./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem19_label21.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b55992-0c36-4842-91fd-ef8ec64db0d6/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b55992-0c36-4842-91fd-ef8ec64db0d6/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b55992-0c36-4842-91fd-ef8ec64db0d6/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b55992-0c36-4842-91fd-ef8ec64db0d6/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem19_label21.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b55992-0c36-4842-91fd-ef8ec64db0d6/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b55992-0c36-4842-91fd-ef8ec64db0d6/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 259e20ec3dce8325954803d27c5affb1e2b628aaa79b98f511469a5a906aac01 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 17:24:48,959 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:24:48,962 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:24:48,997 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:24:49,003 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:24:49,005 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:24:49,007 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:24:49,011 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:24:49,013 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:24:49,014 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:24:49,017 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:24:49,020 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:24:49,021 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:24:49,024 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:24:49,026 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:24:49,028 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:24:49,030 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:24:49,035 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:24:49,036 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:24:49,038 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:24:49,043 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:24:49,044 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:24:49,047 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:24:49,048 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:24:49,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:24:49,059 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:24:49,059 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:24:49,060 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:24:49,061 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:24:49,062 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:24:49,064 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:24:49,065 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:24:49,066 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:24:49,067 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:24:49,069 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:24:49,070 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:24:49,071 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:24:49,072 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:24:49,072 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:24:49,074 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:24:49,075 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:24:49,076 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b55992-0c36-4842-91fd-ef8ec64db0d6/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 17:24:49,103 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:24:49,103 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:24:49,104 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:24:49,104 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:24:49,105 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:24:49,105 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:24:49,105 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:24:49,106 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:24:49,106 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:24:49,106 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:24:49,106 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:24:49,107 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:24:49,107 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:24:49,107 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:24:49,107 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:24:49,108 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:24:49,108 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:24:49,108 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:24:49,108 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:24:49,108 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:24:49,108 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:24:49,109 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:24:49,109 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:24:49,109 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:24:49,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:24:49,110 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:24:49,110 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:24:49,110 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:24:49,111 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:24:49,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:24:49,111 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:24:49,112 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:24:49,112 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:24:49,112 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:24:49,112 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b55992-0c36-4842-91fd-ef8ec64db0d6/bin/uautomizer-ZsLfNo2U6R/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b55992-0c36-4842-91fd-ef8ec64db0d6/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 259e20ec3dce8325954803d27c5affb1e2b628aaa79b98f511469a5a906aac01 [2022-11-25 17:24:49,419 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:24:49,459 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:24:49,463 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:24:49,464 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:24:49,464 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:24:49,466 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b55992-0c36-4842-91fd-ef8ec64db0d6/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/eca-rers2012/Problem19_label21.c [2022-11-25 17:24:52,545 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:24:53,271 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:24:53,307 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b55992-0c36-4842-91fd-ef8ec64db0d6/sv-benchmarks/c/eca-rers2012/Problem19_label21.c [2022-11-25 17:24:53,420 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b55992-0c36-4842-91fd-ef8ec64db0d6/bin/uautomizer-ZsLfNo2U6R/data/6c250c809/70bd16f185fe4eb59dbd0d8ca65238ea/FLAGbdaee85ed [2022-11-25 17:24:53,439 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b55992-0c36-4842-91fd-ef8ec64db0d6/bin/uautomizer-ZsLfNo2U6R/data/6c250c809/70bd16f185fe4eb59dbd0d8ca65238ea [2022-11-25 17:24:53,443 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:24:53,446 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:24:53,451 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:24:53,451 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:24:53,454 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:24:53,455 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:24:53" (1/1) ... [2022-11-25 17:24:53,456 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bac1f4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:24:53, skipping insertion in model container [2022-11-25 17:24:53,457 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:24:53" (1/1) ... [2022-11-25 17:24:53,464 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:24:53,636 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:24:53,955 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_97b55992-0c36-4842-91fd-ef8ec64db0d6/sv-benchmarks/c/eca-rers2012/Problem19_label21.c[2361,2374] [2022-11-25 