./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.1.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d55450-41db-4b4e-9191-c350689e6a3d/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d55450-41db-4b4e-9191-c350689e6a3d/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d55450-41db-4b4e-9191-c350689e6a3d/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d55450-41db-4b4e-9191-c350689e6a3d/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.1.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d55450-41db-4b4e-9191-c350689e6a3d/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d55450-41db-4b4e-9191-c350689e6a3d/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 883e1ef2a948697d12588312fbc96d1f19bb97cf9b1fde4627b6f04bc3bcbaed --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:21:24,795 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:21:24,798 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:21:24,849 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:21:24,850 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:21:24,855 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:21:24,858 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:21:24,862 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:21:24,865 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:21:24,875 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:21:24,877 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:21:24,880 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:21:24,881 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:21:24,884 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:21:24,886 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:21:24,891 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:21:24,892 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:21:24,894 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:21:24,896 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:21:24,904 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:21:24,928 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:21:24,931 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:21:24,933 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:21:24,934 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:21:24,946 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:21:24,948 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:21:24,949 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:21:24,950 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:21:24,952 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:21:24,954 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:21:24,954 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:21:24,955 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:21:24,957 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:21:24,959 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:21:24,960 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:21:24,961 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:21:24,962 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:21:24,962 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:21:24,975 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:21:24,976 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:21:24,977 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:21:24,978 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d55450-41db-4b4e-9191-c350689e6a3d/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 12:21:25,001 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:21:25,002 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:21:25,002 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:21:25,002 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:21:25,003 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:21:25,003 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:21:25,004 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:21:25,004 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:21:25,004 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:21:25,005 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:21:25,005 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:21:25,005 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:21:25,005 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:21:25,006 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:21:25,006 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:21:25,006 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:21:25,006 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:21:25,006 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:21:25,007 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:21:25,007 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:21:25,007 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:21:25,007 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:21:25,008 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:21:25,008 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:21:25,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:21:25,008 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:21:25,009 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:21:25,009 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:21:25,009 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:21:25,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:21:25,009 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:21:25,010 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:21:25,010 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:21:25,010 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d55450-41db-4b4e-9191-c350689e6a3d/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d55450-41db-4b4e-9191-c350689e6a3d/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 883e1ef2a948697d12588312fbc96d1f19bb97cf9b1fde4627b6f04bc3bcbaed [2022-11-20 12:21:25,370 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:21:25,415 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:21:25,418 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:21:25,420 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:21:25,420 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:21:25,422 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d55450-41db-4b4e-9191-c350689e6a3d/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.1.ufo.UNBOUNDED.pals.c [2022-11-20 12:21:29,160 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:21:29,632 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:21:29,633 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d55450-41db-4b4e-9191-c350689e6a3d/sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.1.ufo.UNBOUNDED.pals.c [2022-11-20 12:21:29,652 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d55450-41db-4b4e-9191-c350689e6a3d/bin/uautomizer-ug76WZFUDN/data/115172050/74360fb852ce4b8a9de21dd8808b07ab/FLAGa69a70d69 [2022-11-20 12:21:29,685 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d55450-41db-4b4e-9191-c350689e6a3d/bin/uautomizer-ug76WZFUDN/data/115172050/74360fb852ce4b8a9de21dd8808b07ab [2022-11-20 12:21:29,688 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:21:29,691 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:21:29,697 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:21:29,697 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:21:29,702 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:21:29,703 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:21:29" (1/1) ... [2022-11-20 12:21:29,705 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f48752b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:21:29, skipping insertion in model container [2022-11-20 12:21:29,705 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:21:29" (1/1) ... [2022-11-20 12:21:29,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:21:29,809 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:21:30,430 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_d5d55450-41db-4b4e-9191-c350689e6a3d/sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.1.ufo.UNBOUNDED.pals.c[52225,52238] [2022-11-20 12:21:30,435 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:21:30,452 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:21:30,691 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_d5d55450-41db-4b4e-9191-c350689e6a3d/sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.1.ufo.UNBOUNDED.pals.c[52225,52238] [2022-11-20 12:21:30,692 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:21:30,732 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:21:30,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:21:30 WrapperNode [2022-11-20 12:21:30,733 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:21:30,734 