./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.05.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_c2e4f4a8-c0d0-4bee-b1c3-9d380012f6b7/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e4f4a8-c0d0-4bee-b1c3-9d380012f6b7/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e4f4a8-c0d0-4bee-b1c3-9d380012f6b7/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e4f4a8-c0d0-4bee-b1c3-9d380012f6b7/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.05.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e4f4a8-c0d0-4bee-b1c3-9d380012f6b7/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e4f4a8-c0d0-4bee-b1c3-9d380012f6b7/bin/uautomizer-tPACEb0tL8 --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 27587b975a36272f97d565edc796c457ff04a64b538fe9933b800d0dda8dcceb --- 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-e04fb08 [2022-11-16 12:28:20,731 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:28:20,733 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:28:20,752 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:28:20,753 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:28:20,754 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:28:20,755 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:28:20,757 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:28:20,759 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:28:20,760 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:28:20,761 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:28:20,762 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:28:20,763 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:28:20,764 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:28:20,765 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:28:20,766 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:28:20,767 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:28:20,768 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:28:20,770 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:28:20,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:28:20,773 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:28:20,778 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:28:20,779 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:28:20,782 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:28:20,786 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:28:20,786 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:28:20,787 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:28:20,788 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:28:20,788 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:28:20,789 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:28:20,790 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:28:20,790 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:28:20,791 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:28:20,792 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:28:20,793 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:28:20,793 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:28:20,794 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:28:20,794 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:28:20,795 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:28:20,796 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:28:20,797 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:28:20,798 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e4f4a8-c0d0-4bee-b1c3-9d380012f6b7/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:28:20,821 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:28:20,821 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:28:20,822 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:28:20,822 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:28:20,823 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:28:20,823 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:28:20,824 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:28:20,824 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:28:20,824 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:28:20,825 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:28:20,825 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:28:20,825 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:28:20,825 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:28:20,826 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:28:20,826 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:28:20,826 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:28:20,826 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:28:20,826 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:28:20,827 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:28:20,827 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:28:20,827 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:28:20,827 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:28:20,828 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:28:20,828 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:28:20,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:28:20,828 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:28:20,829 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:28:20,829 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:28:20,829 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:28:20,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:28:20,830 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:28:20,830 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:28:20,830 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:28:20,830 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_c2e4f4a8-c0d0-4bee-b1c3-9d380012f6b7/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e4f4a8-c0d0-4bee-b1c3-9d380012f6b7/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 27587b975a36272f97d565edc796c457ff04a64b538fe9933b800d0dda8dcceb [2022-11-16 12:28:21,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:28:21,121 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:28:21,124 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:28:21,126 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:28:21,127 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:28:21,128 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e4f4a8-c0d0-4bee-b1c3-9d380012f6b7/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.05.cil-2.c [2022-11-16 12:28:21,215 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e4f4a8-c0d0-4bee-b1c3-9d380012f6b7/bin/uautomizer-tPACEb0tL8/data/e2fe14cb0/0f1333dd48404b5c8e9f3c50c0c394c4/FLAG5cc6e8f3d [2022-11-16 12:28:22,413 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:28:22,414 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e4f4a8-c0d0-4bee-b1c3-9d380012f6b7/sv-benchmarks/c/combinations/Problem05_label45+token_ring.05.cil-2.c [2022-11-16 12:28:22,478 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e4f4a8-c0d0-4bee-b1c3-9d380012f6b7/bin/uautomizer-tPACEb0tL8/data/e2fe14cb0/0f1333dd48404b5c8e9f3c50c0c394c4/FLAG5cc6e8f3d [2022-11-16 12:28:22,618 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e4f4a8-c0d0-4bee-b1c3-9d380012f6b7/bin/uautomizer-tPACEb0tL8/data/e2fe14cb0/0f1333dd48404b5c8e9f3c50c0c394c4 [2022-11-16 12:28:22,621 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:28:22,623 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:28:22,626 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:28:22,626 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:28:22,629 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:28:22,630 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:28:22" (1/1) ... [2022-11-16 12:28:22,632 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@734b344c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:22, skipping insertion in model container [2022-11-16 12:28:22,632 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:28:22" (1/1) ... [2022-11-16 12:28:22,639 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:28:22,875 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:28:25,124 