,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:26,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-20 09:27:26,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:26,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:26,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:26,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854300397] [2022-11-20 09:27:26,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854300397] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:26,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:26,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 09:27:26,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583763722] [2022-11-20 09:27:26,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:26,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:27:26,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:26,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:27:26,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:27:26,125 INFO L87 Difference]: Start difference. First operand 2869 states and 3636 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-20 09:27:27,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:27,058 INFO L93 Difference]: Finished difference Result 3643 states and 4567 transitions. [2022-11-20 09:27:27,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 09:27:27,059 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2022-11-20 09:27:27,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:27,077 INFO L225 Difference]: With dead ends: 3643 [2022-11-20 09:27:27,077 INFO L226 Difference]: Without dead ends: 3640 [2022-11-20 09:27:27,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2022-11-20 09:27:27,080 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 1380 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1390 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:27,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1390 Valid, 669 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [288 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 09:27:27,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3640 states. [2022-11-20 09:27:27,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3640 to 3363. [2022-11-20 09:27:27,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3363 states, 2631 states have (on average 1.273660205245154) internal successors, (3351), 2673 states have internal predecessors, (3351), 365 states have call successors, (365), 294 states have call predecessors, (365), 365 states have return successors, (521), 402 states have call predecessors, (521), 362 states have call successors, (521) [2022-11-20 09:27:27,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3363 states to 3363 states and 4237 transitions. [2022-11-20 09:27:27,385 INFO L78 Accepts]: Start accepts. Automaton has 3363 states and 4237 transitions. Word has length 73 [2022-11-20 09:27:27,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:27,386 INFO L495 AbstractCegarLoop]: Abstraction has 3363 states and 4237 transitions. [2022-11-20 09:27:27,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-20 09:27:27,387 INFO L276 IsEmpty]: Start isEmpty. Operand 3363 states and 4237 transitions. [2022-11-20 09:27:27,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-20 09:27:27,389 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:27,389 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 09:27:27,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 09:27:27,389 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:27,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:27,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1390842321, now seen corresponding path program 1 times [2022-11-20 09:27:27,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:27,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704010021] [2022-11-20 09:27:27,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:27,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:27,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:27,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 09:27:27,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:27,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:27:27,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:27,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 09:27:27,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:27,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:27:27,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:27,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 09:27:27,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:27,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 09:27:27,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:27,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-20 09:27:27,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:27,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:27,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:27,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704010021] [2022-11-20 09:27:27,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704010021] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:27:27,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066506188] [2022-11-20 09:27:27,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:27,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:27:27,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_592896a7-eedb-4110-ae25-7ab0807b35c2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:27,638 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_592896a7-eedb-4110-ae25-7ab0807b35c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:27:27,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_592896a7-eedb-4110-ae25-7ab0807b35c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 09:27:27,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:27,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 09:27:27,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:27:28,265 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:28,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:27:28,503 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:28,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066506188] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:27:28,504 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:27:28,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2022-11-20 09:27:28,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863680702] [2022-11-20 09:27:28,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:27:28,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 09:27:28,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:28,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 09:27:28,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-20 09:27:28,506 INFO L87 Difference]: Start difference. First operand 3363 states and 4237 transitions. Second operand has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-20 09:27:30,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:30,894 INFO L93 Difference]: Finished difference Result 7804 states and 9723 transitions. [2022-11-20 09:27:30,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-20 09:27:30,895 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 74 [2022-11-20 09:27:30,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:30,970 INFO L225 Difference]: With dead ends: 7804 [2022-11-20 09:27:30,970 INFO L226 Difference]: Without dead ends: 7801 [2022-11-20 09:27:30,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 174 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2022-11-20 09:27:30,974 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 1715 mSDsluCounter, 1252 mSDsCounter, 0 mSdLazyCounter, 1418 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1779 SdHoareTripleChecker+Valid, 1607 SdHoareTripleChecker+Invalid, 1679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 1418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:30,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1779 Valid, 1607 Invalid, 1679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 1418 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-20 09:27:30,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7801 states. [2022-11-20 09:27:31,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7801 to 5153. [2022-11-20 09:27:31,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5153 states, 4035 states have (on average 1.2706319702602231) internal successors, (5127), 4099 states have internal predecessors, (5127), 549 states have call successors, (549), 452 states have call predecessors, (549), 567 states have return successors, (799), 608 states have call predecessors, (799), 546 states have call successors, (799) [2022-11-20 09:27:31,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5153 states to 5153 states and 6475 transitions. [2022-11-20 09:27:31,738 INFO L78 Accepts]: Start accepts. Automaton has 5153 states and 6475 transitions. Word has length 74 [2022-11-20 09:27:31,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:31,739 INFO L495 AbstractCegarLoop]: Abstraction has 5153 states and 6475 transitions. [2022-11-20 09:27:31,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-20 09:27:31,739 INFO L276 IsEmpty]: Start isEmpty. Operand 5153 states and 6475 transitions. [2022-11-20 09:27:31,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-20 09:27:31,742 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:31,743 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-11-20 09:27:31,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_592896a7-eedb-4110-ae25-7ab0807b35c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 09:27:31,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_592896a7-eedb-4110-ae25-7ab0807b35c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:27:31,949 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:31,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:31,949 INFO L85 PathProgramCache]: Analyzing trace with hash -2100794586, now seen corresponding path program 2 times [2022-11-20 09:27:31,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:31,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510610924] [2022-11-20 09:27:31,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:31,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:31,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:31,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 09:27:31,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:32,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:27:32,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:32,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 09:27:32,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:32,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:27:32,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:32,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 09:27:32,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:32,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 09:27:32,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:32,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-20 09:27:32,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:32,026 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:32,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:32,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510610924] [2022-11-20 