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:21:30,734 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:21:30,735 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:21:30,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:21:30" (1/1) ... [2022-11-20 12:21:30,781 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:21:30" (1/1) ... [2022-11-20 12:21:30,901 INFO L138 Inliner]: procedures = 25, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 1933 [2022-11-20 12:21:30,901 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:21:30,902 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:21:30,902 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:21:30,902 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:21:30,913 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:21:30" (1/1) ... [2022-11-20 12:21:30,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:21:30" (1/1) ... [2022-11-20 12:21:30,920 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:21:30" (1/1) ... [2022-11-20 12:21:30,920 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:21:30" (1/1) ... [2022-11-20 12:21:30,949 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:21:30" (1/1) ... [2022-11-20 12:21:30,972 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:21:30" (1/1) ... [2022-11-20 12:21:30,978 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:21:30" (1/1) ... [2022-11-20 12:21:30,986 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:21:30" (1/1) ... [2022-11-20 12:21:30,998 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:21:30,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:21:30,999 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:21:30,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:21:31,032 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:21:30" (1/1) ... [2022-11-20 12:21:31,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:21:31,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d55450-41db-4b4e-9191-c350689e6a3d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:21:31,152 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d55450-41db-4b4e-9191-c350689e6a3d/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:21:31,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5d55450-41db-4b4e-9191-c350689e6a3d/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:21:31,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:21:31,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:21:31,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:21:31,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:21:31,533 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:21:31,535 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:21:33,730 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:21:33,748 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:21:33,748 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 12:21:33,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:21:33 BoogieIcfgContainer [2022-11-20 12:21:33,753 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:21:33,755 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:21:33,755 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:21:33,760 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:21:33,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:21:29" (1/3) ... [2022-11-20 12:21:33,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cbef2fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:21:33, skipping insertion in model container [2022-11-20 12:21:33,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:21:30" (2/3) ... [2022-11-20 12:21:33,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cbef2fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:21:33, skipping insertion in model container [2022-11-20 12:21:33,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:21:33" (3/3) ... [2022-11-20 12:21:33,763 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.1.ufo.UNBOUNDED.pals.c [2022-11-20 12:21:33,788 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:21:33,788 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 12:21:33,867 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:21:33,875 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;@3cd3d4cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:21:33,875 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 12:21:33,884 INFO L276 IsEmpty]: Start isEmpty. Operand has 656 states, 654 states have (on average 1.8623853211009174) internal successors, (1218), 655 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:21:33,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-11-20 12:21:33,908 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:21:33,909 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:21:33,910 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:21:33,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:21:33,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1138719893, now seen corresponding path program 1 times [2022-11-20 12:21:33,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:21:33,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767022420] [2022-11-20 12:21:33,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:21:33,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:21:34,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:21:34,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:21:34,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:21:34,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767022420] [2022-11-20 12:21:34,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767022420] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:21:34,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:21:34,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:21:34,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685579162] [2022-11-20 12:21:34,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:21:34,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 12:21:34,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:21:34,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 12:21:34,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 12:21:34,844 INFO L87 Difference]: Start difference. First operand has 656 states, 654 states have (on average 1.8623853211009174) internal successors, (1218), 655 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:21:34,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:21:34,920 INFO L93 Difference]: Finished difference Result 783 states and 1447 transitions. [2022-11-20 12:21:34,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 12:21:34,923 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 153 [2022-11-20 12:21:34,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:21:34,943 INFO L225 Difference]: With dead ends: 783 [2022-11-20 12:21:34,943 INFO L226 Difference]: Without dead ends: 652 [2022-11-20 12:21:34,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 12:21:34,955 INFO L413 NwaCegarLoop]: 1211 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:21:34,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1211 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:21:34,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2022-11-20 12:21:35,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 652. [2022-11-20 12:21:35,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 651 states have (on average 1.8602150537634408) internal successors, (1211), 651 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:21:35,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 1211 transitions. [2022-11-20 12:21:35,081 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 1211 transitions. Word has length 153 [2022-11-20 12:21:35,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:21:35,084 INFO L495 AbstractCegarLoop]: Abstraction has 652 states and 1211 transitions. [2022-11-20 12:21:35,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:21:35,085 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 1211 transitions. [2022-11-20 12:21:35,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-11-20 12:21:35,097 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:21:35,097 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:21:35,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:21:35,099 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:21:35,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:21:35,100 INFO L85 PathProgramCache]: Analyzing trace with hash 629246803, now seen corresponding path program 1 times [2022-11-20 12:21:35,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:21:35,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049703101] [2022-11-20 12:21:35,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:21:35,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:21:35,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:21:35,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:21:35,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:21:35,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049703101] [2022-11-20 12:21:35,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049703101] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:21:35,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:21:35,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:21:35,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340083711] [2022-11-20 12:21:35,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:21:35,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:21:35,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:21:35,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:21:35,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:21:35,700 INFO L87 Difference]: Start difference. First operand 652 states and 1211 transitions. