./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.04.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_bf087c73-bb5c-4baa-a79c-3d34c078fc2f/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf087c73-bb5c-4baa-a79c-3d34c078fc2f/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf087c73-bb5c-4baa-a79c-3d34c078fc2f/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf087c73-bb5c-4baa-a79c-3d34c078fc2f/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.04.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf087c73-bb5c-4baa-a79c-3d34c078fc2f/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf087c73-bb5c-4baa-a79c-3d34c078fc2f/bin/uautomizer-ZsLfNo2U6R --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 37139db5f2012b0b7a96ab437e26855d856636bc4064d013c0b416905ff6e54c --- 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-38b53e6 [2022-11-25 17:35:28,601 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:35:28,604 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:35:28,650 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:35:28,650 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:35:28,655 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:35:28,656 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:35:28,658 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:35:28,659 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:35:28,660 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:35:28,661 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:35:28,663 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:35:28,663 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:35:28,664 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:35:28,665 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:35:28,669 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:35:28,671 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:35:28,677 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:35:28,680 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:35:28,687 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:35:28,691 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:35:28,694 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:35:28,696 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:35:28,697 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:35:28,708 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:35:28,709 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:35:28,709 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:35:28,711 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:35:28,711 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:35:28,714 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:35:28,714 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:35:28,715 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:35:28,717 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:35:28,719 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:35:28,720 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:35:28,720 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:35:28,721 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:35:28,722 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:35:28,722 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:35:28,724 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:35:28,725 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:35:28,726 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf087c73-bb5c-4baa-a79c-3d34c078fc2f/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 17:35:28,768 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:35:28,768 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:35:28,769 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:35:28,770 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:35:28,771 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:35:28,771 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:35:28,772 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:35:28,772 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:35:28,772 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:35:28,773 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:35:28,774 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:35:28,774 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:35:28,775 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:35:28,775 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:35:28,775 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:35:28,775 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:35:28,776 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:35:28,776 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:35:28,776 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:35:28,776 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:35:28,777 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:35:28,777 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:35:28,777 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:35:28,777 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:35:28,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:35:28,778 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:35:28,778 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:35:28,778 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:35:28,779 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:35:28,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:35:28,779 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:35:28,780 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:35:28,780 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:35:28,780 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:35:28,781 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_bf087c73-bb5c-4baa-a79c-3d34c078fc2f/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf087c73-bb5c-4baa-a79c-3d34c078fc2f/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37139db5f2012b0b7a96ab437e26855d856636bc4064d013c0b416905ff6e54c [2022-11-25 17:35:29,051 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:35:29,089 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:35:29,092 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:35:29,093 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:35:29,094 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:35:29,095 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf087c73-bb5c-4baa-a79c-3d34c078fc2f/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.04.cil-1.c [2022-11-25 17:35:32,227 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:35:32,458 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:35:32,458 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf087c73-bb5c-4baa-a79c-3d34c078fc2f/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.04.cil-1.c [2022-11-25 17:35:32,472 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf087c73-bb5c-4baa-a79c-3d34c078fc2f/bin/uautomizer-ZsLfNo2U6R/data/9fb9dfd91/764f8be4b8d24e0dbc915b44bc8f2dff/FLAGfc50a564b [2022-11-25 17:35:32,491 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf087c73-bb5c-4baa-a79c-3d34c078fc2f/bin/uautomizer-ZsLfNo2U6R/data/9fb9dfd91/764f8be4b8d24e0dbc915b44bc8f2dff [2022-11-25 17:35:32,494 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:35:32,496 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:35:32,498 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:35:32,498 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:35:32,502 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:35:32,503 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:35:32" (1/1) ... [2022-11-25 17:35:32,504 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e9560aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:35:32, skipping insertion in model container [2022-11-25 17:35:32,505 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:35:32" (1/1) ... [2022-11-25 17:35:32,513 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:35:32,553 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:35:32,699 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf087c73-bb5c-4baa-a79c-3d34c078fc2f/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.04.cil-1.c[911,924] [2022-11-25 17:35:32,780 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf087c73-bb5c-4baa-a79c-3d34c078fc2f/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.04.cil-1.c[8416,8429] [2022-11-25 17:35:32,837 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:35:32,851 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:35:32,865 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf087c73-bb5c-4baa-a79c-3d34c078fc2f/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.04.cil-1.c[911,924] [2022-11-25 17:35:32,894 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf087c73-bb5c-4baa-a79c-3d34c078fc2f/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.04.cil-1.c[8416,8429] [2022-11-25 17:35:32,934 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:35:32,956 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:35:32,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:35:32 WrapperNode [2022-11-25 17:35:32,957 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:35:32,958 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:35:32,959 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:35:32,959 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:35:32,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:35:32" (1/1) ... [2022-11-25 17:35:32,980 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:35:32" (1/1) ... [2022-11-25 17:35:33,055 INFO L138 Inliner]: procedures = 63, calls = 73, calls flagged for inlining = 32, calls inlined = 32, statements flattened = 614 [2022-11-25 17:35:33,065 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:35:33,066 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:35:33,067 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:35:33,067 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:35:33,078 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:35:32" (1/1) ... [2022-11-25 17:35:33,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:35:32" (1/1) ... [2022-11-25 17:35:33,089 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:35:32" (1/1) ... [2022-11-25 17:35:33,089 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:35:32" (1/1) ... [2022-11-25 17:35:33,101 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:35:32" (1/1) ... [2022-11-25 17:35:33,113 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:35:32" (1/1) ... [2022-11-25 17:35:33,116 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:35:32" (1/1) ... [2022-11-25 17:35:33,119 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:35:32" (1/1) ... [2022-11-25 17:35:33,124 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:35:33,125 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:35:33,125 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:35:33,125 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:35:33,126 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:35:32" (1/1) ... [2022-11-25 17:35:33,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:35:33,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf087c73-bb5c-4baa-a79c-3d34c078fc2f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:35:33,162 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf087c73-bb5c-4baa-a79c-3d34c078fc2f/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:35:33,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf087c73-bb5c-4baa-a79c-3d34c078fc2f/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:35:33,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:35:33,221 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-25 17:35:33,221 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-25 17:35:33,221 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-11-25 17:35:33,222 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-11-25 17:35:33,222 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-11-25 17:35:33,222 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-11-25 17:35:33,222 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-11-25 17:35:33,223 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-11-25 17:35:33,223 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-11-25 17:35:33,223 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-11-25 17:35:33,223 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-11-25 17:35:33,223 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-11-25 17:35:33,224 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-11-25 17:35:33,224 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-11-25 17:35:33,224 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-11-25 17:35:33,224 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-11-25 17:35:33,224 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-11-25 17:35:33,225 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-11-25 17:35:33,225 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-11-25 17:35:33,225 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-11-25 17:35:33,225 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-11-25 17:35:33,225 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-11-25 17:35:33,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:35:33,226 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-11-25 17:35:33,226 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-11-25 17:35:33,226 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-11-25 17:35:33,227 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-11-25 17:35:33,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:35:33,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:35:33,227 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-11-25 17:35:33,228 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-11-25 17:35:33,353 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:35:33,355 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:35:34,222 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2022-11-25 17:35:34,223 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2022-11-25 17:35:34,320 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:35:34,336 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:35:34,340 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-11-25 17:35:34,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:35:34 BoogieIcfgContainer [2022-11-25 17:35:34,345 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:35:34,349 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:35:34,349 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:35:34,352 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:35:34,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:35:32" (1/3) ... [2022-11-25 