WARN L229 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_c2e4f4a8-c0d0-4bee-b1c3-9d380012f6b7/sv-benchmarks/c/combinations/Problem05_label45+token_ring.05.cil-2.c[380323,380336] [2022-11-16 12:28:25,156 WARN L229 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_c2e4f4a8-c0d0-4bee-b1c3-9d380012f6b7/sv-benchmarks/c/combinations/Problem05_label45+token_ring.05.cil-2.c[383339,383352] [2022-11-16 12:28:25,385 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:28:25,398 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:28:26,861 WARN L229 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_c2e4f4a8-c0d0-4bee-b1c3-9d380012f6b7/sv-benchmarks/c/combinations/Problem05_label45+token_ring.05.cil-2.c[380323,380336] [2022-11-16 12:28:26,897 WARN L229 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_c2e4f4a8-c0d0-4bee-b1c3-9d380012f6b7/sv-benchmarks/c/combinations/Problem05_label45+token_ring.05.cil-2.c[383339,383352] [2022-11-16 12:28:26,912 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:28:26,988 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:28:26,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:26 WrapperNode [2022-11-16 12:28:26,989 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:28:26,990 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:28:26,990 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:28:26,990 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:28:27,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:26" (1/1) ... [2022-11-16 12:28:27,103 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:26" (1/1) ... [2022-11-16 12:28:27,684 INFO L138 Inliner]: procedures = 54, calls = 57, calls flagged for inlining = 31, calls inlined = 31, statements flattened = 12798 [2022-11-16 12:28:27,685 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:28:27,701 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:28:27,701 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:28:27,701 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:28:27,713 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:26" (1/1) ... [2022-11-16 12:28:27,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:26" (1/1) ... [2022-11-16 12:28:27,908 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:26" (1/1) ... [2022-11-16 12:28:27,908 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:26" (1/1) ... [2022-11-16 12:28:28,265 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:26" (1/1) ... [2022-11-16 12:28:28,379 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:26" (1/1) ... [2022-11-16 12:28:28,414 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:26" (1/1) ... [2022-11-16 12:28:28,443 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:26" (1/1) ... [2022-11-16 12:28:28,668 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:28:28,669 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:28:28,670 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:28:28,670 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:28:28,674 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:26" (1/1) ... [2022-11-16 12:28:28,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:28:28,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e4f4a8-c0d0-4bee-b1c3-9d380012f6b7/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:28:28,715 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e4f4a8-c0d0-4bee-b1c3-9d380012f6b7/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:28:28,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e4f4a8-c0d0-4bee-b1c3-9d380012f6b7/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:28:28,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:28:28,776 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-16 12:28:28,776 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-16 12:28:28,776 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-16 12:28:28,776 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-16 12:28:28,777 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-16 12:28:28,777 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-16 12:28:28,777 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-11-16 12:28:28,777 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-11-16 12:28:28,777 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-16 12:28:28,778 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-16 12:28:28,778 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-16 12:28:28,778 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-16 12:28:28,778 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-16 12:28:28,778 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-16 12:28:28,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:28:28,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:28:28,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:28:28,936 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:28:28,939 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:28:38,775 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:28:38,814 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:28:38,814 INFO L300 CfgBuilder]: Removed 9 assume(true) statements. [2022-11-16 12:28:38,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:28:38 BoogieIcfgContainer [2022-11-16 12:28:38,819 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:28:38,821 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:28:38,821 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:28:38,831 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:28:38,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:28:22" (1/3) ... [2022-11-16 12:28:38,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@754b281a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:28:38, skipping insertion in model container [2022-11-16 12:28:38,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:26" (2/3) ... [2022-11-16 12:28:38,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@754b281a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:28:38, skipping insertion in model container [2022-11-16 12:28:38,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:28:38" (3/3) ... [2022-11-16 12:28:38,834 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.05.cil-2.c [2022-11-16 12:28:38,852 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:28:38,852 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-16 12:28:38,962 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:28:38,973 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;@6aae6c29, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:28:38,973 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-16 12:28:38,985 INFO L276 IsEmpty]: Start isEmpty. Operand has 2398 states, 2367 states have (on average 1.85297845373891) internal successors, (4386), 2372 states have internal predecessors, (4386), 21 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2022-11-16 12:28:39,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-16 12:28:39,000 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:28:39,001 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:39,001 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:28:39,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:39,007 INFO L85 PathProgramCache]: Analyzing trace with hash -645844934, now seen corresponding path program 1 times [2022-11-16 12:28:39,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:39,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382927916] [2022-11-16 12:28:39,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:39,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:39,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:39,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:28:39,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:39,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 12:28:39,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:39,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 12:28:39,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:39,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 