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:21:35,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:21:35,888 INFO L93 Difference]: Finished difference Result 782 states and 1440 transitions. [2022-11-20 12:21:35,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:21:35,889 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 153 [2022-11-20 12:21:35,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:21:35,894 INFO L225 Difference]: With dead ends: 782 [2022-11-20 12:21:35,895 INFO L226 Difference]: Without dead ends: 652 [2022-11-20 12:21:35,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:21:35,898 INFO L413 NwaCegarLoop]: 1209 mSDtfsCounter, 3 mSDsluCounter, 3584 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 4793 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:21:35,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 4793 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:21:35,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2022-11-20 12:21:35,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 652. [2022-11-20 12:21:35,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 651 states have (on average 1.7987711213517665) internal successors, (1171), 651 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:21:35,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 1171 transitions. [2022-11-20 12:21:35,923 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 1171 transitions. Word has length 153 [2022-11-20 12:21:35,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:21:35,924 INFO L495 AbstractCegarLoop]: Abstraction has 652 states and 1171 transitions. [2022-11-20 12:21:35,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:21:35,925 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 1171 transitions. [2022-11-20 12:21:35,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-11-20 12:21:35,928 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:21:35,928 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:21:35,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:21:35,929 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:21:35,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:21:35,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1924898188, now seen corresponding path program 1 times [2022-11-20 12:21:35,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:21:35,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031216138] [2022-11-20 12:21:35,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:21:35,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:21:36,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:21:36,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:21:36,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:21:36,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031216138] [2022-11-20 12:21:36,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031216138] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:21:36,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:21:36,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:21:36,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227105988] [2022-11-20 12:21:36,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:21:36,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:21:36,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:21:36,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:21:36,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:21:36,283 INFO L87 Difference]: Start difference. First operand 652 states and 1171 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:21:36,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:21:36,372 INFO L93 Difference]: Finished difference Result 891 states and 1596 transitions. [2022-11-20 12:21:36,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:21:36,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 192 [2022-11-20 12:21:36,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:21:36,388 INFO L225 Difference]: With dead ends: 891 [2022-11-20 12:21:36,388 INFO L226 Difference]: Without dead ends: 765 [2022-11-20 12:21:36,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:21:36,400 INFO L413 NwaCegarLoop]: 1165 mSDtfsCounter, 191 mSDsluCounter, 1125 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 2290 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:21:36,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 2290 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:21:36,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2022-11-20 12:21:36,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 762. [2022-11-20 12:21:36,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 761 states have (on average 1.7910643889618922) internal successors, (1363), 761 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:21:36,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1363 transitions. [2022-11-20 12:21:36,458 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1363 transitions. Word has length 192 [2022-11-20 12:21:36,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:21:36,460 INFO L495 AbstractCegarLoop]: Abstraction has 762 states and 1363 transitions. [2022-11-20 12:21:36,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:21:36,461 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1363 transitions. [2022-11-20 12:21:36,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-11-20 12:21:36,466 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:21:36,467 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:21:36,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 12:21:36,467 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:21:36,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:21:36,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1540759936, now seen corresponding path program 1 times [2022-11-20 12:21:36,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:21:36,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518841350] [2022-11-20 12:21:36,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:21:36,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:21:36,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:21:36,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:21:36,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:21:36,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518841350] [2022-11-20 12:21:36,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518841350] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:21:36,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:21:36,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:21:36,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587737749] [2022-11-20 12:21:36,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:21:36,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:21:36,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:21:36,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:21:36,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:21:36,836 INFO L87 Difference]: Start difference. First operand 762 states and 1363 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:21:36,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:21:36,915 INFO L93 Difference]: Finished difference Result 1212 states and 2155 transitions. [2022-11-20 12:21:36,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:21:36,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 196 [2022-11-20 12:21:36,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:21:36,923 INFO L225 Difference]: With dead ends: 1212 [2022-11-20 12:21:36,923 INFO L226 Difference]: Without dead ends: 976 [2022-11-20 12:21:36,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:21:36,939 INFO L413 NwaCegarLoop]: 1168 mSDtfsCounter, 191 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 