17:35:34,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f0228e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:35:34, skipping insertion in model container [2022-11-25 17:35:34,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:35:32" (2/3) ... [2022-11-25 17:35:34,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f0228e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:35:34, skipping insertion in model container [2022-11-25 17:35:34,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:35:34" (3/3) ... [2022-11-25 17:35:34,364 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.04.cil-1.c [2022-11-25 17:35:34,386 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:35:34,387 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 17:35:34,485 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:35:34,492 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;@5f089ff0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:35:34,493 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 17:35:34,501 INFO L276 IsEmpty]: Start isEmpty. Operand has 299 states, 248 states have (on average 1.5846774193548387) internal successors, (393), 254 states have internal predecessors, (393), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2022-11-25 17:35:34,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-25 17:35:34,522 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:35:34,523 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:35:34,524 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:35:34,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:35:34,529 INFO L85 PathProgramCache]: Analyzing trace with hash 864909050, now seen corresponding path program 1 times [2022-11-25 17:35:34,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:35:34,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685537146] [2022-11-25 17:35:34,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:35:34,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:35:34,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:35,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:35:35,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:35,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:35:35,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:35,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 17:35:35,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:35,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:35:35,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:35,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-25 17:35:35,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:35,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-25 17:35:35,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:35,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-25 17:35:35,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:35,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:35:35,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:35:35,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685537146] [2022-11-25 17:35:35,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685537146] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:35:35,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:35:35,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 17:35:35,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884629832] [2022-11-25 17:35:35,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:35:35,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 17:35:35,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:35:35,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 17:35:35,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:35:35,419 INFO L87 Difference]: Start difference. First operand has 299 states, 248 states have (on average 1.5846774193548387) internal successors, (393), 254 states have internal predecessors, (393), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-25 17:35:37,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:35:37,280 INFO L93 Difference]: Finished difference Result 764 states and 1182 transitions. [2022-11-25 17:35:37,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-25 17:35:37,286 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-11-25 17:35:37,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:35:37,304 INFO L225 Difference]: With dead ends: 764 [2022-11-25 17:35:37,305 INFO L226 Difference]: Without dead ends: 475 [2022-11-25 17:35:37,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-11-25 17:35:37,320 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 1066 mSDsluCounter, 1117 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1091 SdHoareTripleChecker+Valid, 1449 SdHoareTripleChecker+Invalid, 1397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-25 17:35:37,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1091 Valid, 1449 Invalid, 1397 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [173 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-25 17:35:37,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2022-11-25 17:35:37,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 405. [2022-11-25 17:35:37,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 333 states have (on average 1.4804804804804805) internal successors, (493), 340 states have internal predecessors, (493), 47 states have call successors, (47), 21 states have call predecessors, (47), 23 states have return successors, (56), 46 states have call predecessors, (56), 45 states have call successors, (56) [2022-11-25 17:35:37,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 596 transitions. [2022-11-25 17:35:37,460 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 596 transitions. Word has length 65 [2022-11-25 17:35:37,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:35:37,461 INFO L495 AbstractCegarLoop]: Abstraction has 405 states and 596 transitions. [2022-11-25 17:35:37,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-25 17:35:37,462 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 596 transitions. [2022-11-25 17:35:37,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-25 17:35:37,475 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:35:37,476 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:35:37,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:35:37,477 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:35:37,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:35:37,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1163677060, now seen corresponding path program 1 times [2022-11-25 17:35:37,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:35:37,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331428526] [2022-11-25 17:35:37,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:35:37,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:35:37,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:37,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:35:37,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:37,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:35:37,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:37,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 17:35:37,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:37,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:35:37,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:37,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-25 17:35:37,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:37,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-25 17:35:37,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:37,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-25 17:35:37,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:37,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:35:37,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:35:37,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331428526] [2022-11-25 17:35:37,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331428526] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:35:37,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:35:37,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-25 17:35:37,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518051556] [2022-11-25 17:35:37,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:35:37,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 17:35:37,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:35:37,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 17:35:37,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:35:37,784 INFO L87 Difference]: Start difference. First operand 405 states and 596 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-25 17:35:40,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:35:40,355 INFO L93 Difference]: Finished difference Result 1498 states and 2175 transitions. [2022-11-25 17:35:40,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-25 17:35:40,356 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 65 [2022-11-25 17:35:40,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:35:40,373 INFO L225 Difference]: With dead ends: 1498 [2022-11-25 17:35:40,374 INFO L226 Difference]: Without dead ends: 1273 [2022-11-25 17:35:40,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-11-25 17:35:40,381 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 2444 mSDsluCounter, 1715 mSDsCounter, 0 mSdLazyCounter, 1971 mSolverCounterSat, 529 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2462 SdHoareTripleChecker+Valid, 2097 SdHoareTripleChecker+Invalid, 2500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 529 IncrementalHoareTripleChecker+Valid, 1971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-25 17:35:40,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2462 Valid, 2097 Invalid, 2500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [529 Valid, 1971 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-25 17:35:40,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2022-11-25 17:35:40,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 1177. [2022-11-25 17:35:40,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 951 states have (on average 1.4111461619348056) internal successors, (1342), 971 states have internal predecessors, (1342), 130 states have call successors, (130), 81 states have call predecessors, (130), 94 states have return successors, (161), 127 states have call predecessors, (161), 128 states have call successors, (161) [2022-11-25 17:35:40,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1633 transitions. [2022-11-25 17:35:40,531 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1633 transitions. Word has length 65 [2022-11-25 17:35:40,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:35:40,532 INFO L495 AbstractCegarLoop]: Abstraction has 1177 states and 1633 transitions. [2022-11-25 17:35:40,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-25 17:35:40,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1633 transitions. [2022-11-25 17:35:40,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-25 17:35:40,541 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:35:40,542 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:35:40,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:35:40,542 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:35:40,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:35:40,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1733422016, now seen corresponding path program 1 times [2022-11-25 17:35:40,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:35:40,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031536154] [2022-11-25 17:35:40,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:35:40,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:35:40,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:40,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:35:40,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:40,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:35:40,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:40,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 17:35:40,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:40,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:35:40,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:40,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-25 17:35:40,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:40,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 17:35:40,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:40,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-25 17:35:40,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:40,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:35:40,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:35:40,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031536154] [2022-11-25 17:35:40,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031536154] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:35:40,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:35:40,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 17:35:40,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963273598] [2022-11-25 17:35:40,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:35:40,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 17:35:40,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:35:40,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 17:35:40,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:35:40,830 INFO L87 Difference]: Start difference. First operand 1177 states and 1633 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 17:35:42,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:35:42,075 INFO L93 Difference]: Finished difference Result 2277 states and 3157 transitions. [2022-11-25 17:35:42,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 17:35:42,076 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-11-25 17:35:42,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:35:42,083 INFO L225 Difference]: With dead ends: 2277 [2022-11-25 17:35:42,083 INFO L226 Difference]: Without dead ends: 1287 [2022-11-25 17:35:42,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-25 17:35:42,087 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 350 mSDsluCounter, 1448 mSDsCounter, 0 mSdLazyCounter, 1226 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 1707 SdHoareTripleChecker+Invalid, 1303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:35:42,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 1707 Invalid, 1303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1226 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-25 17:35:42,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287 states. [2022-11-25 17:35:42,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287 