12:28:39,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:39,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 12:28:39,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:39,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:28:39,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:39,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382927916] [2022-11-16 12:28:39,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382927916] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:39,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:28:39,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:28:39,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961132427] [2022-11-16 12:28:39,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:39,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:28:39,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:39,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:28:39,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:28:39,578 INFO L87 Difference]: Start difference. First operand has 2398 states, 2367 states have (on average 1.85297845373891) internal successors, (4386), 2372 states have internal predecessors, (4386), 21 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:28:41,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:28:41,206 INFO L93 Difference]: Finished difference Result 4852 states and 8953 transitions. [2022-11-16 12:28:41,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:28:41,209 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2022-11-16 12:28:41,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:28:41,234 INFO L225 Difference]: With dead ends: 4852 [2022-11-16 12:28:41,235 INFO L226 Difference]: Without dead ends: 2395 [2022-11-16 12:28:41,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:28:41,246 INFO L413 NwaCegarLoop]: 4227 mSDtfsCounter, 525 mSDsluCounter, 12301 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 16528 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:28:41,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [542 Valid, 16528 Invalid, 544 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [46 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-16 12:28:41,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2395 states. [2022-11-16 12:28:41,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2395 to 2330. [2022-11-16 12:28:41,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2330 states, 2301 states have (on average 1.841373315949587) internal successors, (4237), 2304 states have internal predecessors, (4237), 21 states have call successors, (21), 7 states have call predecessors, (21), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-11-16 12:28:41,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2330 states to 2330 states and 4277 transitions. [2022-11-16 12:28:41,400 INFO L78 Accepts]: Start accepts. Automaton has 2330 states and 4277 transitions. Word has length 102 [2022-11-16 12:28:41,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:28:41,400 INFO L495 AbstractCegarLoop]: Abstraction has 2330 states and 4277 transitions. [2022-11-16 12:28:41,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:28:41,401 INFO L276 IsEmpty]: Start isEmpty. Operand 2330 states and 4277 transitions. [2022-11-16 12:28:41,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-16 12:28:41,405 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:28:41,405 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:41,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:28:41,406 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:28:41,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:41,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1294737080, now seen corresponding path program 1 times [2022-11-16 12:28:41,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:41,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206752330] [2022-11-16 12:28:41,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:41,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:41,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:41,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:28:41,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:41,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 12:28:41,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:41,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 12:28:41,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:41,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 12:28:41,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:41,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 12:28:41,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:41,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:28:41,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:41,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206752330] [2022-11-16 12:28:41,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206752330] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:41,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:28:41,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:28:41,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379780952] [2022-11-16 12:28:41,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:41,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:28:41,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:41,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:28:41,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:28:41,657 INFO L87 Difference]: Start difference. First operand 2330 states and 4277 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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) [2022-11-16 12:28:43,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:28:43,814 INFO L93 Difference]: Finished difference Result 2856 states and 5108 transitions. [2022-11-16 12:28:43,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:28:43,816 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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 102 [2022-11-16 12:28:43,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:28:43,831 INFO L225 Difference]: With dead ends: 2856 [2022-11-16 12:28:43,831 INFO L226 Difference]: Without dead ends: 2660 [2022-11-16 12:28:43,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:28:43,836 INFO L413 NwaCegarLoop]: 4163 mSDtfsCounter, 4729 mSDsluCounter, 12415 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4741 SdHoareTripleChecker+Valid, 16578 SdHoareTripleChecker+Invalid, 1250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:28:43,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4741 Valid, 16578 Invalid, 1250 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [88 Valid, 1162 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-16 12:28:43,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2660 states. [2022-11-16 12:28:43,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2660 to 2529. [2022-11-16 12:28:43,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2529 states, 2479 states have (on average 1.8217022993142395) internal successors, (4516), 2483 states have internal predecessors, (4516), 35 states have call successors, (35), 13 states have call predecessors, (35), 13 states have return successors, (36), 33 states have call predecessors, (36), 33 states have call successors, (36) [2022-11-16 12:28:43,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2529 states to 2529 states and 4587 transitions. [2022-11-16 12:28:43,973 INFO L78 Accepts]: Start accepts. Automaton has 2529 states and 4587 transitions. Word has length 102 [2022-11-16 12:28:43,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:28:43,974 INFO L495 AbstractCegarLoop]: Abstraction has 2529 states and 4587 transitions. [2022-11-16 12:28:43,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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) [2022-11-16 12:28:43,975 INFO L276 IsEmpty]: Start isEmpty. Operand 2529 states and 4587 transitions. [2022-11-16 12:28:43,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-16 