17:24:55,765 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:24:55,776 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:24:55,810 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_97b55992-0c36-4842-91fd-ef8ec64db0d6/sv-benchmarks/c/eca-rers2012/Problem19_label21.c[2361,2374] [2022-11-25 17:24:56,907 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:24:56,951 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:24:56,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:24:56 WrapperNode [2022-11-25 17:24:56,952 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:24:56,954 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:24:56,954 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:24:56,954 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:24:56,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:24:56" (1/1) ... [2022-11-25 17:24:57,085 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:24:56" (1/1) ... [2022-11-25 17:24:58,151 INFO L138 Inliner]: procedures = 19, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 9425 [2022-11-25 17:24:58,152 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:24:58,152 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:24:58,153 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:24:58,153 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:24:58,176 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:24:56" (1/1) ... [2022-11-25 17:24:58,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:24:56" (1/1) ... [2022-11-25 17:24:58,520 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:24:56" (1/1) ... [2022-11-25 17:24:58,528 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:24:56" (1/1) ... [2022-11-25 17:24:59,081 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:24:56" (1/1) ... [2022-11-25 17:24:59,121 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:24:56" (1/1) ... [2022-11-25 17:24:59,218 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:24:56" (1/1) ... [2022-11-25 17:24:59,238 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:24:56" (1/1) ... [2022-11-25 17:24:59,474 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:24:59,477 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:24:59,477 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:24:59,477 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:24:59,478 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:24:56" (1/1) ... [2022-11-25 17:24:59,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:24:59,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b55992-0c36-4842-91fd-ef8ec64db0d6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:24:59,515 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b55992-0c36-4842-91fd-ef8ec64db0d6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:24:59,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b55992-0c36-4842-91fd-ef8ec64db0d6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:24:59,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:24:59,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:24:59,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:24:59,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:24:59,678 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:24:59,680 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:25:10,057 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:25:10,088 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:25:10,088 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 17:25:10,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:25:10 BoogieIcfgContainer [2022-11-25 17:25:10,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:25:10,097 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:25:10,097 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:25:10,101 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:25:10,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:24:53" (1/3) ... [2022-11-25 17:25:10,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e3430ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:25:10, skipping insertion in model container [2022-11-25 17:25:10,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:24:56" (2/3) ... [2022-11-25 17:25:10,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e3430ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:25:10, skipping insertion in model container [2022-11-25 17:25:10,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:25:10" (3/3) ... [2022-11-25 17:25:10,104 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label21.c [2022-11-25 17:25:10,126 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:25:10,126 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 17:25:10,262 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:25:10,273 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;@4740e82d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:25:10,274 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 17:25:10,285 INFO L276 IsEmpty]: Start isEmpty. Operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 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) [2022-11-25 17:25:10,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-25 17:25:10,294 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:25:10,295 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:25:10,296 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:25:10,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:25:10,302 INFO L85 PathProgramCache]: Analyzing trace with hash -884752143, now seen corresponding path program 1 times [2022-11-25 17:25:10,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:25:10,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302446565] [2022-11-25 17:25:10,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:25:10,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:25:10,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:25:10,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:25:10,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:25:10,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302446565] [2022-11-25 17:25:10,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302446565] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:25:10,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:25:10,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:25:10,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942204516] [2022-11-25 17:25:10,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:25:10,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:25:10,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:25:10,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:25:10,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:25:10,745 INFO L87 Difference]: Start difference. First operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 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 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 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) [2022-11-25 17:25:20,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:25:20,789 INFO L93 Difference]: Finished difference Result 4975 states and 9416 transitions. [2022-11-25 17:25:20,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:25:20,792 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 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 15 [2022-11-25 17:25:20,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:25:20,827 INFO L225 Difference]: With dead ends: 4975 [2022-11-25 17:25:20,827 INFO L226 Difference]: Without dead ends: 3163 [2022-11-25 17:25:20,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:25:20,840 INFO L413 NwaCegarLoop]: 1353 mSDtfsCounter, 1531 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 4670 mSolverCounterSat, 1123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1531 SdHoareTripleChecker+Valid, 1524 SdHoareTripleChecker+Invalid, 5793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1123 IncrementalHoareTripleChecker+Valid, 4670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-11-25 17:25:20,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1531 