to 1217. [2022-11-25 17:35:42,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 983 states have (on average 1.3957273652085453) internal successors, (1372), 1003 states have internal predecessors, (1372), 130 states have call successors, (130), 81 states have call predecessors, (130), 102 states have return successors, (169), 135 states have call predecessors, (169), 128 states have call successors, (169) [2022-11-25 17:35:42,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1671 transitions. [2022-11-25 17:35:42,204 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1671 transitions. Word has length 66 [2022-11-25 17:35:42,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:35:42,205 INFO L495 AbstractCegarLoop]: Abstraction has 1217 states and 1671 transitions. [2022-11-25 17:35:42,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 17:35:42,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1671 transitions. [2022-11-25 17:35:42,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-25 17:35:42,207 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:35:42,207 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:35:42,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 17:35:42,208 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:35:42,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:35:42,208 INFO L85 PathProgramCache]: Analyzing trace with hash 704062718, now seen corresponding path program 1 times [2022-11-25 17:35:42,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:35:42,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423858022] [2022-11-25 17:35:42,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:35:42,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:35:42,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:42,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:35:42,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:42,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:35:42,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:42,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 17:35:42,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:42,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:35:42,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:42,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-25 17:35:42,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:42,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 17:35:42,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:42,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-25 17:35:42,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:42,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:35:42,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:35:42,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423858022] [2022-11-25 17:35:42,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423858022] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:35:42,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:35:42,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-25 17:35:42,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589586929] [2022-11-25 17:35:42,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:35:42,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 17:35:42,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:35:42,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 17:35:42,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:35:42,450 INFO L87 Difference]: Start difference. First operand 1217 states and 1671 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-25 17:35:45,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:35:45,003 INFO L93 Difference]: Finished difference Result 3887 states and 5372 transitions. [2022-11-25 17:35:45,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-25 17:35:45,003 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 66 [2022-11-25 17:35:45,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:35:45,013 INFO L225 Difference]: With dead ends: 3887 [2022-11-25 17:35:45,013 INFO L226 Difference]: Without dead ends: 1607 [2022-11-25 17:35:45,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-11-25 17:35:45,032 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 2605 mSDsluCounter, 1629 mSDsCounter, 0 mSdLazyCounter, 1857 mSolverCounterSat, 561 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2623 SdHoareTripleChecker+Valid, 1986 SdHoareTripleChecker+Invalid, 2418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 561 IncrementalHoareTripleChecker+Valid, 1857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-25 17:35:45,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2623 Valid, 1986 Invalid, 2418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [561 Valid, 1857 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-25 17:35:45,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1607 states. [2022-11-25 17:35:45,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1607 to 1483. [2022-11-25 17:35:45,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1483 states, 1173 states have (on average 1.3529411764705883) internal successors, (1587), 1197 states have internal predecessors, (1587), 170 states have call successors, (170), 109 states have call predecessors, (170), 138 states have return successors, (221), 179 states have call predecessors, (221), 168 states have call successors, (221) [2022-11-25 17:35:45,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1483 states to 1483 states and 1978 transitions. [2022-11-25 17:35:45,187 INFO L78 Accepts]: Start accepts. Automaton has 1483 states and 1978 transitions. Word has length 66 [2022-11-25 17:35:45,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:35:45,188 INFO L495 AbstractCegarLoop]: Abstraction has 1483 states and 1978 transitions. [2022-11-25 17:35:45,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-25 17:35:45,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1483 states and 1978 transitions. [2022-11-25 17:35:45,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-25 17:35:45,190 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:35:45,190 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:35:45,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 17:35:45,191 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:35:45,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:35:45,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1975322897, now seen corresponding path program 1 times [2022-11-25 17:35:45,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:35:45,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97978052] [2022-11-25 17:35:45,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:35:45,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:35:45,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:45,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:35:45,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:45,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:35:45,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:45,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 17:35:45,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:45,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:35:45,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:45,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-25 17:35:45,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:45,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-25 17:35:45,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:45,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-25 17:35:45,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:45,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-25 17:35:45,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:45,421 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-25 17:35:45,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:35:45,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97978052] [2022-11-25 17:35:45,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97978052] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:35:45,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:35:45,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 17:35:45,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429361821] [2022-11-25 17:35:45,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:35:45,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 17:35:45,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:35:45,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 17:35:45,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:35:45,425 INFO L87 Difference]: Start difference. First operand 1483 states and 1978 transitions. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 17:35:46,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:35:46,682 INFO L93 Difference]: Finished difference Result 2925 states and 3915 transitions. [2022-11-25 17:35:46,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 17:35:46,683 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 91 [2022-11-25 17:35:46,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:35:46,691 INFO L225 Difference]: With dead ends: 2925 [2022-11-25 17:35:46,692 INFO L226 Difference]: Without dead ends: 1629 [2022-11-25 17:35:46,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-11-25 17:35:46,701 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 346 mSDsluCounter, 1407 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 1659 SdHoareTripleChecker+Invalid, 1277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-25 17:35:46,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 1659 Invalid, 1277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1200 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-25 17:35:46,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2022-11-25 17:35:46,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1523. [2022-11-25 17:35:46,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1205 states have (on average 1.3385892116182572) internal successors, (1613), 1229 states have internal predecessors, (1613), 170 states have call successors, (170), 109 states have call predecessors, (170), 146 states have return successors, (229), 187 states have call predecessors, (229), 168 states have call successors, (229) [2022-11-25 17:35:46,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 2012 transitions. [2022-11-25 17:35:46,839 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 2012 transitions. Word has length 91 [2022-11-25 17:35:46,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:35:46,840 INFO L495 AbstractCegarLoop]: Abstraction has 1523 states and 2012 transitions. [2022-11-25 17:35:46,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 17:35:46,841 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 2012 transitions. [2022-11-25 17:35:46,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-25 17:35:46,849 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:35:46,850 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:35:46,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 17:35:46,850 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:35:46,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:35:46,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1531422223, now seen corresponding path program 1 times [2022-11-25 17:35:46,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:35:46,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054647110] [2022-11-25 17:35:46,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:35:46,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:35:46,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:47,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:35:47,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:47,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:35:47,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:47,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 17:35:47,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:47,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:35:47,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:47,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-25 17:35:47,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:47,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-25 17:35:47,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:47,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-25 17:35:47,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:47,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-25 17:35:47,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:47,104 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-25 17:35:47,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:35:47,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054647110] [2022-11-25 17:35:47,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054647110] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:35:47,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:35:47,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 17:35:47,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695087716] [2022-11-25 17:35:47,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:35:47,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 17:35:47,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:35:47,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 17:35:47,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:35:47,108 INFO L87 Difference]: Start difference. First operand 1523 states and 2012 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-25 17:35:48,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:35:48,320 INFO L93 Difference]: Finished difference Result 3315 states and 4378 transitions. [2022-11-25 17:35:48,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 17:35:48,321 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 91 [2022-11-25 17:35:48,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:35:48,334 INFO L225 Difference]: With dead ends: 3315 [2022-11-25 17:35:48,334 INFO L226 Difference]: Without dead ends: 2053 [2022-11-25 17:35:48,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-25 17:35:48,340 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 799 mSDsluCounter, 931 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 1124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-25 17:35:48,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 1182 Invalid, 1124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 944 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-25 17:35:48,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2053 states. [2022-11-25 17:35:48,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2053 to 1877. [2022-11-25 