09:27:32,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510610924] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:32,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:32,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 09:27:32,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581445149] [2022-11-20 09:27:32,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:32,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:27:32,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:32,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:27:32,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:27:32,029 INFO L87 Difference]: Start difference. First operand 5153 states and 6475 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-20 09:27:32,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:32,975 INFO L93 Difference]: Finished difference Result 7835 states and 9848 transitions. [2022-11-20 09:27:32,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 09:27:32,976 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 77 [2022-11-20 09:27:32,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:32,992 INFO L225 Difference]: With dead ends: 7835 [2022-11-20 09:27:32,993 INFO L226 Difference]: Without dead ends: 3760 [2022-11-20 09:27:33,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-20 09:27:33,002 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 690 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:33,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [718 Valid, 966 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 09:27:33,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3760 states. [2022-11-20 09:27:33,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3760 to 3525. [2022-11-20 09:27:33,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3525 states, 2763 states have (on average 1.2547955121245022) internal successors, (3467), 2805 states have internal predecessors, (3467), 381 states have call successors, (381), 308 states have call predecessors, (381), 379 states have return successors, (525), 418 states have call predecessors, (525), 378 states have call successors, (525) [2022-11-20 09:27:33,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3525 states to 3525 states and 4373 transitions. [2022-11-20 09:27:33,417 INFO L78 Accepts]: Start accepts. Automaton has 3525 states and 4373 transitions. Word has length 77 [2022-11-20 09:27:33,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:33,417 INFO L495 AbstractCegarLoop]: Abstraction has 3525 states and 4373 transitions. [2022-11-20 09:27:33,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-20 09:27:33,418 INFO L276 IsEmpty]: Start isEmpty. Operand 3525 states and 4373 transitions. [2022-11-20 09:27:33,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-20 09:27:33,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:33,422 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 09:27:33,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 09:27:33,422 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:33,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:33,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1884573217, now seen corresponding path program 1 times [2022-11-20 09:27:33,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:33,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47025543] [2022-11-20 09:27:33,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:33,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:33,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:33,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 09:27:33,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:33,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:27:33,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:33,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 09:27:33,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:33,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:27:33,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:33,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 09:27:33,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:33,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 09:27:33,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:33,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-20 09:27:33,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:33,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-20 09:27:33,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:33,564 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 09:27:33,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:33,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47025543] [2022-11-20 09:27:33,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47025543] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:33,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:33,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 09:27:33,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586888254] [2022-11-20 09:27:33,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:33,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 09:27:33,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:33,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 09:27:33,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:27:33,567 INFO L87 Difference]: Start difference. First operand 3525 states and 4373 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 09:27:35,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:35,692 INFO L93 Difference]: Finished difference Result 10397 states and 12790 transitions. [2022-11-20 09:27:35,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 09:27:35,693 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 84 [2022-11-20 09:27:35,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:35,722 INFO L225 Difference]: With dead ends: 10397 [2022-11-20 09:27:35,722 INFO L226 Difference]: Without dead ends: 5760 [2022-11-20 09:27:35,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2022-11-20 09:27:35,734 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 1177 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 972 mSolverCounterSat, 314 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1195 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 1286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 314 IncrementalHoareTripleChecker+Valid, 972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:35,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1195 Valid, 1122 Invalid, 1286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [314 Valid, 972 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 09:27:35,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5760 states. [2022-11-20 09:27:36,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5760 to 5440. [2022-11-20 09:27:36,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5440 states, 4221 states have (on average 1.2295664534470505) internal successors, (5190), 4306 states have internal predecessors, (5190), 585 states have call successors, (585), 482 states have call predecessors, (585), 632 states have return successors, (907), 658 states have call predecessors, (907), 582 states have call successors, (907) [2022-11-20 09:27:36,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5440 states to 5440 states and 6682 transitions. [2022-11-20 09:27:36,414 INFO L78 Accepts]: Start accepts. Automaton has 5440 states and 6682 transitions. Word has length 84 [2022-11-20 09:27:36,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:36,414 INFO L495 AbstractCegarLoop]: Abstraction has 5440 states and 6682 transitions. [2022-11-20 09:27:36,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 09:27:36,415 INFO L276 IsEmpty]: Start isEmpty. Operand 5440 states and 6682 transitions. [2022-11-20 09:27:36,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-20 09:27:36,419 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:36,419 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:36,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 09:27:36,420 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:36,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:36,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1300737020, now seen corresponding path program 1 times [2022-11-20 09:27:36,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:36,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696505339] [2022-11-20 09:27:36,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:36,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:36,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:36,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 09:27:36,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:36,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:27:36,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:36,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 09:27:36,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:36,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:27:36,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:36,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 09:27:36,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:36,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 09:27:36,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:36,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-20 09:27:36,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:36,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 09:27:36,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:36,564 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 09:27:36,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:36,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696505339] [2022-11-20 09:27:36,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696505339] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:36,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:36,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 09:27:36,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643843687] [2022-11-20 09:27:36,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:36,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 09:27:36,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:36,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 09:27:36,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:27:36,567 INFO L87 Difference]: Start difference. First operand 5440 states and 6682 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 09:27:38,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:38,469 INFO L93 Difference]: Finished difference Result 9443 states and 11522 transitions. [2022-11-20 09:27:38,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 09:27:38,469 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 93 [2022-11-20 09:27:38,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:38,489 INFO L225 Difference]: With dead ends: 9443 [2022-11-20 09:27:38,489 INFO L226 Difference]: Without dead ends: 4850 [2022-11-20 09:27:38,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2022-11-20 09:27:38,499 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 1394 mSDsluCounter, 1309 mSDsCounter, 0 mSdLazyCounter, 1369 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1436 SdHoareTripleChecker+Valid, 1567 SdHoareTripleChecker+Invalid, 1667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 