12:28:43,978 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:28:43,978 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:43,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:28:43,979 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:28:43,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:43,980 INFO L85 PathProgramCache]: Analyzing trace with hash -389078092, now seen corresponding path program 1 times [2022-11-16 12:28:43,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:43,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492174867] [2022-11-16 12:28:43,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:43,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:43,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:44,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:28:44,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:44,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 12:28:44,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:44,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 12:28:44,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:44,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 12:28:44,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:44,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 12:28:44,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:44,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:28:44,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:44,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492174867] [2022-11-16 12:28:44,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492174867] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:44,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:28:44,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:28:44,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281033552] [2022-11-16 12:28:44,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:44,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:28:44,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:44,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:28:44,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:28:44,325 INFO L87 Difference]: Start difference. First operand 2529 states and 4587 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-11-16 12:28:46,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:28:46,940 INFO L93 Difference]: Finished difference Result 3324 states and 5839 transitions. [2022-11-16 12:28:46,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:28:46,941 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2022-11-16 12:28:46,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:28:46,957 INFO L225 Difference]: With dead ends: 3324 [2022-11-16 12:28:46,958 INFO L226 Difference]: Without dead ends: 2929 [2022-11-16 12:28:46,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:28:46,971 INFO L413 NwaCegarLoop]: 4279 mSDtfsCounter, 4742 mSDsluCounter, 16891 mSDsCounter, 0 mSdLazyCounter, 1757 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4754 SdHoareTripleChecker+Valid, 21170 SdHoareTripleChecker+Invalid, 1810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:28:46,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4754 Valid, 21170 Invalid, 1810 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [53 Valid, 1757 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-16 12:28:46,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2929 states. [2022-11-16 12:28:47,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2929 to 2715. [2022-11-16 12:28:47,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2715 states, 2644 states have (on average 1.8037065052950076) internal successors, (4769), 2649 states have internal predecessors, (4769), 49 states have call successors, (49), 19 states have call predecessors, (49), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2022-11-16 12:28:47,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2715 states to 2715 states and 4870 transitions. [2022-11-16 12:28:47,138 INFO L78 Accepts]: Start accepts. Automaton has 2715 states and 4870 transitions. Word has length 102 [2022-11-16 12:28:47,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:28:47,140 INFO L495 AbstractCegarLoop]: Abstraction has 2715 states and 4870 transitions. [2022-11-16 12:28:47,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-11-16 12:28:47,141 INFO L276 IsEmpty]: Start isEmpty. Operand 2715 states and 4870 transitions. [2022-11-16 12:28:47,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-16 12:28:47,149 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:28:47,150 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:47,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:28:47,150 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:28:47,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:47,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1487404726, now seen corresponding path program 1 times [2022-11-16 12:28:47,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:47,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419238631] [2022-11-16 12:28:47,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:47,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:47,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:47,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:28:47,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:47,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 12:28:47,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:47,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 12:28:47,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:47,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 12:28:47,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:47,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 12:28:47,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:47,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:28:47,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:47,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419238631] [2022-11-16 12:28:47,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419238631] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:47,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:28:47,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:28:47,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183211313] [2022-11-16 12:28:47,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:47,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:28:47,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:47,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:28:47,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:28:47,423 INFO L87 Difference]: Start difference. First operand 2715 states and 4870 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-11-16 12:28:49,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:28:49,692 INFO L93 Difference]: Finished difference Result 4012 states and 6910 transitions. [2022-11-16 12:28:49,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:28:49,693 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2022-11-16 12:28:49,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:28:49,713 INFO L225 Difference]: With dead ends: 4012 [2022-11-16 12:28:49,716 INFO L226 Difference]: Without dead ends: 3431 [2022-11-16 12:28:49,720 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 [2022-11-16 12:28:49,730 INFO L413 NwaCegarLoop]: 4277 mSDtfsCounter, 4736 mSDsluCounter, 16891 mSDsCounter, 0 mSdLazyCounter, 1736 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4748 SdHoareTripleChecker+Valid, 21168 SdHoareTripleChecker+Invalid, 1791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:28:49,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4748 Valid, 21168 Invalid, 1791 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [55 Valid, 1736 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-16 12:28:49,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3431 states. [2022-11-16 12:28:49,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3431 