2302 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:21:36,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 2302 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:21:36,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2022-11-20 12:21:36,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 972. [2022-11-20 12:21:36,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 971 states have (on average 1.7826982492276005) internal successors, (1731), 971 states have internal predecessors, (1731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:21:36,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1731 transitions. [2022-11-20 12:21:37,000 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1731 transitions. Word has length 196 [2022-11-20 12:21:37,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:21:37,001 INFO L495 AbstractCegarLoop]: Abstraction has 972 states and 1731 transitions. [2022-11-20 12:21:37,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:21:37,001 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1731 transitions. [2022-11-20 12:21:37,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-11-20 12:21:37,006 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:21:37,006 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:21:37,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 12:21:37,007 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:21:37,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:21:37,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1524905714, now seen corresponding path program 1 times [2022-11-20 12:21:37,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:21:37,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764872979] [2022-11-20 12:21:37,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:21:37,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:21:37,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:21:37,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:21:37,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:21:37,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764872979] [2022-11-20 12:21:37,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764872979] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:21:37,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:21:37,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:21:37,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936547267] [2022-11-20 12:21:37,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:21:37,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:21:37,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:21:37,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:21:37,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:21:37,395 INFO L87 Difference]: Start difference. First operand 972 states and 1731 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:21:37,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:21:37,490 INFO L93 Difference]: Finished difference Result 1820 states and 3217 transitions. [2022-11-20 12:21:37,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:21:37,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 200 [2022-11-20 12:21:37,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:21:37,498 INFO L225 Difference]: With dead ends: 1820 [2022-11-20 12:21:37,498 INFO L226 Difference]: Without dead ends: 1374 [2022-11-20 12:21:37,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:21:37,501 INFO L413 NwaCegarLoop]: 1168 mSDtfsCounter, 183 mSDsluCounter, 1135 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 2303 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:21:37,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 2303 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:21:37,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1374 states. [2022-11-20 12:21:37,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1374 to 1368. [2022-11-20 12:21:37,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1368 states, 1367 states have (on average 1.7695683979517192) internal successors, (2419), 1367 states have internal predecessors, (2419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:21:37,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1368 states to 1368 states and 2419 transitions. [2022-11-20 12:21:37,557 INFO L78 Accepts]: Start accepts. Automaton has 1368 states and 2419 transitions. Word has length 200 [2022-11-20 12:21:37,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:21:37,558 INFO L495 AbstractCegarLoop]: Abstraction has 1368 states and 2419 transitions. [2022-11-20 12:21:37,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:21:37,564 INFO L276 IsEmpty]: Start isEmpty. Operand 1368 states and 2419 transitions. [2022-11-20 12:21:37,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-11-20 12:21:37,569 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:21:37,569 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:21:37,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 12:21:37,570 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:21:37,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:21:37,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1618984482, now seen corresponding path program 1 times [2022-11-20 12:21:37,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:21:37,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183195748] [2022-11-20 12:21:37,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:21:37,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:21:37,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:21:37,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:21:37,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:21:37,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183195748] [2022-11-20 12:21:37,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183195748] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:21:37,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:21:37,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:21:37,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276548386] [2022-11-20 12:21:37,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:21:37,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:21:37,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:21:37,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:21:37,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:21:37,910 INFO L87 Difference]: Start difference. First operand 1368 states and 2419 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:21:38,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:21:38,010 INFO L93 Difference]: Finished difference Result 2964 states and 5197 transitions. [2022-11-20 12:21:38,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:21:38,011 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 204 [2022-11-20 12:21:38,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:21:38,020 INFO L225 Difference]: With dead ends: 2964 [2022-11-20 12:21:38,021 INFO L226 Difference]: Without dead ends: 2122 [2022-11-20 12:21:38,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:21:38,025 INFO L413 NwaCegarLoop]: 1168 mSDtfsCounter, 175 mSDsluCounter, 1136 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 2304 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:21:38,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 2304 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:21:38,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2122 states. [2022-11-20 12:21:38,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2122 to 2112. [2022-11-20 12:21:38,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2112 states, 2111 states have (on average 1.7522501184272856) internal successors, (3699), 2111 states have internal predecessors, (3699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:21:38,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2112 states to 2112 states and 3699 transitions. [2022-11-20 12:21:38,145 INFO L78 Accepts]: Start accepts. Automaton has 2112 states and 3699 transitions. Word has length 204 [2022-11-20 12:21:38,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:21:38,145 INFO L495 AbstractCegarLoop]: Abstraction has 2112 states and 3699 transitions. [2022-11-20 12:21:38,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:21:38,146 INFO L276 IsEmpty]: Start isEmpty. Operand 2112 states and 3699 transitions. [2022-11-20 12:21:38,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-11-20 12:21:38,151 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:21:38,151 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:21:38,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 12:21:38,152 