Valid, 1524 Invalid, 5793 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1123 Valid, 4670 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2022-11-25 17:25:20,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3163 states. [2022-11-25 17:25:20,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3163 to 3123. [2022-11-25 17:25:20,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3123 states, 3122 states have (on average 1.6268417680973735) internal successors, (5079), 3122 states have internal predecessors, (5079), 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) [2022-11-25 17:25:20,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3123 states to 3123 states and 5079 transitions. [2022-11-25 17:25:20,991 INFO L78 Accepts]: Start accepts. Automaton has 3123 states and 5079 transitions. Word has length 15 [2022-11-25 17:25:20,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:25:20,992 INFO L495 AbstractCegarLoop]: Abstraction has 3123 states and 5079 transitions. [2022-11-25 17:25:20,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 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) [2022-11-25 17:25:20,992 INFO L276 IsEmpty]: Start isEmpty. Operand 3123 states and 5079 transitions. [2022-11-25 17:25:20,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-25 17:25:20,994 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:25:20,995 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:25:20,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:25:20,995 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:25:20,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:25:20,996 INFO L85 PathProgramCache]: Analyzing trace with hash -843567897, now seen corresponding path program 1 times [2022-11-25 17:25:20,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:25:20,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226656554] [2022-11-25 17:25:20,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:25:20,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:25:21,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:25:21,263 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:25:21,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:25:21,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226656554] [2022-11-25 17:25:21,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226656554] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:25:21,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:25:21,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:25:21,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031571225] [2022-11-25 17:25:21,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:25:21,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:25:21,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:25:21,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:25:21,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:25:21,273 INFO L87 Difference]: Start difference. First operand 3123 states and 5079 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 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) [2022-11-25 17:25:30,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:25:30,476 INFO L93 Difference]: Finished difference Result 9055 states and 14814 transitions. [2022-11-25 17:25:30,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:25:30,478 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 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 86 [2022-11-25 17:25:30,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:25:30,500 INFO L225 Difference]: With dead ends: 9055 [2022-11-25 17:25:30,500 INFO L226 Difference]: Without dead ends: 5934 [2022-11-25 17:25:30,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:25:30,507 INFO L413 NwaCegarLoop]: 1324 mSDtfsCounter, 1536 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 4266 mSolverCounterSat, 1472 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1536 SdHoareTripleChecker+Valid, 1543 SdHoareTripleChecker+Invalid, 5738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1472 IncrementalHoareTripleChecker+Valid, 4266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:25:30,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1536 Valid, 1543 Invalid, 5738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1472 Valid, 4266 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2022-11-25 17:25:30,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5934 states. [2022-11-25 17:25:30,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5934 to 5910. [2022-11-25 17:25:30,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5910 states, 5909 states have (on average 1.4235911321712642) internal successors, (8412), 5909 states have internal predecessors, (8412), 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) [2022-11-25 17:25:30,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5910 states to 5910 states and 8412 transitions. [2022-11-25 17:25:30,638 INFO L78 Accepts]: Start accepts. Automaton has 5910 states and 8412 transitions. Word has length 86 [2022-11-25 17:25:30,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:25:30,639 INFO L495 AbstractCegarLoop]: Abstraction has 5910 states and 8412 transitions. [2022-11-25 17:25:30,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 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) [2022-11-25 17:25:30,640 INFO L276 IsEmpty]: Start isEmpty. Operand 5910 states and 8412 transitions. [2022-11-25 17:25:30,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-25 17:25:30,650 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:25:30,653 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:25:30,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:25:30,654 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:25:30,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:25:30,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1253291785, now seen corresponding path program 1 times [2022-11-25 17:25:30,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:25:30,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733064067] [2022-11-25 17:25:30,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:25:30,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:25:30,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:25:31,188 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:25:31,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:25:31,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733064067] [2022-11-25 17:25:31,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733064067] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:25:31,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:25:31,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:25:31,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163477158] [2022-11-25 17:25:31,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:25:31,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:25:31,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:25:31,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:25:31,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:25:31,192 INFO L87 Difference]: Start difference. First operand 5910 states and 8412 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 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) [2022-11-25 17:25:43,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:25:43,904 INFO L93 Difference]: Finished difference Result 18680 states and 26154 transitions. [2022-11-25 17:25:43,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:25:43,911 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 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 98 [2022-11-25 17:25:43,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:25:43,959 INFO L225 Difference]: With dead ends: 18680 [2022-11-25 17:25:43,960 INFO L226 Difference]: Without dead ends: 12772 [2022-11-25 17:25:43,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:25:43,976 INFO L413 NwaCegarLoop]: 1008 mSDtfsCounter, 4365 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 7341 mSolverCounterSat, 