to 3091. [2022-11-16 12:28:49,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3091 states, 2978 states have (on average 1.77367360644728) internal successors, (5282), 2985 states have internal predecessors, (5282), 77 states have call successors, (77), 31 states have call predecessors, (77), 34 states have return successors, (88), 78 states have call predecessors, (88), 75 states have call successors, (88) [2022-11-16 12:28:49,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3091 states to 3091 states and 5447 transitions. [2022-11-16 12:28:49,950 INFO L78 Accepts]: Start accepts. Automaton has 3091 states and 5447 transitions. Word has length 102 [2022-11-16 12:28:49,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:28:49,956 INFO L495 AbstractCegarLoop]: Abstraction has 3091 states and 5447 transitions. [2022-11-16 12:28:49,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-11-16 12:28:49,957 INFO L276 IsEmpty]: Start isEmpty. Operand 3091 states and 5447 transitions. [2022-11-16 12:28:49,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-16 12:28:49,959 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:28:49,960 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:49,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:28:49,960 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:28:49,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:49,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1482706376, now seen corresponding path program 1 times [2022-11-16 12:28:49,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:49,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791415926] [2022-11-16 12:28:49,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:49,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:49,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:50,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:28:50,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:50,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 12:28:50,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:50,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 12:28:50,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:50,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 12:28:50,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:50,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 12:28:50,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:50,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:28:50,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:50,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791415926] [2022-11-16 12:28:50,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791415926] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:50,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:28:50,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:28:50,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491782576] [2022-11-16 12:28:50,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:50,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:28:50,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:50,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:28:50,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:28:50,210 INFO L87 Difference]: Start difference. First operand 3091 states and 5447 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-11-16 12:28:52,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:28:52,570 INFO L93 Difference]: Finished difference Result 5346 states and 8979 transitions. [2022-11-16 12:28:52,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:28:52,571 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2022-11-16 12:28:52,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:28:52,589 INFO L225 Difference]: With dead ends: 5346 [2022-11-16 12:28:52,589 INFO L226 Difference]: Without dead ends: 4389 [2022-11-16 12:28:52,593 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 [2022-11-16 12:28:52,593 INFO L413 NwaCegarLoop]: 4277 mSDtfsCounter, 4735 mSDsluCounter, 16891 mSDsCounter, 0 mSdLazyCounter, 1723 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4747 SdHoareTripleChecker+Valid, 21168 SdHoareTripleChecker+Invalid, 1778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:28:52,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4747 Valid, 21168 Invalid, 1778 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [55 Valid, 1723 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-16 12:28:52,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4389 states. [2022-11-16 12:28:52,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4389 to 3844. [2022-11-16 12:28:52,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3844 states, 3647 states have (on average 1.7296408006580752) internal successors, (6308), 3658 states have internal predecessors, (6308), 133 states have call successors, (133), 55 states have call predecessors, (133), 62 states have return successors, (166), 138 states have call predecessors, (166), 131 states have call successors, (166) [2022-11-16 12:28:52,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3844 states to 3844 states and 6607 transitions. [2022-11-16 12:28:52,814 INFO L78 Accepts]: Start accepts. Automaton has 3844 states and 6607 transitions. Word has length 102 [2022-11-16 12:28:52,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:28:52,815 INFO L495 AbstractCegarLoop]: Abstraction has 3844 states and 6607 transitions. [2022-11-16 12:28:52,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-11-16 12:28:52,815 INFO L276 IsEmpty]: Start isEmpty. Operand 3844 states and 6607 transitions. [2022-11-16 12:28:52,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-16 12:28:52,817 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:28:52,818 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:52,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:28:52,819 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:28:52,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:52,819 INFO L85 PathProgramCache]: Analyzing trace with hash 84051574, now seen corresponding path program 1 times [2022-11-16 12:28:52,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:52,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265942634] [2022-11-16 12:28:52,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:52,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:52,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:52,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:28:52,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:52,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 12:28:52,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:52,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 12:28:52,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:52,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 12:28:53,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:53,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 12:28:53,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:53,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:28:53,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:53,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265942634] [2022-11-16 12:28:53,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265942634] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:53,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:28:53,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:28:53,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95402868] [2022-11-16 12:28:53,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:53,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:28:53,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:53,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:28:53,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:28:53,013 INFO L87 Difference]: Start difference. First operand 3844 states and 6607 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-11-16 12:28:55,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:28:55,293 INFO L93 Difference]: Finished difference Result 8013 states and 13133 transitions. [2022-11-16 12:28:55,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:28:55,293 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2022-11-16 12:28:55,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:28:55,330 INFO L225 Difference]: With dead ends: 8013 [2022-11-16 12:28:55,330 INFO L226 Difference]: Without dead ends: 6303 [2022-11-16 12:28:55,337 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 [2022-11-16 12:28:55,339 INFO L413 NwaCegarLoop]: 4277 mSDtfsCounter, 4734 mSDsluCounter, 16891 mSDsCounter, 0 mSdLazyCounter, 1710 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4746 SdHoareTripleChecker+Valid, 21168 SdHoareTripleChecker+Invalid, 1765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:28:55,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4746 Valid, 21168 Invalid, 1765 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [55 Valid, 1710 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-16 12:28:55,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6303 states. [2022-11-16 12:28:55,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6303 to 5357. [2022-11-16 12:28:55,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5357 states, 4992 states have (on average 1.6766826923076923) internal successors, (8370), 5011 states have internal predecessors, (8370), 245 states have call successors, (245), 103 states have call predecessors, (245), 118 states have return successors, (340), 258 states have call predecessors, (340), 243 states have call successors, (340) [2022-11-16 12:28:55,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5357 states to 5357 states and 8955 transitions. [2022-11-16 12:28:55,679 INFO L78 Accepts]: Start accepts. Automaton has 5357 states and 8955 transitions. Word has length 102 [2022-11-16 12:28:55,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:28:55,680 INFO L495 AbstractCegarLoop]: Abstraction has 5357 states and 8955 transitions. [2022-11-16 12:28:55,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-11-16 12:28:55,680 INFO L276 IsEmpty]: Start isEmpty. Operand 5357 states and 8955 transitions. [2022-11-16 12:28:55,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-16 12:28:55,683 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:28:55,684 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:55,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:28:55,684 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:28:55,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:55,689 INFO L85 PathProgramCache]: Analyzing trace with hash -973786504, now seen corresponding path program 1 times [2022-11-16 12:28:55,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:55,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417129782] [2022-11-16 12:28:55,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:55,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:55,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:55,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:28:55,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:55,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 12:28:55,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:55,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 12:28:55,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:55,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 12:28:55,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:55,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 12:28:55,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:55,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:28:55,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:55,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417129782] [2022-11-16 12:28:55,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417129782] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:55,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:28:55,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:28:55,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287307670] [2022-11-16 12:28:55,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:55,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:28:55,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:55,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:28:55,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:28:55,962 INFO L87 Difference]: Start difference. First operand 5357 states and 8955 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-11-16 12:28:59,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:28:59,074 INFO L93 Difference]: Finished difference Result 14612 states and 23393 transitions. [2022-11-16 12:28:59,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:28:59,074 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2022-11-16 12:28:59,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:28:59,133 INFO L225 Difference]: With dead ends: 14612 [2022-11-16 12:28:59,133 INFO L226 Difference]: Without dead ends: 11389 [2022-11-16 12:28:59,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:28:59,146 INFO L413 NwaCegarLoop]: 4168 mSDtfsCounter, 4998 mSDsluCounter, 16535 mSDsCounter, 0 mSdLazyCounter, 1514 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5016 SdHoareTripleChecker+Valid, 20703 SdHoareTripleChecker+Invalid, 1596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:28:59,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5016 Valid, 20703 Invalid, 1596 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [82 Valid, 1514 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-16 12:28:59,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11389 states. [2022-11-16 12:28:59,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11389 to 8350. [2022-11-16 12:28:59,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8350 states, 7665 states have (on average 1.6287018917155904) internal successors, (12484), 7700 states have internal predecessors, (12484), 453 states have call successors, (453), 199 states have call predecessors, (453), 230 states have return successors, (726), 482 states have call predecessors, (726), 451 states have call successors, (726) [2022-11-16 12:28:59,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8350 states to 8350 states and 13663 transitions. [2022-11-16 12:28:59,812 INFO L78 Accepts]: Start accepts. Automaton has 8350 states and 13663 transitions. Word has length 102 [2022-11-16 12:28:59,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:28:59,813 INFO L495 AbstractCegarLoop]: Abstraction has 8350 states and 13663 transitions. [2022-11-16 12:28:59,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-11-16 12:28:59,814 INFO L276 IsEmpty]: Start isEmpty. Operand 8350 states and 13663 transitions. [2022-11-16 12:28:59,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-16 12:28:59,819 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:28:59,820 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:59,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:28:59,823 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:28:59,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:59,824 INFO L85 PathProgramCache]: Analyzing trace with hash -2116288970, now seen corresponding path program 1 times [2022-11-16 12:28:59,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:59,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62752693] [2022-11-16 12:28:59,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:59,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:59,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:59,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:28:59,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:59,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 12:28:59,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:00,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 12:29:00,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:00,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 