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:21:38,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:21:38,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1799287382, now seen corresponding path program 1 times [2022-11-20 12:21:38,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:21:38,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129395190] [2022-11-20 12:21:38,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:21:38,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:21:38,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:21:38,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:21:38,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:21:38,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129395190] [2022-11-20 12:21:38,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129395190] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:21:38,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:21:38,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:21:38,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141647271] [2022-11-20 12:21:38,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:21:38,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:21:38,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:21:38,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:21:38,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:21:38,472 INFO L87 Difference]: Start difference. First operand 2112 states and 3699 transitions. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:21:38,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:21:38,655 INFO L93 Difference]: Finished difference Result 5108 states and 8869 transitions. [2022-11-20 12:21:38,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:21:38,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 208 [2022-11-20 12:21:38,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:21:38,672 INFO L225 Difference]: With dead ends: 5108 [2022-11-20 12:21:38,673 INFO L226 Difference]: Without dead ends: 3522 [2022-11-20 12:21:38,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:21:38,680 INFO L413 NwaCegarLoop]: 1168 mSDtfsCounter, 167 mSDsluCounter, 1137 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 2305 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:21:38,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 2305 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:21:38,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3522 states. [2022-11-20 12:21:38,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3522 to 3504. [2022-11-20 12:21:38,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3504 states, 3503 states have (on average 1.7319440479588923) internal successors, (6067), 3503 states have internal predecessors, (6067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:21:38,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3504 states to 3504 states and 6067 transitions. [2022-11-20 12:21:38,903 INFO L78 Accepts]: Start accepts. Automaton has 3504 states and 6067 transitions. Word has length 208 [2022-11-20 12:21:38,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:21:38,904 INFO L495 AbstractCegarLoop]: Abstraction has 3504 states and 6067 transitions. [2022-11-20 12:21:38,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:21:38,904 INFO L276 IsEmpty]: Start isEmpty. Operand 3504 states and 6067 transitions. [2022-11-20 12:21:38,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-11-20 12:21:38,910 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:21:38,910 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:21:38,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 12:21:38,911 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:21:38,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:21:38,911 INFO L85 PathProgramCache]: Analyzing trace with hash -945522890, now seen corresponding path program 1 times [2022-11-20 12:21:38,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:21:38,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375551937] [2022-11-20 12:21:38,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:21:38,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:21:38,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:21:39,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:21:39,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:21:39,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375551937] [2022-11-20 12:21:39,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375551937] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:21:39,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:21:39,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:21:39,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388734482] [2022-11-20 12:21:39,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:21:39,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:21:39,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:21:39,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:21:39,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:21:39,460 INFO L87 Difference]: Start difference. First operand 3504 states and 6067 transitions. Second operand has 7 states, 7 states have (on average 30.285714285714285) internal successors, (212), 7 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:21:40,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:21:40,977 INFO L93 Difference]: Finished difference Result 20660 states and 35933 transitions. [2022-11-20 12:21:40,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:21:40,978 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 30.285714285714285) internal successors, (212), 7 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 212 [2022-11-20 12:21:40,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:21:41,077 INFO L225 Difference]: With dead ends: 20660 [2022-11-20 12:21:41,077 INFO L226 Difference]: Without dead ends: 17682 [2022-11-20 12:21:41,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-11-20 12:21:41,090 INFO L413 NwaCegarLoop]: 1173 mSDtfsCounter, 2478 mSDsluCounter, 8721 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2478 SdHoareTripleChecker+Valid, 9894 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:21:41,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2478 Valid, 9894 Invalid, 311 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:21:41,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17682 states. [2022-11-20 12:21:41,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17682 to 6358. [2022-11-20 12:21:41,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6358 states, 6357 states have (on average 1.7253421425200566) internal successors, (10968), 6357 states have internal predecessors, (10968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:21:41,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6358 states to 6358 states and 10968 transitions. [2022-11-20 12:21:41,776 INFO L78 Accepts]: Start accepts. Automaton has 6358 states and 10968 transitions. Word has length 212 [2022-11-20 12:21:41,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:21:41,777 INFO L495 AbstractCegarLoop]: Abstraction has 6358 states and 10968 transitions. [2022-11-20 12:21:41,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 30.285714285714285) internal successors, (212), 7 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:21:41,777 INFO L276 IsEmpty]: Start isEmpty. Operand 6358 states and 10968 transitions. [2022-11-20 12:21:41,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-11-20 12:21:41,784 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:21:41,785 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:21:41,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 12:21:41,787 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:21:41,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:21:41,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1512818172, now seen corresponding path program 1 times [2022-11-20 12:21:41,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:21:41,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57438012] [2022-11-20 12:21:41,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:21:41,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:21:41,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:21:42,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:21:42,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:21:42,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57438012] [2022-11-20 12:21:42,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57438012] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:21:42,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:21:42,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:21:42,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137237887] [2022-11-20 