2200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4365 SdHoareTripleChecker+Valid, 1283 SdHoareTripleChecker+Invalid, 9541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2200 IncrementalHoareTripleChecker+Valid, 7341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2022-11-25 17:25:43,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4365 Valid, 1283 Invalid, 9541 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2200 Valid, 7341 Invalid, 0 Unknown, 0 Unchecked, 12.3s Time] [2022-11-25 17:25:43,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12772 states. [2022-11-25 17:25:44,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12772 to 12761. [2022-11-25 17:25:44,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12761 states, 12760 states have (on average 1.3467084639498432) internal successors, (17184), 12760 states have internal predecessors, (17184), 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) [2022-11-25 17:25:44,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12761 states to 12761 states and 17184 transitions. [2022-11-25 17:25:44,314 INFO L78 Accepts]: Start accepts. Automaton has 12761 states and 17184 transitions. Word has length 98 [2022-11-25 17:25:44,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:25:44,316 INFO L495 AbstractCegarLoop]: Abstraction has 12761 states and 17184 transitions. [2022-11-25 17:25:44,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 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) [2022-11-25 17:25:44,316 INFO L276 IsEmpty]: Start isEmpty. Operand 12761 states and 17184 transitions. [2022-11-25 17:25:44,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2022-11-25 17:25:44,331 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:25:44,332 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:25:44,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 17:25:44,333 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:25:44,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:25:44,335 INFO L85 PathProgramCache]: Analyzing trace with hash -894033946, now seen corresponding path program 1 times [2022-11-25 17:25:44,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:25:44,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259881935] [2022-11-25 17:25:44,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:25:44,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:25:44,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:25:46,000 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-25 17:25:46,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:25:46,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259881935] [2022-11-25 17:25:46,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259881935] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:25:46,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:25:46,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:25:46,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092869997] [2022-11-25 17:25:46,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:25:46,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:25:46,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:25:46,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:25:46,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:25:46,007 INFO L87 Difference]: Start difference. First operand 12761 states and 17184 transitions. Second operand has 4 states, 4 states have (on average 85.0) internal successors, (340), 3 states have internal predecessors, (340), 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) [2022-11-25 17:25:59,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:25:59,238 INFO L93 Difference]: Finished difference Result 31026 states and 41181 transitions. [2022-11-25 17:25:59,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:25:59,239 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 85.0) internal successors, (340), 3 states have internal predecessors, (340), 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 352 [2022-11-25 17:25:59,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:25:59,287 INFO L225 Difference]: With dead ends: 31026 [2022-11-25 17:25:59,287 INFO L226 Difference]: Without dead ends: 19632 [2022-11-25 17:25:59,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:25:59,302 INFO L413 NwaCegarLoop]: 1799 mSDtfsCounter, 3758 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 9440 mSolverCounterSat, 424 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3758 SdHoareTripleChecker+Valid, 2153 SdHoareTripleChecker+Invalid, 9864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 424 IncrementalHoareTripleChecker+Valid, 9440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2022-11-25 17:25:59,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3758 Valid, 2153 Invalid, 9864 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [424 Valid, 9440 Invalid, 0 Unknown, 0 Unchecked, 12.8s Time] [2022-11-25 17:25:59,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19632 states. [2022-11-25 17:25:59,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19632 to 19608. [2022-11-25 17:25:59,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19608 states, 19607 states have (on average 1.2585811189881164) internal successors, (24677), 19607 states have internal predecessors, (24677), 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) [2022-11-25 17:25:59,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19608 states to 19608 states and 24677 transitions. [2022-11-25 17:25:59,648 INFO L78 Accepts]: Start accepts. Automaton has 19608 states and 24677 transitions. Word has length 352 [2022-11-25 17:25:59,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:25:59,649 INFO L495 AbstractCegarLoop]: Abstraction has 19608 states and 24677 transitions. [2022-11-25 17:25:59,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.0) internal successors, (340), 3 states have internal predecessors, (340), 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) [2022-11-25 17:25:59,651 INFO L276 IsEmpty]: Start isEmpty. Operand 19608 states and 24677 transitions. [2022-11-25 17:25:59,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2022-11-25 17:25:59,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:25:59,658 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:25:59,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 17:25:59,659 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:25:59,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:25:59,659 INFO L85 PathProgramCache]: Analyzing trace with hash -87675188, now seen corresponding path program 1 times [2022-11-25 17:25:59,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:25:59,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470837764] [2022-11-25 17:25:59,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:25:59,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:25:59,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:00,588 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:26:00,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:26:00,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470837764] [2022-11-25 17:26:00,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470837764] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:26:00,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:26:00,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:26:00,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089519227] [2022-11-25 17:26:00,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:26:00,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:26:00,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:26:00,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:26:00,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:26:00,594 INFO L87 Difference]: Start difference. First operand 19608 states and 24677 transitions. Second operand has 4 states, 4 states have (on average 95.0) internal successors, (380), 3 states have internal predecessors, (380), 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) [2022-11-25 17:26:10,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:26:10,332 INFO L93 Difference]: Finished