12:29:00,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:00,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 12:29:00,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:00,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:29:00,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:29:00,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62752693] [2022-11-16 12:29:00,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62752693] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:29:00,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:29:00,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:29:00,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645062730] [2022-11-16 12:29:00,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:29:00,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:29:00,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:29:00,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:29:00,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:29:00,040 INFO L87 Difference]: Start difference. First operand 8350 states and 13663 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-11-16 12:29:03,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:29:03,985 INFO L93 Difference]: Finished difference Result 26019 states and 41415 transitions. [2022-11-16 12:29:03,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:29:03,986 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2022-11-16 12:29:03,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:29:04,058 INFO L225 Difference]: With dead ends: 26019 [2022-11-16 12:29:04,058 INFO L226 Difference]: Without dead ends: 19803 [2022-11-16 12:29:04,079 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 [2022-11-16 12:29:04,080 INFO L413 NwaCegarLoop]: 4274 mSDtfsCounter, 4774 mSDsluCounter, 16880 mSDsCounter, 0 mSdLazyCounter, 1986 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4785 SdHoareTripleChecker+Valid, 21154 SdHoareTripleChecker+Invalid, 2043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:29:04,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4785 Valid, 21154 Invalid, 2043 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [57 Valid, 1986 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-16 12:29:04,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19803 states. [2022-11-16 12:29:05,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19803 to 13999. [2022-11-16 12:29:05,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13999 states, 12690 states have (on average 1.5878644602048857) internal successors, (20150), 12757 states have internal predecessors, (20150), 853 states have call successors, (853), 391 states have call predecessors, (853), 454 states have return successors, (1644), 914 states have call predecessors, (1644), 851 states have call successors, (1644) [2022-11-16 12:29:05,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13999 states to 13999 states and 22647 transitions. [2022-11-16 12:29:05,389 INFO L78 Accepts]: Start accepts. Automaton has 13999 states and 22647 transitions. Word has length 102 [2022-11-16 12:29:05,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:29:05,390 INFO L495 AbstractCegarLoop]: Abstraction has 13999 states and 22647 transitions. [2022-11-16 12:29:05,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-11-16 12:29:05,390 INFO L276 IsEmpty]: Start isEmpty. Operand 13999 states and 22647 transitions. [2022-11-16 12:29:05,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-16 12:29:05,399 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:29:05,400 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:05,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:29:05,400 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:29:05,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:05,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1876049224, now seen corresponding path program 1 times [2022-11-16 12:29:05,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:29:05,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16382086] [2022-11-16 12:29:05,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:05,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:29:05,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:05,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:29:05,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:05,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 12:29:05,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:05,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 12:29:05,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:05,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 12:29:05,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:05,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 12:29:05,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:05,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:29:05,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:29:05,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16382086] [2022-11-16 12:29:05,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16382086] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:29:05,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:29:05,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:29:05,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600593627] [2022-11-16 12:29:05,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:29:05,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:29:05,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:29:05,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:29:05,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:29:05,555 INFO L87 Difference]: Start difference. First operand 13999 states and 22647 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-11-16 12:29:10,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:29:10,773 INFO L93 Difference]: Finished difference Result 47282 states and 75405 transitions. [2022-11-16 12:29:10,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:29:10,773 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2022-11-16 12:29:10,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:29:10,933 INFO L225 Difference]: With dead ends: 47282 [2022-11-16 12:29:10,933 INFO L226 Difference]: Without dead ends: 35417 [2022-11-16 12:29:10,988 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 [2022-11-16 12:29:10,990 INFO L413 NwaCegarLoop]: 4275 mSDtfsCounter, 4866 mSDsluCounter, 16883 mSDsCounter, 0 mSdLazyCounter, 1664 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4884 SdHoareTripleChecker+Valid, 21158 SdHoareTripleChecker+Invalid, 1724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:29:10,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4884 Valid, 21158 Invalid, 1724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1664 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-16 12:29:11,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35417 states. [2022-11-16 12:29:13,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35417 to 25584. [2022-11-16 12:29:13,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25584 states, 23059 states have (on average 1.5650288390650071) internal successors, (36088), 23190 states have internal predecessors, (36088), 1621 states have call successors, (1621), 775 states have call predecessors, (1621), 902 states have return successors, (3934), 1746 states have call predecessors, (3934), 1619 states have call successors, (3934) [2022-11-16 12:29:13,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25584 states to 25584 states and 41643 transitions. [2022-11-16 12:29:13,450 INFO L78 Accepts]: Start accepts. Automaton has 25584 states and 41643 transitions. Word has length 102 [2022-11-16 12:29:13,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:29:13,450 INFO L495 AbstractCegarLoop]: Abstraction has 25584 states and 41643 transitions. [2022-11-16 12:29:13,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-11-16 12:29:13,450 INFO L276 IsEmpty]: Start isEmpty. Operand 25584 states and 41643 transitions. [2022-11-16 12:29:13,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-16 