12:21:42,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:21:42,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:21:42,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:21:42,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:21:42,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:21:42,212 INFO L87 Difference]: Start difference. First operand 6358 states and 10968 transitions. Second operand has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:21:43,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:21:43,087 INFO L93 Difference]: Finished difference Result 18442 states and 31936 transitions. [2022-11-20 12:21:43,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:21:43,088 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 213 [2022-11-20 12:21:43,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:21:43,123 INFO L225 Difference]: With dead ends: 18442 [2022-11-20 12:21:43,123 INFO L226 Difference]: Without dead ends: 12610 [2022-11-20 12:21:43,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:21:43,136 INFO L413 NwaCegarLoop]: 1164 mSDtfsCounter, 641 mSDsluCounter, 2492 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 3656 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:21:43,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [641 Valid, 3656 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:21:43,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12610 states. [2022-11-20 12:21:43,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12610 to 9451. [2022-11-20 12:21:43,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9451 states, 9450 states have (on average 1.7265608465608466) internal successors, (16316), 9450 states have internal predecessors, (16316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:21:44,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9451 states to 9451 states and 16316 transitions. [2022-11-20 12:21:44,042 INFO L78 Accepts]: Start accepts. Automaton has 9451 states and 16316 transitions. Word has length 213 [2022-11-20 12:21:44,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:21:44,043 INFO L495 AbstractCegarLoop]: Abstraction has 9451 states and 16316 transitions. [2022-11-20 12:21:44,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:21:44,043 INFO L276 IsEmpty]: Start isEmpty. Operand 9451 states and 16316 transitions. [2022-11-20 12:21:44,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-11-20 12:21:44,057 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:21:44,058 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:21:44,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 12:21:44,058 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:21:44,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:21:44,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1750098387, now seen corresponding path program 1 times [2022-11-20 12:21:44,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:21:44,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221704188] [2022-11-20 12:21:44,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:21:44,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:21:44,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:21:44,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:21:44,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:21:44,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221704188] [2022-11-20 12:21:44,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221704188] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:21:44,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:21:44,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:21:44,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834612999] [2022-11-20 12:21:44,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:21:44,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:21:44,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:21:44,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:21:44,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:21:44,428 INFO L87 Difference]: Start difference. First operand 9451 states and 16316 transitions. Second operand has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:21:45,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:21:45,582 INFO L93 Difference]: Finished difference Result 27698 states and 47898 transitions. [2022-11-20 12:21:45,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:21:45,583 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 214 [2022-11-20 12:21:45,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:21:45,635 INFO L225 Difference]: With dead ends: 27698 [2022-11-20 12:21:45,635 INFO L226 Difference]: Without dead ends: 18773 [2022-11-20 12:21:45,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:21:45,649 INFO L413 NwaCegarLoop]: 1168 mSDtfsCounter, 639 mSDsluCounter, 2494 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 3662 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:21:45,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [639 Valid, 3662 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:21:45,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18773 states. [2022-11-20 12:21:46,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18773 to 14064. [2022-11-20 12:21:46,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14064 states, 14063 states have (on average 1.723458721467681) internal successors, (24237), 14063 states have internal predecessors, (24237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:21:46,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14064 states to 14064 states and 24237 transitions. [2022-11-20 12:21:46,785 INFO L78 Accepts]: Start accepts. Automaton has 14064 states and 24237 transitions. Word has length 214 [2022-11-20 12:21:46,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:21:46,786 INFO L495 AbstractCegarLoop]: Abstraction has 14064 states and 24237 transitions. [2022-11-20 12:21:46,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:21:46,787 INFO L276 IsEmpty]: Start isEmpty. Operand 14064 states and 24237 transitions. [2022-11-20 12:21:46,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-11-20 12:21:46,799 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:21:46,799 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:21:46,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 12:21:46,800 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:21:46,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:21:46,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1101480715, now seen corresponding path program 1 times [2022-11-20 12:21:46,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:21:46,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842420546] [2022-11-20 12:21:46,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:21:46,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:21:46,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:21:47,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:21:47,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:21:47,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842420546] [2022-11-20 12:21:47,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842420546] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:21:47,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:21:47,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:21:47,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067899231] [2022-11-20 12:21:47,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:21:47,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:21:47,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:21:47,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:21:47,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:21:47,042 INFO L87 Difference]: Start difference. First operand 14064 states and 24237 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:21:48,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:21:48,847 INFO L93 Difference]: Finished difference Result 31433 states and 54329 transitions. [2022-11-20 12:21:48,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:21:48,848 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 215 [2022-11-20 12:21:48,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:21:48,910 INFO L225 Difference]: With dead ends: 31433 [2022-11-20 12:21:48,910 INFO L226 Difference]: Without dead ends: 21879 [2022-11-20 12:21:48,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:21:48,927 INFO L413 NwaCegarLoop]: 1348 mSDtfsCounter, 198 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 2494 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:21:48,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 2494 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:21:48,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21879 