difference Result 36515 states and 46635 transitions. [2022-11-25 17:26:10,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:26:10,333 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 95.0) internal successors, (380), 3 states have internal predecessors, (380), 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 380 [2022-11-25 17:26:10,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:26:10,378 INFO L225 Difference]: With dead ends: 36515 [2022-11-25 17:26:10,379 INFO L226 Difference]: Without dead ends: 19608 [2022-11-25 17:26:10,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:26:10,396 INFO L413 NwaCegarLoop]: 1771 mSDtfsCounter, 1138 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 7317 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 2113 SdHoareTripleChecker+Invalid, 7325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 7317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2022-11-25 17:26:10,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1138 Valid, 2113 Invalid, 7325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 7317 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2022-11-25 17:26:10,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19608 states. [2022-11-25 17:26:10,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19608 to 19608. [2022-11-25 17:26:10,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19608 states, 19607 states have (on average 1.2579180904778906) internal successors, (24664), 19607 states have internal predecessors, (24664), 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) [2022-11-25 17:26:10,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19608 states to 19608 states and 24664 transitions. [2022-11-25 17:26:10,714 INFO L78 Accepts]: Start accepts. Automaton has 19608 states and 24664 transitions. Word has length 380 [2022-11-25 17:26:10,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:26:10,720 INFO L495 AbstractCegarLoop]: Abstraction has 19608 states and 24664 transitions. [2022-11-25 17:26:10,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.0) internal successors, (380), 3 states have internal predecessors, (380), 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) [2022-11-25 17:26:10,721 INFO L276 IsEmpty]: Start isEmpty. Operand 19608 states and 24664 transitions. [2022-11-25 17:26:10,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2022-11-25 17:26:10,734 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:26:10,735 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:26:10,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 17:26:10,735 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:26:10,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:26:10,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1693058845, now seen corresponding path program 1 times [2022-11-25 17:26:10,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:26:10,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117044872] [2022-11-25 17:26:10,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:10,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:26:10,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:11,509 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-25 17:26:11,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:26:11,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117044872] [2022-11-25 17:26:11,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117044872] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:26:11,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:26:11,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:26:11,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166523927] [2022-11-25 17:26:11,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:26:11,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:26:11,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:26:11,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:26:11,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:26:11,514 INFO L87 Difference]: Start difference. First operand 19608 states and 24664 transitions. Second operand has 3 states, 3 states have (on average 168.0) internal successors, (504), 2 states have internal predecessors, (504), 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) [2022-11-25 17:26:21,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:26:21,483 INFO L93 Difference]: Finished difference Result 53069 states and 68125 transitions. [2022-11-25 17:26:21,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:26:21,487 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 168.0) internal successors, (504), 2 states have internal predecessors, (504), 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 570 [2022-11-25 17:26:21,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:26:21,569 INFO L225 Difference]: With dead ends: 53069 [2022-11-25 17:26:21,569 INFO L226 Difference]: Without dead ends: 36193 [2022-11-25 17:26:21,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:26:21,591 INFO L413 NwaCegarLoop]: 718 mSDtfsCounter, 2111 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 5117 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2111 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 5551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 5117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-11-25 17:26:21,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2111 Valid, 988 Invalid, 5551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 5117 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2022-11-25 17:26:21,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36193 states. [2022-11-25 17:26:22,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36193 to 36189. [2022-11-25 17:26:22,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36189 states, 36188 states have (on average 1.2502210677572676) internal successors, (45243), 36188 states have internal predecessors, (45243), 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) [2022-11-25 17:26:22,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36189 states to 36189 states and 45243 transitions. [2022-11-25 17:26:22,108 INFO L78 Accepts]: Start accepts. Automaton has 36189 states and 45243 transitions. Word has length 570 [2022-11-25 17:26:22,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:26:22,110 INFO L495 AbstractCegarLoop]: Abstraction has 36189 states and 45243 transitions. [2022-11-25 17:26:22,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.0) internal successors, (504), 2 states have internal predecessors, (504), 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) [2022-11-25 17:26:22,110 INFO L276 IsEmpty]: Start isEmpty. Operand 36189 states and 45243 transitions. [2022-11-25 17:26:22,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 588 [2022-11-25 17:26:22,125 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:26:22,125 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:26:22,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 17:26:22,126 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:26:22,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:26:22,127 INFO L85 PathProgramCache]: Analyzing trace with hash 3304489, now seen corresponding path program 1 times [2022-11-25 17:26:22,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:26:22,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743620817] [2022-11-25 17:26:22,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:22,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:26:22,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:22,710 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-25 17:26:22,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:26:22,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743620817] [2022-11-25 17:26:22,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743620817] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:26:22,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:26:22,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:26:22,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403744579] [2022-11-25 