17:35:48,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1877 states, 1487 states have (on average 1.3113651647612643) internal successors, (1950), 1512 states have internal predecessors, (1950), 210 states have call successors, (210), 139 states have call predecessors, (210), 178 states have return successors, (270), 228 states have call predecessors, (270), 208 states have call successors, (270) [2022-11-25 17:35:48,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1877 states to 1877 states and 2430 transitions. [2022-11-25 17:35:48,513 INFO L78 Accepts]: Start accepts. Automaton has 1877 states and 2430 transitions. Word has length 91 [2022-11-25 17:35:48,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:35:48,514 INFO L495 AbstractCegarLoop]: Abstraction has 1877 states and 2430 transitions. [2022-11-25 17:35:48,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-25 17:35:48,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1877 states and 2430 transitions. [2022-11-25 17:35:48,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-25 17:35:48,516 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:35:48,516 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:35:48,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 17:35:48,517 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:35:48,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:35:48,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1546940941, now seen corresponding path program 1 times [2022-11-25 17:35:48,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:35:48,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546451987] [2022-11-25 17:35:48,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:35:48,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:35:48,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:48,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:35:48,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:48,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:35:48,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:48,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 17:35:48,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:48,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:35:48,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:48,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-25 17:35:48,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:48,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-25 17:35:48,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:48,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-25 17:35:48,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:48,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-25 17:35:48,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:48,730 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-25 17:35:48,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:35:48,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546451987] [2022-11-25 17:35:48,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546451987] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:35:48,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:35:48,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 17:35:48,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858546013] [2022-11-25 17:35:48,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:35:48,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 17:35:48,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:35:48,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 17:35:48,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:35:48,733 INFO L87 Difference]: Start difference. First operand 1877 states and 2430 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-25 17:35:50,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:35:50,102 INFO L93 Difference]: Finished difference Result 3404 states and 4394 transitions. [2022-11-25 17:35:50,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-25 17:35:50,102 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 91 [2022-11-25 17:35:50,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:35:50,114 INFO L225 Difference]: With dead ends: 3404 [2022-11-25 17:35:50,114 INFO L226 Difference]: Without dead ends: 1951 [2022-11-25 17:35:50,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2022-11-25 17:35:50,119 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 841 mSDsluCounter, 1068 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 866 SdHoareTripleChecker+Valid, 1323 SdHoareTripleChecker+Invalid, 1272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:35:50,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [866 Valid, 1323 Invalid, 1272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-25 17:35:50,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1951 states. [2022-11-25 17:35:50,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1951 to 1656. [2022-11-25 17:35:50,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1656 states, 1319 states have (on average 1.3131159969673996) internal successors, (1732), 1339 states have internal predecessors, (1732), 182 states have call successors, (182), 120 states have call predecessors, (182), 153 states have return successors, (230), 198 states have call predecessors, (230), 180 states have call successors, (230) [2022-11-25 17:35:50,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1656 states to 1656 states and 2144 transitions. [2022-11-25 17:35:50,282 INFO L78 Accepts]: Start accepts. Automaton has 1656 states and 2144 transitions. Word has length 91 [2022-11-25 17:35:50,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:35:50,282 INFO L495 AbstractCegarLoop]: Abstraction has 1656 states and 2144 transitions. [2022-11-25 17:35:50,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-25 17:35:50,283 INFO L276 IsEmpty]: Start isEmpty. Operand 1656 states and 2144 transitions. [2022-11-25 17:35:50,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-25 17:35:50,285 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:35:50,285 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:35:50,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 17:35:50,285 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:35:50,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:35:50,286 INFO L85 PathProgramCache]: Analyzing trace with hash 392221105, now seen corresponding path program 1 times [2022-11-25 17:35:50,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:35:50,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301444163] [2022-11-25 17:35:50,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:35:50,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:35:50,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:50,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:35:50,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:50,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:35:50,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:50,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 17:35:50,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:50,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:35:50,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:50,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-25 17:35:50,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:50,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-25 17:35:50,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:50,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-25 17:35:50,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:50,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-25 17:35:50,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:50,406 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 17:35:50,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:35:50,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301444163] [2022-11-25 17:35:50,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301444163] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:35:50,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:35:50,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:35:50,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139890865] [2022-11-25 17:35:50,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:35:50,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:35:50,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:35:50,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:35:50,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:35:50,409 INFO L87 Difference]: Start difference. First operand 1656 states and 2144 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-25 17:35:51,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:35:51,340 INFO L93 Difference]: Finished difference Result 4808 states and 6256 transitions. [2022-11-25 17:35:51,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 17:35:51,341 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 91 [2022-11-25 17:35:51,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:35:51,358 INFO L225 Difference]: With dead ends: 4808 [2022-11-25 17:35:51,359 INFO L226 Difference]: Without dead ends: 3339 [2022-11-25 17:35:51,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-11-25 17:35:51,365 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 1148 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1174 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 17:35:51,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1174 Valid, 690 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 17:35:51,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3339 states. [2022-11-25 17:35:51,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3339 to 3125. [2022-11-25 17:35:51,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3125 states, 2468 states have (on average 1.280388978930308) internal successors, (3160), 2517 states have internal predecessors, (3160), 343 states have call successors, (343), 233 states have call predecessors, (343), 312 states have return successors, (513), 377 states have call predecessors, (513), 341 states have call successors, (513) [2022-11-25 17:35:51,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3125 states to 3125 states and 4016 transitions. [2022-11-25 17:35:51,661 INFO L78 Accepts]: Start accepts. Automaton has 3125 states and 4016 transitions. Word has length 91 [2022-11-25 17:35:51,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:35:51,661 INFO L495 AbstractCegarLoop]: Abstraction has 3125 states and 4016 transitions. [2022-11-25 17:35:51,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-25 17:35:51,662 INFO L276 IsEmpty]: Start isEmpty. Operand 3125 states and 4016 transitions. [2022-11-25 17:35:51,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-25 17:35:51,665 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:35:51,666 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:35:51,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 17:35:51,666 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:35:51,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:35:51,667 INFO L85 PathProgramCache]: Analyzing trace with hash -665616973, now seen corresponding path program 1 times [2022-11-25 17:35:51,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:35:51,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705554980] [2022-11-25 17:35:51,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:35:51,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:35:51,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:51,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:35:51,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:51,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:35:51,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:51,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 17:35:51,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:51,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:35:51,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:51,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-25 17:35:51,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:51,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-25 17:35:51,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:51,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-25 17:35:51,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:51,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-25 17:35:51,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:51,778 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-25 17:35:51,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:35:51,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705554980] [2022-11-25 17:35:51,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705554980] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:35:51,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:35:51,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:35:51,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296749023] [2022-11-25 17:35:51,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:35:51,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:35:51,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:35:51,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:35:51,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:35:51,783 INFO L87 Difference]: Start difference. First operand 3125 states and 4016 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-25 17:35:52,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:35:52,502 INFO L93 Difference]: Finished difference Result 4709 states and 6000 transitions. [2022-11-25 17:35:52,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:35:52,503 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 91 [2022-11-25 17:35:52,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:35:52,515 INFO L225 Difference]: With dead ends: 4709 [2022-11-25 17:35:52,515 INFO L226 Difference]: Without dead ends: 1771 [2022-11-25 17:35:52,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-25 17:35:52,524 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 464 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 917 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 17:35:52,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 917 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 17:35:52,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1771 states. [2022-11-25 17:35:52,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1771 to 1656. [2022-11-25 17:35:52,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1656 states, 1319 states have (on average 1.2850644427596665) internal successors, (1695), 1339 states have internal predecessors, (1695), 182 states have call successors, (182), 120 states have call