1369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:38,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1436 Valid, 1567 Invalid, 1667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 1369 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-20 09:27:38,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4850 states. [2022-11-20 09:27:39,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4850 to 4516. [2022-11-20 09:27:39,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4516 states, 3510 states have (on average 1.221937321937322) internal successors, (4289), 3577 states have internal predecessors, (4289), 486 states have call successors, (486), 397 states have call predecessors, (486), 518 states have return successors, (685), 548 states have call predecessors, (685), 483 states have call successors, (685) [2022-11-20 09:27:39,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4516 states to 4516 states and 5460 transitions. [2022-11-20 09:27:39,026 INFO L78 Accepts]: Start accepts. Automaton has 4516 states and 5460 transitions. Word has length 93 [2022-11-20 09:27:39,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:39,027 INFO L495 AbstractCegarLoop]: Abstraction has 4516 states and 5460 transitions. [2022-11-20 09:27:39,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 09:27:39,027 INFO L276 IsEmpty]: Start isEmpty. Operand 4516 states and 5460 transitions. [2022-11-20 09:27:39,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-20 09:27:39,031 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:39,031 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:39,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 09:27:39,032 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:39,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:39,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1368673816, now seen corresponding path program 1 times [2022-11-20 09:27:39,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:39,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793686693] [2022-11-20 09:27:39,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:39,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:39,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:39,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 09:27:39,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:39,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 09:27:39,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:39,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 09:27:39,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:39,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 09:27:39,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:39,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-20 09:27:39,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:39,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:39,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:39,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793686693] [2022-11-20 09:27:39,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793686693] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:39,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:39,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 09:27:39,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453383536] [2022-11-20 09:27:39,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:39,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:27:39,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:39,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:27:39,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:27:39,161 INFO L87 Difference]: Start difference. First operand 4516 states and 5460 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 09:27:41,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:41,524 INFO L93 Difference]: Finished difference Result 4970 states and 6171 transitions. [2022-11-20 09:27:41,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 09:27:41,525 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2022-11-20 09:27:41,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:41,554 INFO L225 Difference]: With dead ends: 4970 [2022-11-20 09:27:41,554 INFO L226 Difference]: Without dead ends: 4798 [2022-11-20 09:27:41,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-20 09:27:41,559 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 874 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 1150 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 1268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:41,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [895 Valid, 887 Invalid, 1268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1150 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-20 09:27:41,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4798 states. [2022-11-20 09:27:42,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4798 to 4689. [2022-11-20 09:27:42,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4689 states, 3663 states have (on average 1.2358722358722358) internal successors, (4527), 3731 states have internal predecessors, (4527), 499 states have call successors, (499), 403 states have call predecessors, (499), 525 states have return successors, (701), 561 states have call predecessors, (701), 496 states have call successors, (701) [2022-11-20 09:27:42,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4689 states to 4689 states and 5727 transitions. [2022-11-20 09:27:42,329 INFO L78 Accepts]: Start accepts. Automaton has 4689 states and 5727 transitions. Word has length 91 [2022-11-20 09:27:42,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:42,330 INFO L495 AbstractCegarLoop]: Abstraction has 4689 states and 5727 transitions. [2022-11-20 09:27:42,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 09:27:42,330 INFO L276 IsEmpty]: Start isEmpty. Operand 4689 states and 5727 transitions. [2022-11-20 09:27:42,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-20 09:27:42,334 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:42,334 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:42,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 09:27:42,334 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:42,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:42,335 INFO L85 PathProgramCache]: Analyzing trace with hash 871588836, now seen corresponding path program 1 times [2022-11-20 09:27:42,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:42,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495932397] [2022-11-20 09:27:42,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:42,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:42,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:42,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 09:27:42,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:42,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 09:27:42,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:42,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 09:27:42,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:42,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 09:27:42,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:42,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-20 09:27:42,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:42,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:42,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:42,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495932397] [2022-11-20 09:27:42,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495932397] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:42,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:42,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 09:27:42,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474747179] [2022-11-20 09:27:42,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:42,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:27:42,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:42,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:27:42,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:27:42,478 INFO L87 Difference]: Start difference. First operand 4689 states and 5727 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 09:27:44,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:44,872 INFO L93 Difference]: Finished difference Result 5373 states and 6793 transitions. [2022-11-20 09:27:44,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 09:27:44,872 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2022-11-20 09:27:44,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:44,896 INFO L225 Difference]: With dead ends: 5373 [2022-11-20 09:27:44,896 INFO L226 Difference]: Without dead ends: 5028 [2022-11-20 09:27:44,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 09:27:44,900 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 873 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 1739 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 1496 SdHoareTripleChecker+Invalid, 1824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:44,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [894 Valid, 1496 Invalid, 1824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1739 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-20 09:27:44,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5028 states. [2022-11-20 09:27:45,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5028 to 4851. [2022-11-20 09:27:45,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4851 states, 3805 states have (on average 1.2465177398160316) internal successors, (4743), 3874 states have internal predecessors, (4743), 512 states have call successors, (512), 409 states have call predecessors, (512), 532 states have return successors, (716), 575 states have call predecessors, (716), 509 states have call successors, (716) [2022-11-20 09:27:45,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4851 states to 4851 states and 5971 transitions. [2022-11-20 09:27:45,616 INFO L78 Accepts]: Start accepts. Automaton has 4851 states and 5971 transitions. Word has length 91 [2022-11-20 09:27:45,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:45,616 INFO L495 AbstractCegarLoop]: Abstraction has 4851 states and 5971 transitions. [2022-11-20 09:27:45,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 09:27:45,617 INFO L276 IsEmpty]: Start isEmpty. Operand 4851 states and 5971 transitions. [2022-11-20 09:27:45,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-20 09:27:45,621 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:45,621 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:45,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 09:27:45,621 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:45,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:45,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1689274010, now seen corresponding path program 1 times [2022-11-20 09:27:45,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:45,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270550439] [2022-11-20 09:27:45,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:45,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:45,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:45,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 09:27:45,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:45,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 