17:26:22,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:26:22,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:26:22,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:26:22,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:26:22,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:26:22,715 INFO L87 Difference]: Start difference. First operand 36189 states and 45243 transitions. Second operand has 3 states, 3 states have (on average 168.0) internal successors, (504), 2 states have internal predecessors, (504), 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) [2022-11-25 17:26:31,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:26:31,140 INFO L93 Difference]: Finished difference Result 80596 states and 102201 transitions. [2022-11-25 17:26:31,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:26:31,141 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 168.0) internal successors, (504), 2 states have internal predecessors, (504), 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 587 [2022-11-25 17:26:31,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:26:31,213 INFO L225 Difference]: With dead ends: 80596 [2022-11-25 17:26:31,213 INFO L226 Difference]: Without dead ends: 47139 [2022-11-25 17:26:31,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:26:31,240 INFO L413 NwaCegarLoop]: 702 mSDtfsCounter, 1387 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 3925 mSolverCounterSat, 2136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1387 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 6061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2136 IncrementalHoareTripleChecker+Valid, 3925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:26:31,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1387 Valid, 752 Invalid, 6061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2136 Valid, 3925 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2022-11-25 17:26:31,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47139 states. [2022-11-25 17:26:31,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47139 to 47122. [2022-11-25 17:26:31,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47122 states, 47121 states have (on average 1.2294306148001952) internal successors, (57932), 47121 states have internal predecessors, (57932), 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) [2022-11-25 17:26:31,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47122 states to 47122 states and 57932 transitions. [2022-11-25 17:26:31,908 INFO L78 Accepts]: Start accepts. Automaton has 47122 states and 57932 transitions. Word has length 587 [2022-11-25 17:26:31,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:26:31,909 INFO L495 AbstractCegarLoop]: Abstraction has 47122 states and 57932 transitions. [2022-11-25 17:26:31,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.0) internal successors, (504), 2 states have internal predecessors, (504), 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) [2022-11-25 17:26:31,910 INFO L276 IsEmpty]: Start isEmpty. Operand 47122 states and 57932 transitions. [2022-11-25 17:26:31,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 626 [2022-11-25 17:26:31,915 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:26:31,916 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:26:31,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 17:26:31,917 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:26:31,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:26:31,917 INFO L85 PathProgramCache]: Analyzing trace with hash -283264241, now seen corresponding path program 1 times [2022-11-25 17:26:31,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:26:31,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054308932] [2022-11-25 17:26:31,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:31,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:26:32,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:32,536 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-11-25 17:26:32,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:26:32,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054308932] [2022-11-25 17:26:32,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054308932] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:26:32,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:26:32,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:26:32,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476334883] [2022-11-25 17:26:32,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:26:32,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:26:32,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:26:32,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:26:32,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:26:32,540 INFO L87 Difference]: Start difference. First operand 47122 states and 57932 transitions. Second operand has 3 states, 3 states have (on average 168.0) internal successors, (504), 2 states have internal predecessors, (504), 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) [2022-11-25 17:26:41,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:26:41,915 INFO L93 Difference]: Finished difference Result 128613 states and 160507 transitions. [2022-11-25 17:26:41,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:26:41,916 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 168.0) internal successors, (504), 2 states have internal predecessors, (504), 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 625 [2022-11-25 17:26:41,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:26:42,012 INFO L225 Difference]: With dead ends: 128613 [2022-11-25 17:26:42,012 INFO L226 Difference]: Without dead ends: 84223 [2022-11-25 17:26:42,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:26:42,048 INFO L413 NwaCegarLoop]: 1793 mSDtfsCounter, 1350 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 4297 mSolverCounterSat, 1430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1350 SdHoareTripleChecker+Valid, 2062 SdHoareTripleChecker+Invalid, 5727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1430 IncrementalHoareTripleChecker+Valid, 4297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-11-25 17:26:42,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1350 Valid, 2062 Invalid, 5727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1430 Valid, 4297 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2022-11-25 17:26:42,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84223 states. [2022-11-25 17:26:43,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84223 to 82831. [2022-11-25 17:26:43,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82831 states, 82830 states have (on average 1.1579741639502596) internal successors, (95915), 82830 states have internal predecessors, (95915), 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) [2022-11-25 17:26:43,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82831 states to 82831 states and 95915 transitions. [2022-11-25 17:26:43,423 INFO L78 Accepts]: Start accepts. Automaton has 82831 states and 95915 transitions. Word has length 625 [2022-11-25 17:26:43,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:26:43,424 INFO L495 AbstractCegarLoop]: Abstraction has 82831 states and 95915 transitions. [2022-11-25 17:26:43,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.0) internal successors, (504), 2 states have internal predecessors, (504), 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) [2022-11-25 17:26:43,425 INFO L276 IsEmpty]: Start isEmpty. Operand 82831 states and 95915 transitions. [2022-11-25 17:26:43,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 800 [2022-11-25 17:26:43,433 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:26:43,434 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:26:43,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 17:26:43,434 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:26:43,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:26:43,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1679955262, now seen corresponding path program 1 times [2022-11-25 