states. [2022-11-20 12:21:50,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21879 to 21877. [2022-11-20 12:21:50,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21877 states, 21876 states have (on average 1.7182757359663559) internal successors, (37589), 21876 states have internal predecessors, (37589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:21:50,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21877 states to 21877 states and 37589 transitions. [2022-11-20 12:21:50,371 INFO L78 Accepts]: Start accepts. Automaton has 21877 states and 37589 transitions. Word has length 215 [2022-11-20 12:21:50,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:21:50,372 INFO L495 AbstractCegarLoop]: Abstraction has 21877 states and 37589 transitions. [2022-11-20 12:21:50,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:21:50,372 INFO L276 IsEmpty]: Start isEmpty. Operand 21877 states and 37589 transitions. [2022-11-20 12:21:50,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-11-20 12:21:50,379 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:21:50,379 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:21:50,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 12:21:50,380 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:21:50,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:21:50,380 INFO L85 PathProgramCache]: Analyzing trace with hash -131457689, now seen corresponding path program 1 times [2022-11-20 12:21:50,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:21:50,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796520621] [2022-11-20 12:21:50,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:21:50,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:21:50,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:21:50,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:21:50,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:21:50,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796520621] [2022-11-20 12:21:50,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796520621] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:21:50,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:21:50,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:21:50,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653044080] [2022-11-20 12:21:50,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:21:50,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:21:50,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:21:50,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:21:50,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:21:50,620 INFO L87 Difference]: Start difference. First operand 21877 states and 37589 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:21:52,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:21:52,403 INFO L93 Difference]: Finished difference Result 42842 states and 73647 transitions. [2022-11-20 12:21:52,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:21:52,409 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 215 [2022-11-20 12:21:52,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:21:52,533 INFO L225 Difference]: With dead ends: 42842 [2022-11-20 12:21:52,533 INFO L226 Difference]: Without dead ends: 31236 [2022-11-20 12:21:52,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:21:52,559 INFO L413 NwaCegarLoop]: 1309 mSDtfsCounter, 182 mSDsluCounter, 1148 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 2457 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:21:52,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 2457 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:21:52,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31236 states. [2022-11-20 12:21:54,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31236 to 31234. [2022-11-20 12:21:54,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31234 states, 31233 states have (on average 1.710402458937662) internal successors, (53421), 31233 states have internal predecessors, (53421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:21:54,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31234 states to 31234 states and 53421 transitions. [2022-11-20 12:21:54,784 INFO L78 Accepts]: Start accepts. Automaton has 31234 states and 53421 transitions. Word has length 215 [2022-11-20 12:21:54,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:21:54,785 INFO L495 AbstractCegarLoop]: Abstraction has 31234 states and 53421 transitions. [2022-11-20 12:21:54,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:21:54,786 INFO L276 IsEmpty]: Start isEmpty. Operand 31234 states and 53421 transitions. [2022-11-20 12:21:54,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-11-20 12:21:54,792 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:21:54,792 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:21:54,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 12:21:54,793 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:21:54,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:21:54,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1798566816, now seen corresponding path program 1 times [2022-11-20 12:21:54,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:21:54,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084198969] [2022-11-20 12:21:54,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:21:54,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:21:54,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:21:55,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:21:55,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:21:55,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084198969] [2022-11-20 12:21:55,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084198969] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:21:55,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:21:55,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:21:55,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973130551] [2022-11-20 12:21:55,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:21:55,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:21:55,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:21:55,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:21:55,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:21:55,195 INFO L87 Difference]: Start difference. First operand 31234 states and 53421 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:21:57,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:21:57,421 INFO L93 Difference]: Finished difference Result 61094 states and 104587 transitions. [2022-11-20 12:21:57,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:21:57,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 215 [2022-11-20 12:21:57,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:21:57,512 INFO L225 Difference]: With dead ends: 61094 [2022-11-20 12:21:57,512 INFO L226 Difference]: Without dead ends: 44468 [2022-11-20 12:21:57,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:21:57,534 INFO L413 NwaCegarLoop]: 1297 mSDtfsCounter, 174 mSDsluCounter, 1149 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 2446 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:21:57,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 2446 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:21:57,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44468 states. [2022-11-20 12:21:59,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44468 to 44466. [2022-11-20 12:21:59,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44466 states, 44465 states have (on average 1.7023051838524683) internal successors, (75693), 44465 states have internal predecessors, (75693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:00,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44466 states to 44466 states and 75693 transitions. [2022-11-20 12:22:00,112 INFO L78 Accepts]: Start accepts. Automaton has 44466 states and 75693 transitions. Word has length 215 [2022-11-20 12:22:00,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:22:00,113 INFO L495 AbstractCegarLoop]: Abstraction has 44466 states and 75693 transitions. [2022-11-20 12:22:00,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:00,114 INFO L276 IsEmpty]: Start isEmpty. Operand 44466 states and 75693 transitions. [2022-11-20 12:22:00,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-11-20 12:22:00,118 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:22:00,118 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:22:00,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 12:22:00,119 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:22:00,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:22:00,120 INFO L85 PathProgramCache]: Analyzing trace with hash -346846117, now