09:27:45,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:45,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 09:27:45,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:45,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 09:27:45,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:45,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-20 09:27:45,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:45,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:45,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:45,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270550439] [2022-11-20 09:27:45,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270550439] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:45,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:45,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 09:27:45,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759711055] [2022-11-20 09:27:45,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:45,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:27:45,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:45,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:27:45,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:27:45,776 INFO L87 Difference]: Start difference. First operand 4851 states and 5971 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 09:27:48,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:48,250 INFO L93 Difference]: Finished difference Result 5966 states and 7705 transitions. [2022-11-20 09:27:48,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 09:27:48,251 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2022-11-20 09:27:48,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:48,272 INFO L225 Difference]: With dead ends: 5966 [2022-11-20 09:27:48,272 INFO L226 Difference]: Without dead ends: 5459 [2022-11-20 09:27:48,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 09:27:48,277 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 871 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 1735 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 1494 SdHoareTripleChecker+Invalid, 1822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:48,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [892 Valid, 1494 Invalid, 1822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1735 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-20 09:27:48,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5459 states. [2022-11-20 09:27:49,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5459 to 5176. [2022-11-20 09:27:49,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5176 states, 4090 states have (on average 1.2655256723716382) internal successors, (5176), 4161 states have internal predecessors, (5176), 538 states have call successors, (538), 421 states have call predecessors, (538), 546 states have return successors, (750), 603 states have call predecessors, (750), 535 states have call successors, (750) [2022-11-20 09:27:49,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5176 states to 5176 states and 6464 transitions. [2022-11-20 09:27:49,030 INFO L78 Accepts]: Start accepts. Automaton has 5176 states and 6464 transitions. Word has length 91 [2022-11-20 09:27:49,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:49,030 INFO L495 AbstractCegarLoop]: Abstraction has 5176 states and 6464 transitions. [2022-11-20 09:27:49,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 09:27:49,031 INFO L276 IsEmpty]: Start isEmpty. Operand 5176 states and 6464 transitions. [2022-11-20 09:27:49,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-20 09:27:49,036 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:49,036 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:49,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 09:27:49,037 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:49,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:49,037 INFO L85 PathProgramCache]: Analyzing trace with hash -802051164, now seen corresponding path program 1 times [2022-11-20 09:27:49,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:49,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439669122] [2022-11-20 09:27:49,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:49,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:49,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:49,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 09:27:49,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:49,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 09:27:49,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:49,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 09:27:49,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:49,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 09:27:49,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:49,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-20 09:27:49,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:49,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:49,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:49,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439669122] [2022-11-20 09:27:49,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439669122] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:49,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:49,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 09:27:49,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464807950] [2022-11-20 09:27:49,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:49,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:27:49,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:49,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:27:49,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:27:49,180 INFO L87 Difference]: Start difference. First operand 5176 states and 6464 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 09:27:51,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:51,023 INFO L93 Difference]: Finished difference Result 6279 states and 8189 transitions. [2022-11-20 09:27:51,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:27:51,024 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2022-11-20 09:27:51,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:51,043 INFO L225 Difference]: With dead ends: 6279 [2022-11-20 09:27:51,043 INFO L226 Difference]: Without dead ends: 5447 [2022-11-20 09:27:51,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-20 09:27:51,050 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 710 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 925 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 1013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:51,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [732 Valid, 884 Invalid, 1013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 925 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 09:27:51,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5447 states. [2022-11-20 09:27:51,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5447 to 5176. [2022-11-20 09:27:51,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5176 states, 4090 states have (on average 1.2643031784841077) internal successors, (5171), 4161 states have internal predecessors, (5171), 538 states have call successors, (538), 421 states have call predecessors, (538), 546 states have return successors, (750), 603 states have call predecessors, (750), 535 states have call successors, (750) [2022-11-20 09:27:51,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5176 states to 5176 states and 6459 transitions. [2022-11-20 09:27:51,821 INFO L78 Accepts]: Start accepts. Automaton has 5176 states and 6459 transitions. Word has length 91 [2022-11-20 09:27:51,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:51,822 INFO L495 AbstractCegarLoop]: Abstraction has 5176 states and 6459 transitions. [2022-11-20 09:27:51,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 09:27:51,822 INFO L276 IsEmpty]: Start isEmpty. Operand 5176 states and 6459 transitions. [2022-11-20 09:27:51,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-20 09:27:51,827 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:51,827 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:51,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 09:27:51,827 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:51,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:51,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1581873574, now seen corresponding path program 1 times [2022-11-20 09:27:51,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:51,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356026345] [2022-11-20 09:27:51,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:51,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:51,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:51,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 09:27:51,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:51,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 09:27:51,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:51,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 09:27:51,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:51,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 09:27:51,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:51,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-20 09:27:51,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:51,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:51,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:51,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356026345] [2022-11-20 09:27:51,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356026345] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:51,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:51,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 09:27:51,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028231747] [2022-11-20 09:27:51,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:51,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:27:51,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:51,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:27:51,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:27:51,976 INFO L87 Difference]: Start difference. First operand 5176 states and 6459 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 09:27:54,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:54,582 INFO L93 Difference]: Finished difference Result 7104 states and 9426 transitions. [2022-11-20 09:27:54,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 09:27:54,582 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2022-11-20 09:27:54,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:54,603 INFO L225 Difference]: With dead ends: 7104 [2022-11-20 09:27:54,604 INFO L226 Difference]: Without dead ends: 6272 [2022-11-20 09:27:54,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 09:27:54,610 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 865 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 1697 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 1494 SdHoareTripleChecker+Invalid, 1784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:54,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [886 Valid, 1494 Invalid, 1784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1697 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-20 09:27:54,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6272 