17:26:43,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:26:43,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770331360] [2022-11-25 17:26:43,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:43,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:26:44,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:45,085 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 207 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2022-11-25 17:26:45,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:26:45,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770331360] [2022-11-25 17:26:45,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770331360] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:26:45,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:26:45,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:26:45,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979732544] [2022-11-25 17:26:45,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:26:45,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:26:45,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:26:45,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:26:45,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:26:45,091 INFO L87 Difference]: Start difference. First operand 82831 states and 95915 transitions. Second operand has 4 states, 4 states have (on average 147.75) internal successors, (591), 4 states have internal predecessors, (591), 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) [2022-11-25 17:27:01,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:27:01,516 INFO L93 Difference]: Finished difference Result 265595 states and 313044 transitions. [2022-11-25 17:27:01,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:27:01,519 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 147.75) internal successors, (591), 4 states have internal predecessors, (591), 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 799 [2022-11-25 17:27:01,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:27:01,958 INFO L225 Difference]: With dead ends: 265595 [2022-11-25 17:27:01,958 INFO L226 Difference]: Without dead ends: 185496 [2022-11-25 17:27:01,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:27:01,993 INFO L413 NwaCegarLoop]: 894 mSDtfsCounter, 3317 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 8783 mSolverCounterSat, 3100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3317 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 11883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3100 IncrementalHoareTripleChecker+Valid, 8783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.2s IncrementalHoareTripleChecker+Time [2022-11-25 17:27:01,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3317 Valid, 1167 Invalid, 11883 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3100 Valid, 8783 Invalid, 0 Unknown, 0 Unchecked, 15.2s Time] [2022-11-25 17:27:02,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185496 states. [2022-11-25 17:27:04,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185496 to 179882. [2022-11-25 17:27:04,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179882 states, 179881 states have (on average 1.146485732234088) internal successors, (206231), 179881 states have internal predecessors, (206231), 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) [2022-11-25 17:27:05,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179882 states to 179882 states and 206231 transitions. [2022-11-25 17:27:05,085 INFO L78 Accepts]: Start accepts. Automaton has 179882 states and 206231 transitions. Word has length 799 [2022-11-25 17:27:05,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:27:05,086 INFO L495 AbstractCegarLoop]: Abstraction has 179882 states and 206231 transitions. [2022-11-25 17:27:05,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 147.75) internal successors, (591), 4 states have internal predecessors, (591), 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) [2022-11-25 17:27:05,086 INFO L276 IsEmpty]: Start isEmpty. Operand 179882 states and 206231 transitions. [2022-11-25 17:27:05,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 895 [2022-11-25 17:27:05,097 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:27:05,098 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:27:05,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 17:27:05,099 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:27:05,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:27:05,100 INFO L85 PathProgramCache]: Analyzing trace with hash -569438715, now seen corresponding path program 1 times [2022-11-25 17:27:05,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:27:05,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492516761] [2022-11-25 17:27:05,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:27:05,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:27:05,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:27:06,133 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 475 trivial. 0 not checked. [2022-11-25 17:27:06,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:27:06,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492516761] [2022-11-25 17:27:06,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492516761] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:27:06,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:27:06,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:27:06,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082006265] [2022-11-25 17:27:06,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:27:06,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:27:06,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:27:06,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:27:06,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:27:06,137 INFO L87 Difference]: Start difference. First operand 179882 states and 206231 transitions. Second operand has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 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) [2022-11-25 17:27:16,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:27:16,543 INFO L93 Difference]: Finished difference Result 415871 states and 484360 transitions. [2022-11-25 17:27:16,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:27:16,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 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 894 [2022-11-25 17:27:16,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:27:16,880 INFO L225 Difference]: With dead ends: 415871 [2022-11-25 17:27:16,880 INFO L226 Difference]: Without dead ends: 238721 [2022-11-25 17:27:16,953 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 [2022-11-25 17:27:16,954 INFO L413 NwaCegarLoop]: 3095 mSDtfsCounter, 1482 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 4176 mSolverCounterSat, 1625 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 3270 SdHoareTripleChecker+Invalid, 5801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1625 IncrementalHoareTripleChecker+Valid, 4176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-11-25 17:27:16,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 3270 Invalid, 5801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1625 Valid, 4176 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2022-11-25 17:27:17,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238721 states. [2022-11-25 17:27:19,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238721 to 231778. [2022-11-25 17:27:19,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231778 states, 231777 states have (on average 1.1421021067664177) internal successors, (264713), 231777 states have internal predecessors, (264713), 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) [2022-11-25 17:27:20,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231778 states to 231778 states and 264713 transitions. [2022-11-25 17:27:20,095 INFO L78 Accepts]: Start accepts. Automaton has 231778 states and 264713 transitions. Word has length 894 [2022-11-25 17:27:20,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:27:20,095 INFO L495 AbstractCegarLoop]: Abstraction has 231778 states and 264713 transitions. [2022-11-25 17:27:20,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 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) [2022-11-25 17:27:20,096 INFO L276 IsEmpty]: Start isEmpty. Operand 231778 states and 264713 transitions. [2022-11-25 17:27:20,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 947 [2022-11-25 17:27:20,536 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:27:20,537 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:27:20,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 17:27:20,537 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:27:20,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:27:20,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1588434996, now seen corresponding path program 1 times [2022-11-25 17:27:20,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:27:20,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951029516] [2022-11-25 17:27:20,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:27:20,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:27:20,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:27:21,730 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 341 proven. 