predecessors, (182), 153 states have return successors, (230), 198 states have call predecessors, (230), 180 states have call successors, (230) [2022-11-25 17:35:52,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1656 states to 1656 states and 2107 transitions. [2022-11-25 17:35:52,697 INFO L78 Accepts]: Start accepts. Automaton has 1656 states and 2107 transitions. Word has length 91 [2022-11-25 17:35:52,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:35:52,697 INFO L495 AbstractCegarLoop]: Abstraction has 1656 states and 2107 transitions. [2022-11-25 17:35:52,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-25 17:35:52,698 INFO L276 IsEmpty]: Start isEmpty. Operand 1656 states and 2107 transitions. [2022-11-25 17:35:52,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-25 17:35:52,701 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:35:52,701 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:35:52,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 17:35:52,702 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:35:52,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:35:52,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1134197990, now seen corresponding path program 1 times [2022-11-25 17:35:52,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:35:52,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424374467] [2022-11-25 17:35:52,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:35:52,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:35:52,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:52,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:35:52,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:52,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:35:52,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:52,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 17:35:52,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:52,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:35:52,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:52,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-25 17:35:52,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:52,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-25 17:35:52,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:52,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-25 17:35:52,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:52,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-25 17:35:52,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:52,894 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:35:52,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:35:52,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424374467] [2022-11-25 17:35:52,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424374467] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:35:52,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:35:52,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 17:35:52,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617409194] [2022-11-25 17:35:52,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:35:52,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 17:35:52,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:35:52,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 17:35:52,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:35:52,897 INFO L87 Difference]: Start difference. First operand 1656 states and 2107 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-25 17:35:54,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:35:54,578 INFO L93 Difference]: Finished difference Result 4074 states and 5190 transitions. [2022-11-25 17:35:54,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-25 17:35:54,578 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 92 [2022-11-25 17:35:54,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:35:54,589 INFO L225 Difference]: With dead ends: 4074 [2022-11-25 17:35:54,590 INFO L226 Difference]: Without dead ends: 2454 [2022-11-25 17:35:54,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2022-11-25 17:35:54,595 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 1740 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 1236 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1777 SdHoareTripleChecker+Valid, 1159 SdHoareTripleChecker+Invalid, 1669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 1236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:35:54,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1777 Valid, 1159 Invalid, 1669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [433 Valid, 1236 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-25 17:35:54,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2454 states. [2022-11-25 17:35:54,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2454 to 2277. [2022-11-25 17:35:54,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2277 states, 1786 states have (on average 1.2525195968645018) internal successors, (2237), 1814 states have internal predecessors, (2237), 259 states have call successors, (259), 168 states have call predecessors, (259), 230 states have return successors, (361), 296 states have call predecessors, (361), 257 states have call successors, (361) [2022-11-25 17:35:54,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2277 states to 2277 states and 2857 transitions. [2022-11-25 17:35:54,839 INFO L78 Accepts]: Start accepts. Automaton has 2277 states and 2857 transitions. Word has length 92 [2022-11-25 17:35:54,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:35:54,840 INFO L495 AbstractCegarLoop]: Abstraction has 2277 states and 2857 transitions. [2022-11-25 17:35:54,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-25 17:35:54,841 INFO L276 IsEmpty]: Start isEmpty. Operand 2277 states and 2857 transitions. [2022-11-25 17:35:54,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-25 17:35:54,842 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:35:54,842 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] [2022-11-25 17:35:54,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 17:35:54,843 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:35:54,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:35:54,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1197403432, now seen corresponding path program 1 times [2022-11-25 17:35:54,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:35:54,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786383346] [2022-11-25 17:35:54,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:35:54,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:35:54,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:54,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:35:54,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:54,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:35:54,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:54,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-25 17:35:54,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:54,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-25 17:35:54,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:54,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-25 17:35:54,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:54,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:35:54,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:35:54,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786383346] [2022-11-25 17:35:54,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786383346] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:35:54,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:35:54,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:35:54,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740147111] [2022-11-25 17:35:54,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:35:54,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:35:54,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:35:54,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:35:54,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:35:54,932 INFO L87 Difference]: Start difference. First operand 2277 states and 2857 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:35:56,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:35:56,219 INFO L93 Difference]: Finished difference Result 2498 states and 3201 transitions. [2022-11-25 17:35:56,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:35:56,220 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-11-25 17:35:56,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:35:56,230 INFO L225 Difference]: With dead ends: 2498 [2022-11-25 17:35:56,230 INFO L226 Difference]: Without dead ends: 2331 [2022-11-25 17:35:56,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:35:56,232 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 540 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-25 17:35:56,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [556 Valid, 628 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-25 17:35:56,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2331 states. [2022-11-25 17:35:56,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2331 to 2277. [2022-11-25 17:35:56,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2277 states, 1786 states have (on average 1.2519596864501679) internal successors, (2236), 1814 states have internal predecessors, (2236), 259 states have call successors, (259), 168 states have call predecessors, (259), 230 states have return successors, (361), 296 states have call predecessors, (361), 257 states have call successors, (361) [2022-11-25 17:35:56,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2277 states to 2277 states and 2856 transitions. [2022-11-25 17:35:56,553 INFO L78 Accepts]: Start accepts. Automaton has 2277 states and 2856 transitions. Word has length 90 [2022-11-25 17:35:56,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:35:56,553 INFO L495 AbstractCegarLoop]: Abstraction has 2277 states and 2856 transitions. [2022-11-25 17:35:56,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:35:56,553 INFO L276 IsEmpty]: Start isEmpty. Operand 2277 states and 2856 transitions. [2022-11-25 17:35:56,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-25 17:35:56,555 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:35:56,555 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] [2022-11-25 17:35:56,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 17:35:56,555 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:35:56,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:35:56,556 INFO L85 PathProgramCache]: Analyzing trace with hash 358369770, now seen corresponding path program 1 times [2022-11-25 17:35:56,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:35:56,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523186359] [2022-11-25 17:35:56,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:35:56,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:35:56,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:56,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:35:56,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:56,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:35:56,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:56,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-25 17:35:56,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:56,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-25 17:35:56,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:56,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-25 17:35:56,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:56,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:35:56,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:35:56,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523186359] [2022-11-25 17:35:56,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523186359] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:35:56,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:35:56,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:35:56,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070330630] [2022-11-25 17:35:56,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:35:56,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:35:56,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:35:56,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:35:56,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:35:56,674 INFO L87 Difference]: Start difference. First operand 2277 states and 2856 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:35:58,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:35:58,353 INFO L93 Difference]: Finished difference Result 2717 states and 3543 transitions. [2022-11-25 17:35:58,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 17:35:58,358 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-11-25 17:35:58,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:35:58,369 INFO L225 Difference]: With dead ends: 2717 [2022-11-25 17:35:58,369 INFO L226 Difference]: Without dead ends: 2552 [2022-11-25 17:35:58,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-25 17:35:58,372 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 879 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 1163 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 902 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 1279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-25 17:35:58,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [902 Valid, 866 Invalid, 1279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1163 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-25 17:35:58,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2552 states. [2022-11-25 17:35:58,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2552 to 2445. [2022-11-25 17:35:58,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2445 states, 1934 states have (on average 1.2740434332988624) internal successors, (2464), 1963 states have internal predecessors, (2464), 272 states have call successors, (272), 174 states have call predecessors, (272), 237 states have return successors, (377), 309 states have call predecessors, (377), 270 states have call successors, (377) [2022-11-25 17:35:58,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2445 states to 2445 states and 3113 transitions. [2022-11-25 17:35:58,684 INFO L78 Accepts]: Start accepts. Automaton has 2445 states and 3113 transitions. Word has length 90 [2022-11-25 17:35:58,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:35:58,684 INFO L495 AbstractCegarLoop]: Abstraction has 2445 states and 3113 transitions. [2022-11-25 17:35:58,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:35:58,686 INFO L276 IsEmpty]: Start isEmpty. Operand 