states. [2022-11-20 09:27:55,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6272 to 5831. [2022-11-20 09:27:55,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5831 states, 4665 states have (on average 1.2943193997856377) internal successors, (6038), 4740 states have internal predecessors, (6038), 590 states have call successors, (590), 445 states have call predecessors, (590), 574 states have return successors, (824), 659 states have call predecessors, (824), 587 states have call successors, (824) [2022-11-20 09:27:55,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5831 states to 5831 states and 7452 transitions. [2022-11-20 09:27:55,635 INFO L78 Accepts]: Start accepts. Automaton has 5831 states and 7452 transitions. Word has length 91 [2022-11-20 09:27:55,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:55,635 INFO L495 AbstractCegarLoop]: Abstraction has 5831 states and 7452 transitions. [2022-11-20 09:27:55,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 09:27:55,636 INFO L276 IsEmpty]: Start isEmpty. Operand 5831 states and 7452 transitions. [2022-11-20 09:27:55,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-20 09:27:55,640 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:55,641 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:55,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 09:27:55,641 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:55,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:55,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1658774372, now seen corresponding path program 1 times [2022-11-20 09:27:55,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:55,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600232912] [2022-11-20 09:27:55,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:55,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:55,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:55,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 09:27:55,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:55,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 09:27:55,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:55,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 09:27:55,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:55,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 09:27:55,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:55,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-20 09:27:55,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:55,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:55,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:55,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600232912] [2022-11-20 09:27:55,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600232912] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:55,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:55,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 09:27:55,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089129696] [2022-11-20 09:27:55,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:55,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:27:55,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:55,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:27:55,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:27:55,809 INFO L87 Difference]: Start difference. First operand 5831 states and 7452 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 09:27:57,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:57,533 INFO L93 Difference]: Finished difference Result 7747 states and 10423 transitions. [2022-11-20 09:27:57,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:27:57,534 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2022-11-20 09:27:57,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:57,552 INFO L225 Difference]: With dead ends: 7747 [2022-11-20 09:27:57,553 INFO L226 Difference]: Without dead ends: 6260 [2022-11-20 09:27:57,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-20 09:27:57,560 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 833 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 855 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:57,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [855 Valid, 729 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 808 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 09:27:57,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6260 states. [2022-11-20 09:27:58,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6260 to 5831. [2022-11-20 09:27:58,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5831 states, 4665 states have (on average 1.2923901393354769) internal successors, (6029), 4740 states have internal predecessors, (6029), 590 states have call successors, (590), 445 states have call predecessors, (590), 574 states have return successors, (824), 659 states have call predecessors, (824), 587 states have call successors, (824) [2022-11-20 09:27:58,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5831 states to 5831 states and 7443 transitions. [2022-11-20 09:27:58,346 INFO L78 Accepts]: Start accepts. Automaton has 5831 states and 7443 transitions. Word has length 91 [2022-11-20 09:27:58,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:58,346 INFO L495 AbstractCegarLoop]: Abstraction has 5831 states and 7443 transitions. [2022-11-20 09:27:58,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 09:27:58,347 INFO L276 IsEmpty]: Start isEmpty. Operand 5831 states and 7443 transitions. [2022-11-20 09:27:58,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-20 09:27:58,351 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:58,352 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:58,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 09:27:58,352 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:58,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:58,353 INFO L85 PathProgramCache]: Analyzing trace with hash -727735134, now seen corresponding path program 1 times [2022-11-20 09:27:58,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:58,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127590869] [2022-11-20 09:27:58,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:58,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:58,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:58,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 09:27:58,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:58,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 09:27:58,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:58,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 09:27:58,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:58,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 09:27:58,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:58,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-20 09:27:58,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:58,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:58,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:58,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127590869] [2022-11-20 09:27:58,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127590869] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:58,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:58,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 09:27:58,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30936366] [2022-11-20 09:27:58,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:58,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:27:58,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:58,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:27:58,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:27:58,478 INFO L87 Difference]: Start difference. First operand 5831 states and 7443 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 09:28:00,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:00,499 INFO L93 Difference]: Finished difference Result 7737 states and 10376 transitions. [2022-11-20 09:28:00,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:28:00,499 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2022-11-20 09:28:00,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:00,520 INFO L225 Difference]: With dead ends: 7737 [2022-11-20 09:28:00,520 INFO L226 Difference]: Without dead ends: 6250 [2022-11-20 09:28:00,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-20 09:28:00,528 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 719 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 853 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:00,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [741 Valid, 881 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 853 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 09:28:00,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6250 states. [2022-11-20 09:28:01,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6250 to 5831. [2022-11-20 09:28:01,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5831 states, 4665 states have (on average 1.2904608788853162) internal successors, (6020), 4740 states have internal predecessors, (6020), 590 states have call successors, (590), 445 states have call predecessors, (590), 574 states have return successors, (824), 659 states have call predecessors, (824), 587 states have call successors, (824) [2022-11-20 09:28:01,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5831 states to 5831 states and 7434 transitions. [2022-11-20 09:28:01,348 INFO L78 Accepts]: Start accepts. Automaton has 5831 states and 7434 transitions. Word has length 91 [2022-11-20 09:28:01,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:01,348 INFO L495 AbstractCegarLoop]: Abstraction has 5831 states and 7434 transitions. [2022-11-20 09:28:01,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 09:28:01,349 INFO L276 IsEmpty]: Start isEmpty. Operand 5831 states and 7434 transitions. [2022-11-20 09:28:01,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-20 09:28:01,353 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:01,353 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:01,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-20 09:28:01,354 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:01,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:01,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1220361308, now seen corresponding path program 1 times [2022-11-20 09:28:01,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:01,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670708100] [2022-11-20 09:28:01,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:01,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:01,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:01,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 09:28:01,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:01,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 09:28:01,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:01,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 09:28:01,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:01,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 09:28:01,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:01,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-20 09:28:01,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:01,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:01,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:01,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670708100] [2022-11-20 