seen corresponding path program 1 times [2022-11-20 12:22:00,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:22:00,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886503210] [2022-11-20 12:22:00,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:22:00,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:22:00,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:00,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:22:00,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:22:00,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886503210] [2022-11-20 12:22:00,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886503210] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:22:00,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:22:00,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:22:00,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424247603] [2022-11-20 12:22:00,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:22:00,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:22:00,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:22:00,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:22:00,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:22:00,434 INFO L87 Difference]: Start difference. First operand 44466 states and 75693 transitions. Second operand has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:05,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:22:05,184 INFO L93 Difference]: Finished difference Result 146267 states and 249360 transitions. [2022-11-20 12:22:05,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:22:05,184 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 215 [2022-11-20 12:22:05,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:22:05,403 INFO L225 Difference]: With dead ends: 146267 [2022-11-20 12:22:05,403 INFO L226 Difference]: Without dead ends: 102398 [2022-11-20 12:22:05,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:22:05,489 INFO L413 NwaCegarLoop]: 1160 mSDtfsCounter, 637 mSDsluCounter, 2496 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 3656 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:22:05,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [637 Valid, 3656 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:22:05,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102398 states. [2022-11-20 12:22:09,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102398 to 73256. [2022-11-20 12:22:09,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73256 states, 73255 states have (on average 1.6972902873523992) internal successors, (124335), 73255 states have internal predecessors, (124335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:09,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73256 states to 73256 states and 124335 transitions. [2022-11-20 12:22:09,688 INFO L78 Accepts]: Start accepts. Automaton has 73256 states and 124335 transitions. Word has length 215 [2022-11-20 12:22:09,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:22:09,689 INFO L495 AbstractCegarLoop]: Abstraction has 73256 states and 124335 transitions. [2022-11-20 12:22:09,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:09,689 INFO L276 IsEmpty]: Start isEmpty. Operand 73256 states and 124335 transitions. [2022-11-20 12:22:09,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-11-20 12:22:09,917 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:22:09,918 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:22:09,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 12:22:09,918 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:22:09,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:22:09,918 INFO L85 PathProgramCache]: Analyzing trace with hash 520458909, now seen corresponding path program 1 times [2022-11-20 12:22:09,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:22:09,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412041341] [2022-11-20 12:22:09,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:22:09,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:22:09,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:10,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:22:10,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:22:10,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412041341] [2022-11-20 12:22:10,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412041341] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:22:10,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:22:10,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:22:10,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762994540] [2022-11-20 12:22:10,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:22:10,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:22:10,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:22:10,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:22:10,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:22:10,153 INFO L87 Difference]: Start difference. First operand 73256 states and 124335 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:15,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:22:15,518 INFO L93 Difference]: Finished difference Result 144066 states and 244783 transitions. [2022-11-20 12:22:15,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:22:15,519 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 215 [2022-11-20 12:22:15,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:22:15,737 INFO L225 Difference]: With dead ends: 144066 [2022-11-20 12:22:15,737 INFO L226 Difference]: Without dead ends: 104400 [2022-11-20 12:22:15,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:22:15,775 INFO L413 NwaCegarLoop]: 1285 mSDtfsCounter, 166 mSDsluCounter, 1150 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 2435 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:22:15,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 2435 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:22:15,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104400 states. [2022-11-20 12:22:21,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104400 to 104398. [2022-11-20 12:22:21,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104398 states, 104397 states have (on average 1.68829564067933) internal successors, (176253), 104397 states have internal predecessors, (176253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:21,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104398 states to 104398 states and 176253 transitions. [2022-11-20 12:22:21,316 INFO L78 Accepts]: Start accepts. Automaton has 104398 states and 176253 transitions. Word has length 215 [2022-11-20 12:22:21,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:22:21,317 INFO L495 AbstractCegarLoop]: Abstraction has 104398 states and 176253 transitions. [2022-11-20 12:22:21,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:21,317 INFO L276 IsEmpty]: Start isEmpty. Operand 104398 states and 176253 transitions. [2022-11-20 12:22:21,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-11-20 12:22:21,320 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:22:21,321 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:22:21,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 12:22:21,321 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:22:21,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:22:21,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1348328336, now seen corresponding path program 1 times [2022-11-20 12:22:21,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:22:21,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234872913] [2022-11-20 12:22:21,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:22:21,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:22:21,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:21,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:22:21,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:22:21,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234872913] [2022-11-20 12:22:21,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234872913] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:22:21,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:22:21,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:22:21,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463886610] [2022-11-20 12:22:21,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:22:21,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:22:21,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:22:21,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:22:21,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:22:21,496 INFO L87 Difference]: Start difference. First operand 104398 states and 176253 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)