2445 states and 3113 transitions. [2022-11-25 17:35:58,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-25 17:35:58,687 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:35:58,687 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] [2022-11-25 17:35:58,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 17:35:58,688 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:35:58,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:35:58,688 INFO L85 PathProgramCache]: Analyzing trace with hash -816289682, now seen corresponding path program 1 times [2022-11-25 17:35:58,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:35:58,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502531360] [2022-11-25 17:35:58,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:35:58,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:35:58,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:58,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:35:58,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:58,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:35:58,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:58,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-25 17:35:58,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:58,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-25 17:35:58,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:58,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-25 17:35:58,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:58,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:35:58,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:35:58,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502531360] [2022-11-25 17:35:58,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502531360] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:35:58,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:35:58,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:35:58,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830723870] [2022-11-25 17:35:58,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:35:58,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:35:58,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:35:58,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:35:58,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:35:58,857 INFO L87 Difference]: Start difference. First operand 2445 states and 3113 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:36:00,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:36:00,914 INFO L93 Difference]: Finished difference Result 3110 states and 4145 transitions. [2022-11-25 17:36:00,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 17:36:00,914 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-11-25 17:36:00,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:36:00,928 INFO L225 Difference]: With dead ends: 3110 [2022-11-25 17:36:00,928 INFO L226 Difference]: Without dead ends: 2777 [2022-11-25 17:36:00,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-25 17:36:00,932 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 880 mSDsluCounter, 1088 mSDsCounter, 0 mSdLazyCounter, 1751 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 903 SdHoareTripleChecker+Valid, 1425 SdHoareTripleChecker+Invalid, 1838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-25 17:36:00,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [903 Valid, 1425 Invalid, 1838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1751 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-25 17:36:00,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2777 states. [2022-11-25 17:36:01,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2777 to 2602. [2022-11-25 17:36:01,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2602 states, 2071 states have (on average 1.2892322549492998) internal successors, (2670), 2101 states have internal predecessors, (2670), 285 states have call successors, (285), 180 states have call predecessors, (285), 244 states have return successors, (392), 323 states have call predecessors, (392), 283 states have call successors, (392) [2022-11-25 17:36:01,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2602 states to 2602 states and 3347 transitions. [2022-11-25 17:36:01,272 INFO L78 Accepts]: Start accepts. Automaton has 2602 states and 3347 transitions. Word has length 90 [2022-11-25 17:36:01,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:36:01,273 INFO L495 AbstractCegarLoop]: Abstraction has 2602 states and 3347 transitions. [2022-11-25 17:36:01,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:36:01,273 INFO L276 IsEmpty]: Start isEmpty. Operand 2602 states and 3347 transitions. [2022-11-25 17:36:01,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-25 17:36:01,274 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:36:01,275 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] [2022-11-25 17:36:01,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 17:36:01,275 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:36:01,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:36:01,276 INFO L85 PathProgramCache]: Analyzing trace with hash 70933164, now seen corresponding path program 1 times [2022-11-25 17:36:01,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:36:01,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439402006] [2022-11-25 17:36:01,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:36:01,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:36:01,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:36:01,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:36:01,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:36:01,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:36:01,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:36:01,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-25 17:36:01,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:36:01,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-25 17:36:01,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:36:01,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-25 17:36:01,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:36:01,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:36:01,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:36:01,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439402006] [2022-11-25 17:36:01,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439402006] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:36:01,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:36:01,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:36:01,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007883745] [2022-11-25 17:36:01,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:36:01,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:36:01,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:36:01,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:36:01,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:36:01,465 INFO L87 Difference]: Start difference. First operand 2602 states and 3347 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:36:03,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:36:03,581 INFO L93 Difference]: Finished difference Result 3688 states and 5027 transitions. [2022-11-25 17:36:03,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 17:36:03,582 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-11-25 17:36:03,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:36:03,597 INFO L225 Difference]: With dead ends: 3688 [2022-11-25 17:36:03,597 INFO L226 Difference]: Without dead ends: 3198 [2022-11-25 17:36:03,601 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 [2022-11-25 17:36:03,602 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 878 mSDsluCounter, 1088 mSDsCounter, 0 mSdLazyCounter, 1747 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 1836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-25 17:36:03,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [901 Valid, 1423 Invalid, 1836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1747 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-25 17:36:03,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3198 states. [2022-11-25 17:36:04,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3198 to 2917. [2022-11-25 17:36:04,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2917 states, 2346 states have (on average 1.314151747655584) internal successors, (3083), 2378 states have internal predecessors, (3083), 311 states have call successors, (311), 192 states have call predecessors, (311), 258 states have return successors, (426), 351 states have call predecessors, (426), 309 states have call successors, (426) [2022-11-25 17:36:04,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2917 states to 2917 states and 3820 transitions. [2022-11-25 17:36:04,016 INFO L78 Accepts]: Start accepts. Automaton has 2917 states and 3820 transitions. Word has length 90 [2022-11-25 17:36:04,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:36:04,016 INFO L495 AbstractCegarLoop]: Abstraction has 2917 states and 3820 transitions. [2022-11-25 17:36:04,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:36:04,017 INFO L276 IsEmpty]: Start isEmpty. Operand 2917 states and 3820 transitions. [2022-11-25 17:36:04,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-25 17:36:04,019 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:36:04,019 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] [2022-11-25 17:36:04,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 17:36:04,019 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:36:04,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:36:04,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1840109394, now seen corresponding path program 1 times [2022-11-25 17:36:04,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:36:04,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051618139] [2022-11-25 17:36:04,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:36:04,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:36:04,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:36:04,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:36:04,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:36:04,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:36:04,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:36:04,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-25 17:36:04,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:36:04,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-25 17:36:04,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:36:04,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-25 17:36:04,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:36:04,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:36:04,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:36:04,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051618139] [2022-11-25 17:36:04,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051618139] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:36:04,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:36:04,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:36:04,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270328702] [2022-11-25 17:36:04,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:36:04,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:36:04,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:36:04,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:36:04,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:36:04,201 INFO L87 Difference]: Start difference. First operand 2917 states and 3820 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:36:06,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:36:06,427 INFO L93 Difference]: Finished difference Result 4803 states and 6724 transitions. [2022-11-25 17:36:06,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 17:36:06,428 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-11-25 17:36:06,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:36:06,442 INFO L225 Difference]: With dead ends: 4803 [2022-11-25 17:36:06,443 INFO L226 Difference]: Without dead ends: 3998 [2022-11-25 17:36:06,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-25 17:36:06,447 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 874 mSDsluCounter, 1088 mSDsCounter, 0 mSdLazyCounter, 1738 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 1827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-25 17:36:06,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [897 Valid, 1423 Invalid, 1827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1738 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-25 17:36:06,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3998 states. [2022-11-25 17:36:06,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3998 to 3548. [2022-11-25 17:36:06,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3548 states, 2897 states have (on average 1.349326889886089) internal successors, (3909), 2933 states have internal predecessors, (3909), 363 states have call successors, (363), 216 states have call predecessors, (363), 286 states have return successors, (500), 407 states have call predecessors, (500), 361 states have call successors, (500) [2022-11-25 17:36:06,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3548 states to 3548 states and 4772 transitions. [2022-11-25 17:36:06,880 INFO L78 Accepts]: Start accepts. Automaton has 3548 states and 4772 transitions. Word has length 90 [2022-11-25 17:36:06,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:36:06,880 INFO L495 AbstractCegarLoop]: Abstraction has 3548 states and 4772 transitions. [2022-11-25 17:36:06,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:36:06,881 INFO L276 IsEmpty]: Start isEmpty. Operand 3548 states and 4772 transitions. [2022-11-25 17:36:06,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-25 17:36:06,883 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:36:06,883 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] [2022-11-25 17:36:06,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 17:36:06,883 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:36:06,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:36:06,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1763208596, now seen corresponding path program 1 times [2022-11-25 17:36:06,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:36:06,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645229562] [2022-11-25 