09:28:01,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670708100] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:01,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:01,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 09:28:01,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90009941] [2022-11-20 09:28:01,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:01,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:28:01,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:01,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:28:01,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:28:01,495 INFO L87 Difference]: Start difference. First operand 5831 states and 7434 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 09:28:04,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:04,455 INFO L93 Difference]: Finished difference Result 9573 states and 13115 transitions. [2022-11-20 09:28:04,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 09:28:04,458 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2022-11-20 09:28:04,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:04,484 INFO L225 Difference]: With dead ends: 9573 [2022-11-20 09:28:04,484 INFO L226 Difference]: Without dead ends: 8086 [2022-11-20 09:28:04,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-20 09:28:04,492 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 904 mSDsluCounter, 1138 mSDsCounter, 0 mSdLazyCounter, 1612 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 930 SdHoareTripleChecker+Valid, 1484 SdHoareTripleChecker+Invalid, 1704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:04,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [930 Valid, 1484 Invalid, 1704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1612 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-20 09:28:04,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8086 states. [2022-11-20 09:28:05,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8086 to 7148. [2022-11-20 09:28:05,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7148 states, 5830 states have (on average 1.3317324185248713) internal successors, (7764), 5913 states have internal predecessors, (7764), 686 states have call successors, (686), 493 states have call predecessors, (686), 630 states have return successors, (982), 763 states have call predecessors, (982), 683 states have call successors, (982) [2022-11-20 09:28:05,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7148 states to 7148 states and 9432 transitions. [2022-11-20 09:28:05,824 INFO L78 Accepts]: Start accepts. Automaton has 7148 states and 9432 transitions. Word has length 91 [2022-11-20 09:28:05,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:05,825 INFO L495 AbstractCegarLoop]: Abstraction has 7148 states and 9432 transitions. [2022-11-20 09:28:05,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 09:28:05,825 INFO L276 IsEmpty]: Start isEmpty. Operand 7148 states and 9432 transitions. [2022-11-20 09:28:05,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-20 09:28:05,831 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:05,831 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:05,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-20 09:28:05,832 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:05,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:05,832 INFO L85 PathProgramCache]: Analyzing trace with hash -266421150, now seen corresponding path program 1 times [2022-11-20 09:28:05,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:05,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495259086] [2022-11-20 09:28:05,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:05,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:05,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:05,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 09:28:05,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:05,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 09:28:05,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:05,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 09:28:05,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:05,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 09:28:05,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:05,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-20 09:28:05,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:05,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:05,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:05,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495259086] [2022-11-20 09:28:05,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495259086] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:05,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:05,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 09:28:05,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705332309] [2022-11-20 09:28:05,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:05,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:28:05,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:05,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:28:05,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:28:05,969 INFO L87 Difference]: Start difference. First operand 7148 states and 9432 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 09:28:09,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:09,205 INFO L93 Difference]: Finished difference Result 14066 states and 19975 transitions. [2022-11-20 09:28:09,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 09:28:09,206 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2022-11-20 09:28:09,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:09,244 INFO L225 Difference]: With dead ends: 14066 [2022-11-20 09:28:09,245 INFO L226 Difference]: Without dead ends: 11262 [2022-11-20 09:28:09,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-20 09:28:09,257 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 861 mSDsluCounter, 1138 mSDsCounter, 0 mSdLazyCounter, 1597 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 1484 SdHoareTripleChecker+Invalid, 1690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:09,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [887 Valid, 1484 Invalid, 1690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1597 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-20 09:28:09,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11262 states. [2022-11-20 09:28:10,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11262 to 9767. [2022-11-20 09:28:10,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9767 states, 8153 states have (on average 1.3793695572182019) internal successors, (11246), 8252 states have internal predecessors, (11246), 870 states have call successors, (870), 589 states have call predecessors, (870), 742 states have return successors, (1344), 963 states have call predecessors, (1344), 867 states have call successors, (1344) [2022-11-20 09:28:10,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9767 states to 9767 states and 13460 transitions. [2022-11-20 09:28:10,579 INFO L78 Accepts]: Start accepts. Automaton has 9767 states and 13460 transitions. Word has length 91 [2022-11-20 09:28:10,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:10,579 INFO L495 AbstractCegarLoop]: Abstraction has 9767 states and 13460 transitions. [2022-11-20 09:28:10,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 09:28:10,579 INFO L276 IsEmpty]: Start isEmpty. Operand 9767 states and 13460 transitions. [2022-11-20 09:28:10,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-20 09:28:10,586 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:10,586 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:10,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-20 09:28:10,586 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:10,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:10,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1482574876, now seen corresponding path program 1 times [2022-11-20 09:28:10,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:10,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698027571] [2022-11-20 09:28:10,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:10,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:10,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:10,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 09:28:10,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:10,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 09:28:10,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:10,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 09:28:10,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:10,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 09:28:10,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:10,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-20 09:28:10,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:10,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:10,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:10,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698027571] [2022-11-20 09:28:10,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698027571] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:10,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:10,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 09:28:10,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531690922] [2022-11-20 09:28:10,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:10,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:28:10,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:10,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:28:10,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:28:10,716 INFO L87 Difference]: Start difference. First operand 9767 states and 13460 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 09:28:14,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:14,258 INFO L93 Difference]: Finished difference Result 18999 states and 27445 transitions. [2022-11-20 09:28:14,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 09:28:14,259 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2022-11-20 09:28:14,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:14,305 INFO L225 Difference]: With dead ends: 18999 [2022-11-20 09:28:14,305 INFO L226 Difference]: Without dead ends: 13577 [2022-11-20 09:28:14,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-11-20 09:28:14,327 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 560 mSDsluCounter, 952 mSDsCounter, 0 mSdLazyCounter, 1261 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 1204 SdHoareTripleChecker+Invalid, 1334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:14,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [560 Valid, 1204 Invalid, 1334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1261 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 09:28:14,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13577 states. [2022-11-20 09:28:15,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13577 to 9866. [2022-11-20 09:28:15,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9866 states, 8252 states have (on average 1.374818225884634) internal successors, (11345), 8351 states have internal predecessors, (11345), 870 states have call successors, (870), 