0 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-11-25 17:27:21,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:27:21,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951029516] [2022-11-25 17:27:21,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951029516] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:27:21,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:27:21,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:27:21,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8847256] [2022-11-25 17:27:21,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:27:21,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:27:21,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:27:21,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:27:21,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:27:21,735 INFO L87 Difference]: Start difference. First operand 231778 states and 264713 transitions. Second operand has 4 states, 4 states have (on average 145.25) internal successors, (581), 4 states have internal predecessors, (581), 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) [2022-11-25 17:27:39,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:27:39,490 INFO L93 Difference]: Finished difference Result 694266 states and 808295 transitions. [2022-11-25 17:27:39,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:27:39,491 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 145.25) internal successors, (581), 4 states have internal predecessors, (581), 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 946 [2022-11-25 17:27:39,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:27:40,257 INFO L225 Difference]: With dead ends: 694266 [2022-11-25 17:27:40,257 INFO L226 Difference]: Without dead ends: 465220 [2022-11-25 17:27:40,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:27:40,397 INFO L413 NwaCegarLoop]: 753 mSDtfsCounter, 5203 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 5983 mSolverCounterSat, 4378 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5203 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 10361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4378 IncrementalHoareTripleChecker+Valid, 5983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2022-11-25 17:27:40,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5203 Valid, 911 Invalid, 10361 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4378 Valid, 5983 Invalid, 0 Unknown, 0 Unchecked, 14.7s Time] [2022-11-25 17:27:40,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465220 states. [2022-11-25 17:27:46,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465220 to 465199. [2022-11-25 17:27:46,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465199 states, 465198 states have (on average 1.1293900661653749) internal successors, (525390), 465198 states have internal predecessors, (525390), 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) [2022-11-25 17:27:48,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465199 states to 465199 states and 525390 transitions. [2022-11-25 17:27:48,532 INFO L78 Accepts]: Start accepts. Automaton has 465199 states and 525390 transitions. Word has length 946 [2022-11-25 17:27:48,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:27:48,533 INFO L495 AbstractCegarLoop]: Abstraction has 465199 states and 525390 transitions. [2022-11-25 17:27:48,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 145.25) internal successors, (581), 4 states have internal predecessors, (581), 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) [2022-11-25 17:27:48,533 INFO L276 IsEmpty]: Start isEmpty. Operand 465199 states and 525390 transitions. [2022-11-25 17:27:48,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1159 [2022-11-25 17:27:48,571 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:27:48,572 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:27:48,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 17:27:48,573 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:27:48,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:27:48,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1914084469, now seen corresponding path program 1 times [2022-11-25 17:27:48,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:27:48,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862993045] [2022-11-25 17:27:48,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:27:48,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:27:48,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:27:53,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1183 backedges. 809 proven. 218 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2022-11-25 17:27:53,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:27:53,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862993045] [2022-11-25 17:27:53,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862993045] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:27:53,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502756434] [2022-11-25 17:27:53,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:27:53,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:27:53,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b55992-0c36-4842-91fd-ef8ec64db0d6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:27:53,021 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b55992-0c36-4842-91fd-ef8ec64db0d6/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:27:53,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b55992-0c36-4842-91fd-ef8ec64db0d6/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 17:27:53,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:27:53,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 1337 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 17:27:53,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:27:54,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1183 backedges. 952 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-11-25 17:27:54,098 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:27:54,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502756434] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:27:54,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:27:54,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-11-25 17:27:54,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806570137] [2022-11-25 17:27:54,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:27:54,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:27:54,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:27:54,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:27:54,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:27:54,103 INFO L87 Difference]: Start difference. First operand 465199 states and 525390 transitions. Second operand has 3 states, 3 states have (on average 309.6666666666667) internal successors, (929), 3 states have internal predecessors, (929), 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)