17:36:06,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:36:06,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:36:06,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:36:06,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:36:06,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:36:07,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:36:07,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:36:07,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-25 17:36:07,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:36:07,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-25 17:36:07,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:36:07,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-25 17:36:07,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:36:07,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:36:07,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:36:07,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645229562] [2022-11-25 17:36:07,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645229562] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:36:07,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:36:07,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:36:07,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491282711] [2022-11-25 17:36:07,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:36:07,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:36:07,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:36:07,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:36:07,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:36:07,068 INFO L87 Difference]: Start difference. First operand 3548 states and 4772 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:36:09,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:36:09,330 INFO L93 Difference]: Finished difference Result 7032 states and 10134 transitions. [2022-11-25 17:36:09,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 17:36:09,331 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-11-25 17:36:09,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:36:09,353 INFO L225 Difference]: With dead ends: 7032 [2022-11-25 17:36:09,353 INFO L226 Difference]: Without dead ends: 5596 [2022-11-25 17:36:09,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-25 17:36:09,360 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 930 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 1558 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 953 SdHoareTripleChecker+Valid, 1069 SdHoareTripleChecker+Invalid, 1665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-25 17:36:09,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [953 Valid, 1069 Invalid, 1665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1558 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-25 17:36:09,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5596 states. [2022-11-25 17:36:10,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5596 to 4815. [2022-11-25 17:36:10,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4815 states, 4004 states have (on average 1.3903596403596403) internal successors, (5567), 4048 states have internal predecessors, (5567), 467 states have call successors, (467), 264 states have call predecessors, (467), 342 states have return successors, (666), 519 states have call predecessors, (666), 465 states have call successors, (666) [2022-11-25 17:36:10,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4815 states to 4815 states and 6700 transitions. [2022-11-25 17:36:10,083 INFO L78 Accepts]: Start accepts. Automaton has 4815 states and 6700 transitions. Word has length 90 [2022-11-25 17:36:10,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:36:10,083 INFO L495 AbstractCegarLoop]: Abstraction has 4815 states and 6700 transitions. [2022-11-25 17:36:10,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:36:10,084 INFO L276 IsEmpty]: Start isEmpty. Operand 4815 states and 6700 transitions. [2022-11-25 17:36:10,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-25 17:36:10,087 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:36:10,087 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] [2022-11-25 17:36:10,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-25 17:36:10,088 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:36:10,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:36:10,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1564408046, now seen corresponding path program 1 times [2022-11-25 17:36:10,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:36:10,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929845538] [2022-11-25 17:36:10,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:36:10,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:36:10,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:36:10,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:36:10,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:36:10,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:36:10,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:36:10,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-25 17:36:10,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:36:10,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-25 17:36:10,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:36:10,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-25 17:36:10,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:36:10,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:36:10,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:36:10,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929845538] [2022-11-25 17:36:10,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929845538] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:36:10,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:36:10,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:36:10,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808637610] [2022-11-25 17:36:10,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:36:10,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:36:10,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:36:10,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:36:10,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:36:10,260 INFO L87 Difference]: Start difference. First operand 4815 states and 6700 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:36:13,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:36:13,075 INFO L93 Difference]: Finished difference Result 12322 states and 18250 transitions. [2022-11-25 17:36:13,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 17:36:13,076 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-11-25 17:36:13,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:36:13,109 INFO L225 Difference]: With dead ends: 12322 [2022-11-25 17:36:13,109 INFO L226 Difference]: Without dead ends: 9619 [2022-11-25 17:36:13,119 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 [2022-11-25 17:36:13,120 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 1006 mSDsluCounter, 1077 mSDsCounter, 0 mSdLazyCounter, 1688 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1034 SdHoareTripleChecker+Valid, 1409 SdHoareTripleChecker+Invalid, 1782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-25 17:36:13,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1034 Valid, 1409 Invalid, 1782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1688 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-25 17:36:13,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9619 states. [2022-11-25 17:36:14,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9619 to 7251. [2022-11-25 17:36:14,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7251 states, 6136 states have (on average 1.430084745762712) internal successors, (8775), 6196 states have internal predecessors, (8775), 659 states have call successors, (659), 360 states have call predecessors, (659), 454 states have return successors, (1036), 727 states have call predecessors, (1036), 657 states have call successors, (1036) [2022-11-25 17:36:14,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7251 states to 7251 states and 10470 transitions. [2022-11-25 17:36:14,227 INFO L78 Accepts]: Start accepts. Automaton has 7251 states and 10470 transitions. Word has length 90 [2022-11-25 17:36:14,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:36:14,228 INFO L495 AbstractCegarLoop]: Abstraction has 7251 states and 10470 transitions. [2022-11-25 17:36:14,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:36:14,228 INFO L276 IsEmpty]: Start isEmpty. Operand 7251 states and 10470 transitions. [2022-11-25 17:36:14,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-25 17:36:14,233 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:36:14,233 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] [2022-11-25 17:36:14,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-25 17:36:14,234 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:36:14,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:36:14,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1071781872, now seen corresponding path program 1 times [2022-11-25 17:36:14,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:36:14,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767738404] [2022-11-25 17:36:14,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:36:14,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:36:14,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:36:14,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:36:14,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:36:14,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:36:14,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:36:14,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-25 17:36:14,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:36:14,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-25 17:36:14,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:36:14,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-25 17:36:14,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:36:14,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:36:14,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:36:14,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767738404] [2022-11-25 17:36:14,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767738404] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:36:14,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:36:14,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:36:14,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790722344] [2022-11-25 17:36:14,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:36:14,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:36:14,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:36:14,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:36:14,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:36:14,388 INFO L87 Difference]: Start difference. First operand 7251 states and 10470 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:36:17,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:36:17,818 INFO L93 Difference]: Finished difference Result 21288 states and 32222 transitions. [2022-11-25 17:36:17,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 17:36:17,818 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-11-25 17:36:17,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:36:17,945 INFO L225 Difference]: With dead ends: 21288 [2022-11-25 17:36:17,946 INFO L226 Difference]: Without dead ends: 16149 [2022-11-25 17:36:17,968 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 [2022-11-25 17:36:17,969 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 894 mSDsluCounter, 1080 mSDsCounter, 0 mSdLazyCounter, 1874 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 1413 SdHoareTripleChecker+Invalid, 1965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-25 17:36:17,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [916 Valid, 1413 Invalid, 1965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1874 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-25 17:36:17,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16149 states. [2022-11-25 17:36:19,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16149 to 12184. [2022-11-25 17:36:19,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12184 states, 10477 states have (on average 1.46310966879832) internal successors, (15329), 10569 states have internal predecessors, (15329), 1027 states have call successors, (1027), 552 states have call predecessors, (1027), 678 states have return successors, (1922), 1127 states have call predecessors, (1922), 1025 states have call successors, (1922) [2022-11-25 17:36:19,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12184 states to 12184 states and 18278 transitions. [2022-11-25 17:36:19,389 INFO L78 Accepts]: Start accepts. Automaton has 12184 states and 18278 transitions. Word has length 90 [2022-11-25 17:36:19,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:36:19,390 INFO L495 AbstractCegarLoop]: Abstraction has 12184 states and 18278 transitions. [2022-11-25 17:36:19,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:36:19,390 INFO L276 IsEmpty]: Start isEmpty. Operand 12184 states and 18278 transitions. [2022-11-25 17:36:19,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-25 17:36:19,399 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:36:19,400 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] [2022-11-25 17:36:19,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-25 17:36:19,400 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:36:19,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:36:19,401 INFO L85 PathProgramCache]: Analyzing trace with hash 2025722030, now seen corresponding path program 1 times [2022-11-25 17:36:19,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:36:19,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968955612] [2022-11-25 17:36:19,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:36:19,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:36:19,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:36:19,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:36:19,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:36:19,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:36:19,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:36:19,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-25 17:36:19,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:36:19,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-25 17:36:19,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:36:19,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-25 17:36:19,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:36:19,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:36:19,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:36:19,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968955612] [2022-11-25 