589 states have call predecessors, (870), 742 states have return successors, (1344), 963 states have call predecessors, (1344), 867 states have call successors, (1344) [2022-11-20 09:28:15,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9866 states to 9866 states and 13559 transitions. [2022-11-20 09:28:15,633 INFO L78 Accepts]: Start accepts. Automaton has 9866 states and 13559 transitions. Word has length 91 [2022-11-20 09:28:15,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:15,633 INFO L495 AbstractCegarLoop]: Abstraction has 9866 states and 13559 transitions. [2022-11-20 09:28:15,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 09:28:15,633 INFO L276 IsEmpty]: Start isEmpty. Operand 9866 states and 13559 transitions. [2022-11-20 09:28:15,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-20 09:28:15,640 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:15,640 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:15,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-20 09:28:15,641 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:15,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:15,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1048845790, now seen corresponding path program 1 times [2022-11-20 09:28:15,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:15,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726310436] [2022-11-20 09:28:15,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:15,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:15,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:15,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 09:28:15,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:15,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 09:28:15,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:15,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 09:28:15,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:15,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 09:28:15,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:15,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-20 09:28:15,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:15,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:15,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:15,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726310436] [2022-11-20 09:28:15,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726310436] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:15,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:15,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 09:28:15,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584648464] [2022-11-20 09:28:15,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:15,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:28:15,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:15,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:28:15,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:28:15,841 INFO L87 Difference]: Start difference. First operand 9866 states and 13559 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 09:28:22,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:22,605 INFO L93 Difference]: Finished difference Result 34668 states and 52337 transitions. [2022-11-20 09:28:22,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 09:28:22,606 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2022-11-20 09:28:22,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:22,686 INFO L225 Difference]: With dead ends: 34668 [2022-11-20 09:28:22,686 INFO L226 Difference]: Without dead ends: 29147 [2022-11-20 09:28:22,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-11-20 09:28:22,710 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 1853 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 1780 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1878 SdHoareTripleChecker+Valid, 1269 SdHoareTripleChecker+Invalid, 2085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 1780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:22,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1878 Valid, 1269 Invalid, 2085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 1780 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-20 09:28:22,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29147 states. [2022-11-20 09:28:26,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29147 to 24698. [2022-11-20 09:28:26,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24698 states, 21266 states have (on average 1.4271607260415686) internal successors, (30350), 21560 states have internal predecessors, (30350), 1998 states have call successors, (1998), 1183 states have call predecessors, (1998), 1432 states have return successors, (3771), 1992 states have call predecessors, (3771), 1995 states have call successors, (3771) [2022-11-20 09:28:26,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24698 states to 24698 states and 36119 transitions. [2022-11-20 09:28:26,755 INFO L78 Accepts]: Start accepts. Automaton has 24698 states and 36119 transitions. Word has length 91 [2022-11-20 09:28:26,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:26,755 INFO L495 AbstractCegarLoop]: Abstraction has 24698 states and 36119 transitions. [2022-11-20 09:28:26,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 09:28:26,755 INFO L276 IsEmpty]: Start isEmpty. Operand 24698 states and 36119 transitions. [2022-11-20 09:28:26,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-20 09:28:26,774 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:26,775 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:26,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-20 09:28:26,775 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:26,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:26,776 INFO L85 PathProgramCache]: Analyzing trace with hash -948044783, now seen corresponding path program 1 times [2022-11-20 09:28:26,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:26,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231062279] [2022-11-20 09:28:26,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:26,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:26,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:26,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 09:28:26,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:26,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:28:26,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:26,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 09:28:26,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:26,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:28:26,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:26,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 09:28:26,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:26,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 09:28:26,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:26,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-20 09:28:26,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:26,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-20 09:28:26,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:26,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-20 09:28:26,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:26,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 09:28:26,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:26,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-20 09:28:26,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:26,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:28:26,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:26,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 09:28:26,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:26,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-20 09:28:26,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:26,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-20 09:28:26,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:26,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-20 09:28:26,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:26,962 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-20 09:28:26,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:26,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231062279] [2022-11-20 09:28:26,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231062279] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:28:26,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842981547] [2022-11-20 09:28:26,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:26,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:26,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_592896a7-eedb-4110-ae25-7ab0807b35c2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:28:26,965 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_592896a7-eedb-4110-ae25-7ab0807b35c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:28:26,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_592896a7-eedb-4110-ae25-7ab0807b35c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 09:28:27,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:27,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 09:28:27,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:27,168 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 09:28:27,168 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:28:27,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842981547] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:27,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:28:27,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2022-11-20 09:28:27,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617616925] [2022-11-20 09:28:27,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:27,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:28:27,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:27,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:28:27,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-20 09:28:27,171 INFO L87 Difference]: Start difference. First operand 24698 states and 36119 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 09:28:29,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:29,971 INFO L93 Difference]: Finished difference Result 26864 states and 38742 transitions. [2022-11-20 09:28:29,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:28:29,972 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2022-11-20 09:28:29,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:30,035 INFO L225 Difference]: With dead ends: 26864 [2022-11-20 09:28:30,035 INFO L226 Difference]: Without dead ends: 22559 [2022-11-20 09:28:30,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-11-20 09:28:30,046 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 34 mSDsluCounter, 1580 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1985 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:30,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 1985 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:28:30,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22559 states. [2022-11-20 09:28:33,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22559 to 22434. [2022-11-20 09:28:33,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22434 states, 19579 states have (on average 1.4452219214464477) internal successors, (28296), 19822 states have internal