12:29:13,474 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:29:13,474 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:13,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:29:13,475 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:29:13,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:13,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1037015562, now seen corresponding path program 1 times [2022-11-16 12:29:13,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:29:13,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050866430] [2022-11-16 12:29:13,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:13,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:29:13,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:13,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:29:13,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:13,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 12:29:13,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:13,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 12:29:13,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:13,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 12:29:13,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:13,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 12:29:13,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:13,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:29:13,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:29:13,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050866430] [2022-11-16 12:29:13,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050866430] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:29:13,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:29:13,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:29:13,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599838254] [2022-11-16 12:29:13,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:29:13,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:29:13,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:29:13,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:29:13,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:29:13,665 INFO L87 Difference]: Start difference. First operand 25584 states and 41643 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-11-16 12:29:22,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:29:22,581 INFO L93 Difference]: Finished difference Result 89521 states and 145107 transitions. [2022-11-16 12:29:22,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:29:22,582 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2022-11-16 12:29:22,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:29:22,886 INFO L225 Difference]: With dead ends: 89521 [2022-11-16 12:29:22,886 INFO L226 Difference]: Without dead ends: 66071 [2022-11-16 12:29:22,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:29:22,968 INFO L413 NwaCegarLoop]: 4275 mSDtfsCounter, 4832 mSDsluCounter, 16883 mSDsCounter, 0 mSdLazyCounter, 1646 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4850 SdHoareTripleChecker+Valid, 21158 SdHoareTripleChecker+Invalid, 1706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:29:22,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4850 Valid, 21158 Invalid, 1706 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [60 Valid, 1646 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-16 12:29:23,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66071 states. [2022-11-16 12:29:28,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66071 to 48689. [2022-11-16 12:29:28,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48689 states, 43796 states have (on average 1.553246871860444) internal successors, (68026), 44055 states have internal predecessors, (68026), 3093 states have call successors, (3093), 1543 states have call predecessors, (3093), 1798 states have return successors, (9908), 3346 states have call predecessors, (9908), 3091 states have call successors, (9908) [2022-11-16 12:29:28,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48689 states to 48689 states and 81027 transitions. [2022-11-16 12:29:28,228 INFO L78 Accepts]: Start accepts. Automaton has 48689 states and 81027 transitions. Word has length 102 [2022-11-16 12:29:28,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:29:28,228 INFO L495 AbstractCegarLoop]: Abstraction has 48689 states and 81027 transitions. [2022-11-16 12:29:28,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-11-16 12:29:28,229 INFO L276 IsEmpty]: Start isEmpty. Operand 48689 states and 81027 transitions. [2022-11-16 12:29:28,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-16 12:29:28,449 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:29:28,449 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:28,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:29:28,449 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:29:28,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:28,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1009949960, now seen corresponding path program 1 times [2022-11-16 12:29:28,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:29:28,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883638806] [2022-11-16 12:29:28,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:28,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:29:28,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:28,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:29:28,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:28,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 12:29:28,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:28,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 12:29:28,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:28,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 12:29:28,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:28,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 12:29:28,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:28,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:29:28,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:29:28,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883638806] [2022-11-16 12:29:28,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883638806] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:29:28,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:29:28,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:29:28,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318969283] [2022-11-16 12:29:28,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:29:28,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:29:28,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:29:28,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:29:28,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:29:28,656 INFO L87 Difference]: Start difference. First operand 48689 states and 81027 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-11-16 12:29:35,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:29:35,919 INFO L93 Difference]: Finished difference Result 107098 states and 182436 transitions. [2022-11-16 12:29:35,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:29:35,919 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2022-11-16 12:29:35,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:29:36,104 INFO L225 Difference]: With dead ends: 107098 [2022-11-16 12:29:36,105 INFO L226 Difference]: Without dead ends: 60543 [2022-11-16 12:29:36,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:29:36,214 INFO L413 NwaCegarLoop]: 4127 mSDtfsCounter, 4541 mSDsluCounter, 16349 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4554 SdHoareTripleChecker+Valid, 20476 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:29:36,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4554 Valid, 20476 Invalid, 863 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [58 Valid, 805 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 12:29:36,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60543 states.