17:36:19,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968955612] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:36:19,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:36:19,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:36:19,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537185182] [2022-11-25 17:36:19,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:36:19,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:36:19,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:36:19,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:36:19,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:36:19,538 INFO L87 Difference]: Start difference. First operand 12184 states and 18278 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:36:24,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:36:24,830 INFO L93 Difference]: Finished difference Result 38835 states and 60220 transitions. [2022-11-25 17:36:24,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 17:36:24,831 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-11-25 17:36:24,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:36:24,947 INFO L225 Difference]: With dead ends: 38835 [2022-11-25 17:36:24,948 INFO L226 Difference]: Without dead ends: 28763 [2022-11-25 17:36:24,983 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 [2022-11-25 17:36:24,984 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 927 mSDsluCounter, 1080 mSDsCounter, 0 mSdLazyCounter, 1663 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 955 SdHoareTripleChecker+Valid, 1413 SdHoareTripleChecker+Invalid, 1757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-25 17:36:24,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [955 Valid, 1413 Invalid, 1757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1663 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-25 17:36:25,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28763 states. [2022-11-25 17:36:28,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28763 to 22017. [2022-11-25 17:36:28,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22017 states, 19158 states have (on average 1.485906670842468) internal successors, (28467), 19314 states have internal predecessors, (28467), 1731 states have call successors, (1731), 936 states have call predecessors, (1731), 1126 states have return successors, (4148), 1895 states have call predecessors, (4148), 1729 states have call successors, (4148) [2022-11-25 17:36:28,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22017 states to 22017 states and 34346 transitions. [2022-11-25 17:36:28,111 INFO L78 Accepts]: Start accepts. Automaton has 22017 states and 34346 transitions. Word has length 90 [2022-11-25 17:36:28,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:36:28,111 INFO L495 AbstractCegarLoop]: Abstraction has 22017 states and 34346 transitions. [2022-11-25 17:36:28,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:36:28,112 INFO L276 IsEmpty]: Start isEmpty. Operand 22017 states and 34346 transitions. [2022-11-25 17:36:28,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-25 17:36:28,131 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:36:28,131 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] [2022-11-25 17:36:28,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-25 17:36:28,132 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:36:28,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:36:28,132 INFO L85 PathProgramCache]: Analyzing trace with hash 809568304, now seen corresponding path program 1 times [2022-11-25 17:36:28,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:36:28,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207866479] [2022-11-25 17:36:28,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:36:28,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:36:28,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:36:28,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:36:28,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:36:28,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:36:28,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:36:28,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-25 17:36:28,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:36:28,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-25 17:36:28,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:36:28,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-25 17:36:28,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:36:28,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:36:28,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:36:28,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207866479] [2022-11-25 17:36:28,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207866479] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:36:28,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:36:28,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:36:28,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803533344] [2022-11-25 17:36:28,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:36:28,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:36:28,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:36:28,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:36:28,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:36:28,271 INFO L87 Difference]: Start difference. First operand 22017 states and 34346 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:36:36,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:36:36,184 INFO L93 Difference]: Finished difference Result 72746 states and 116274 transitions. [2022-11-25 17:36:36,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 17:36:36,185 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-11-25 17:36:36,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:36:36,626 INFO L225 Difference]: With dead ends: 72746 [2022-11-25 17:36:36,626 INFO L226 Difference]: Without dead ends: 52841 [2022-11-25 17:36:36,695 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 [2022-11-25 17:36:36,697 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 884 mSDsluCounter, 1080 mSDsCounter, 0 mSdLazyCounter, 1648 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 1413 SdHoareTripleChecker+Invalid, 1743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-25 17:36:36,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [912 Valid, 1413 Invalid, 1743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1648 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-25 17:36:36,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52841 states. [2022-11-25 17:36:42,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52841 to 41618. [2022-11-25 17:36:42,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41618 states, 36519 states have (on average 1.50072564966182) internal successors, (54805), 36803 states have internal predecessors, (54805), 3075 states have call successors, (3075), 1704 states have call predecessors, (3075), 2022 states have return successors, (9994), 3367 states have call predecessors, (9994), 3073 states have call successors, (9994) [2022-11-25 17:36:42,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41618 states to 41618 states and 67874 transitions. [2022-11-25 17:36:42,637 INFO L78 Accepts]: Start accepts. Automaton has 41618 states and 67874 transitions. Word has length 90 [2022-11-25 17:36:42,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:36:42,638 INFO L495 AbstractCegarLoop]: Abstraction has 41618 states and 67874 transitions. [2022-11-25 17:36:42,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:36:42,638 INFO L276 IsEmpty]: Start isEmpty. Operand 41618 states and 67874 transitions. [2022-11-25 17:36:42,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-25 17:36:42,686 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:36:42,686 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] [2022-11-25 17:36:42,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-25 17:36:42,687 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:36:42,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:36:42,687 INFO L85 PathProgramCache]: Analyzing trace with hash 77600878, now seen corresponding path program 1 times [2022-11-25 17:36:42,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:36:42,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437000166] [2022-11-25 17:36:42,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:36:42,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:36:42,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:36:42,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:36:42,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:36:42,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:36:42,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:36:42,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-25 17:36:42,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:36:42,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-25 17:36:42,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:36:42,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-25 17:36:42,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:36:42,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:36:42,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:36:42,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437000166] [2022-11-25 17:36:42,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437000166] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:36:42,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:36:42,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:36:42,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930762566] [2022-11-25 17:36:42,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:36:42,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:36:42,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:36:42,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:36:42,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:36:42,901 INFO L87 Difference]: Start difference. First operand 41618 states and 67874 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:36:55,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:36:55,221 INFO L93 Difference]: Finished difference Result 110455 states and 176651 transitions. [2022-11-25 17:36:55,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 17:36:55,222 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-11-25 17:36:55,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:36:55,606 INFO L225 Difference]: With dead ends: 110455 [2022-11-25 17:36:55,606 INFO L226 Difference]: Without dead ends: 70950 [2022-11-25 17:36:55,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-11-25 17:36:55,765 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 569 mSDsluCounter, 941 mSDsCounter, 0 mSdLazyCounter, 1312 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 1193 SdHoareTripleChecker+Invalid, 1387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:36:55,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [569 Valid, 1193 Invalid, 1387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1312 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-25 17:36:56,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70950 states. [2022-11-25 17:37:00,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70950 to 42389. [2022-11-25 17:37:00,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42389 states, 37290 states have (on average 1.4903727540895682) internal successors, (55576), 37574 states have internal predecessors, (55576), 3075 states have call successors, (3075), 1704 states have call predecessors, (3075), 2022 states have return successors, (9994), 3367 states have call predecessors, (9994), 3073 states have call successors, (9994) [2022-11-25 17:37:00,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42389 states to 42389 states and 68645 transitions. [2022-11-25 17:37:00,750 INFO L78 Accepts]: Start accepts. Automaton has 42389 states and 68645 transitions. Word has length 90 [2022-11-25 17:37:00,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:37:00,750 INFO L495 AbstractCegarLoop]: Abstraction has 42389 states and 68645 transitions. [2022-11-25 17:37:00,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:37:00,751 INFO L276 IsEmpty]: Start isEmpty. Operand 42389 states and 68645 transitions. [2022-11-25 17:37:00,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-25 17:37:00,786 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:37:00,786 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] [2022-11-25 17:37:00,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-25 17:37:00,786 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:37:00,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:37:00,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1338518128, now seen corresponding path program 1 times [2022-11-25 17:37:00,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:37:00,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431697647] [2022-11-25 17:37:00,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:37:00,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:37:00,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:37:00,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:37:00,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:37:00,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:37:00,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:37:00,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-25 17:37:00,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:37:00,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-25 17:37:00,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:37:00,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-25 17:37:00,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:37:00,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:37:00,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:37:00,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431697647] [2022-11-25 17:37:00,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431697647] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:37:00,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:37:00,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:37:00,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349609855] [2022-11-25 17:37:00,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:37:00,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:37:00,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:37:00,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:37:00,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:37:00,968 INFO L87 Difference]: Start difference. First operand 42389 states and 68645 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)