predecessors, (28296), 1722 states have call successors, (1722), 949 states have call predecessors, (1722), 1131 states have return successors, (3378), 1694 states have call predecessors, (3378), 1719 states have call successors, (3378) [2022-11-20 09:28:33,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22434 states to 22434 states and 33396 transitions. [2022-11-20 09:28:33,891 INFO L78 Accepts]: Start accepts. Automaton has 22434 states and 33396 transitions. Word has length 145 [2022-11-20 09:28:33,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:33,892 INFO L495 AbstractCegarLoop]: Abstraction has 22434 states and 33396 transitions. [2022-11-20 09:28:33,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 09:28:33,892 INFO L276 IsEmpty]: Start isEmpty. Operand 22434 states and 33396 transitions. [2022-11-20 09:28:33,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-20 09:28:33,915 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:33,915 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:33,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_592896a7-eedb-4110-ae25-7ab0807b35c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 09:28:34,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_592896a7-eedb-4110-ae25-7ab0807b35c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-20 09:28:34,117 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:34,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:34,117 INFO L85 PathProgramCache]: Analyzing trace with hash -634587689, now seen corresponding path program 1 times [2022-11-20 09:28:34,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:34,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077436120] [2022-11-20 09:28:34,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:34,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:34,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:34,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 09:28:34,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:34,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:28:34,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:34,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 09:28:34,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:34,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:28:34,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:34,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 09:28:34,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:34,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 09:28:34,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:34,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-20 09:28:34,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:34,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-20 09:28:34,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:34,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 09:28:34,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:34,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-20 09:28:34,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:34,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-20 09:28:34,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:34,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:28:34,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:34,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 09:28:34,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:34,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-20 09:28:34,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:34,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-20 09:28:34,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:34,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-20 09:28:34,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:34,360 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-11-20 09:28:34,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:34,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077436120] [2022-11-20 09:28:34,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077436120] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:34,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:34,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 09:28:34,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314834801] [2022-11-20 09:28:34,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:34,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:28:34,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:34,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:28:34,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:28:34,363 INFO L87 Difference]: Start difference. First operand 22434 states and 33396 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-20 09:28:37,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:37,506 INFO L93 Difference]: Finished difference Result 22499 states and 33464 transitions. [2022-11-20 09:28:37,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:28:37,507 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 147 [2022-11-20 09:28:37,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:37,560 INFO L225 Difference]: With dead ends: 22499 [2022-11-20 09:28:37,560 INFO L226 Difference]: Without dead ends: 22056 [2022-11-20 09:28:37,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-20 09:28:37,568 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 585 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:37,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [600 Valid, 745 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 09:28:37,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22056 states. [2022-11-20 09:28:40,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22056 to 21994. [2022-11-20 09:28:40,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21994 states, 19235 states have (on average 1.4500649857031453) internal successors, (27892), 19475 states have internal predecessors, (27892), 1676 states have call successors, (1676), 909 states have call predecessors, (1676), 1081 states have return successors, (3314), 1641 states have call predecessors, (3314), 1673 states have call successors, (3314) [2022-11-20 09:28:40,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21994 states to 21994 states and 32882 transitions. [2022-11-20 09:28:40,727 INFO L78 Accepts]: Start accepts. Automaton has 21994 states and 32882 transitions. Word has length 147 [2022-11-20 09:28:40,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:40,727 INFO L495 AbstractCegarLoop]: Abstraction has 21994 states and 32882 transitions. [2022-11-20 09:28:40,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-20 09:28:40,728 INFO L276 IsEmpty]: Start isEmpty. Operand 21994 states and 32882 transitions. [2022-11-20 09:28:40,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-20 09:28:40,757 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:40,757 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-20 09:28:40,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-20 09:28:40,758 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:40,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:40,758 INFO L85 PathProgramCache]: Analyzing trace with hash 660156374, now seen corresponding path program 1 times [2022-11-20 09:28:40,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:40,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766188835] [2022-11-20 09:28:40,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:40,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:40,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:40,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 09:28:40,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:40,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 09:28:40,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:40,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 09:28:40,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:40,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 09:28:40,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:40,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-20 09:28:40,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:40,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-20 09:28:40,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:40,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-20 09:28:40,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:40,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-20 09:28:40,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:40,955 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-20 09:28:40,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:40,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766188835] [2022-11-20 09:28:40,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766188835] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:28:40,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586303963] [2022-11-20 09:28:40,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:40,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:40,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_592896a7-eedb-4110-ae25-7ab0807b35c2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:28:40,958 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_592896a7-eedb-4110-ae25-7ab0807b35c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:28:40,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_592896a7-eedb-4110-ae25-7ab0807b35c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 09:28:41,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:41,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 09:28:41,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:41,208 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 09:28:41,208 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:28:41,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586303963] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:41,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:28:41,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-11-20 09:28:41,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405691008] [2022-11-20 09:28:41,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:41,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:28:41,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:41,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:28:41,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:28:41,211 INFO L87 Difference]: Start difference. First operand 21994 states and 32882 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 09:28:46,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:46,893 INFO L93 Difference]: Finished difference Result 62231 states and 95147 transitions. [2022-11-20 09:28:46,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:28:46,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 147 [2022-11-20 09:28:46,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:47,046 INFO L225 Difference]: With dead ends: 62231 [2022-11-20 09:28:47,046 INFO L226 Difference]: Without dead ends: 41878 [2022-11-20 09:28:47,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:28:47,110 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 347 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:47,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 659 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:28:47,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41878 states.