./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem12_label45.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff57b1c-d6a0-4892-974a-ab66a4acb3c4/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff57b1c-d6a0-4892-974a-ab66a4acb3c4/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff57b1c-d6a0-4892-974a-ab66a4acb3c4/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff57b1c-d6a0-4892-974a-ab66a4acb3c4/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem12_label45.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff57b1c-d6a0-4892-974a-ab66a4acb3c4/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff57b1c-d6a0-4892-974a-ab66a4acb3c4/bin/uautomizer-TMbwUNV5ro --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 8467039cd3b163d296fd08bc696cd2f7637ba962b4c476281adfe8f379f9ad63 --- 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-8393723 [2022-11-18 20:17:06,854 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:17:06,856 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:17:06,882 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:17:06,882 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:17:06,884 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:17:06,886 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:17:06,888 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:17:06,890 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:17:06,891 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:17:06,893 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:17:06,898 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:17:06,899 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:17:06,900 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:17:06,902 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:17:06,904 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:17:06,905 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:17:06,906 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:17:06,909 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:17:06,920 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:17:06,924 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:17:06,932 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:17:06,933 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:17:06,934 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:17:06,938 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:17:06,939 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:17:06,939 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:17:06,940 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:17:06,941 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:17:06,942 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:17:06,953 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:17:06,956 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:17:06,957 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:17:06,958 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:17:06,960 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:17:06,960 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:17:06,961 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:17:06,961 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:17:06,962 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:17:06,963 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:17:06,968 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:17:06,969 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff57b1c-d6a0-4892-974a-ab66a4acb3c4/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:17:06,997 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:17:06,997 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:17:06,998 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:17:06,998 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:17:06,999 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:17:06,999 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:17:07,000 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:17:07,000 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:17:07,000 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:17:07,000 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:17:07,001 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:17:07,001 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:17:07,001 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:17:07,001 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:17:07,001 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:17:07,002 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:17:07,002 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:17:07,002 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:17:07,002 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:17:07,003 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:17:07,003 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:17:07,003 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:17:07,003 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:17:07,004 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:17:07,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:17:07,004 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:17:07,004 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:17:07,004 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:17:07,005 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:17:07,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:17:07,005 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:17:07,005 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:17:07,005 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:17:07,006 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff57b1c-d6a0-4892-974a-ab66a4acb3c4/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff57b1c-d6a0-4892-974a-ab66a4acb3c4/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8467039cd3b163d296fd08bc696cd2f7637ba962b4c476281adfe8f379f9ad63 [2022-11-18 20:17:07,382 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:17:07,415 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:17:07,418 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:17:07,419 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:17:07,420 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:17:07,422 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff57b1c-d6a0-4892-974a-ab66a4acb3c4/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/eca-rers2012/Problem12_label45.c [2022-11-18 20:17:07,517 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff57b1c-d6a0-4892-974a-ab66a4acb3c4/bin/uautomizer-TMbwUNV5ro/data/5b94da8d3/0c1f42ced16e4021aa7241f6a3be31c1/FLAGfabba75c5 [2022-11-18 20:17:08,462 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:17:08,462 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff57b1c-d6a0-4892-974a-ab66a4acb3c4/sv-benchmarks/c/eca-rers2012/Problem12_label45.c [2022-11-18 20:17:08,495 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff57b1c-d6a0-4892-974a-ab66a4acb3c4/bin/uautomizer-TMbwUNV5ro/data/5b94da8d3/0c1f42ced16e4021aa7241f6a3be31c1/FLAGfabba75c5 [2022-11-18 20:17:08,887 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff57b1c-d6a0-4892-974a-ab66a4acb3c4/bin/uautomizer-TMbwUNV5ro/data/5b94da8d3/0c1f42ced16e4021aa7241f6a3be31c1 [2022-11-18 20:17:08,890 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:17:08,893 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:17:08,894 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:17:08,895 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:17:08,899 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:17:08,900 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:17:08" (1/1) ... [2022-11-18 20:17:08,901 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@373579f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:08, skipping insertion in model container [2022-11-18 20:17:08,901 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:17:08" (1/1) ... [2022-11-18 20:17:08,911 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:17:09,063 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:17:09,468 WARN L234 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_5ff57b1c-d6a0-4892-974a-ab66a4acb3c4/sv-benchmarks/c/eca-rers2012/Problem12_label45.c[6354,6367] [2022-11-18 20:17:10,683 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:17:10,696 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:17:10,746 WARN L234 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_5ff57b1c-d6a0-4892-974a-ab66a4acb3c4/sv-benchmarks/c/eca-rers2012/Problem12_label45.c[6354,6367] [2022-11-18 20:17:11,515 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:17:11,540 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:17:11,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:11 WrapperNode [2022-11-18 20:17:11,541 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:17:11,542 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:17:11,543 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:17:11,543 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:17:11,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:11" (1/1) ... [2022-11-18 20:17:11,632 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:11" (1/1) ... [2022-11-18 20:17:11,986 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4757 [2022-11-18 20:17:11,986 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:17:11,987 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:17:11,987 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:17:11,987 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:17:11,996 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:11" (1/1) ... [2022-11-18 20:17:11,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:11" (1/1) ... [2022-11-18 20:17:12,049 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:11" (1/1) ... [2022-11-18 20:17:12,049 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:11" (1/1) ... [2022-11-18 20:17:12,351 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:11" (1/1) ... [2022-11-18 20:17:12,453 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:11" (1/1) ... [2022-11-18 20:17:12,536 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:11" (1/1) ... [2022-11-18 20:17:12,554 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:11" (1/1) ... [2022-11-18 20:17:12,734 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:17:12,737 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:17:12,738 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:17:12,738 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:17:12,740 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:11" (1/1) ... [2022-11-18 20:17:12,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:17:12,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff57b1c-d6a0-4892-974a-ab66a4acb3c4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:17:12,825 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff57b1c-d6a0-4892-974a-ab66a4acb3c4/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:17:12,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff57b1c-d6a0-4892-974a-ab66a4acb3c4/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:17:13,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:17:13,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:17:13,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:17:13,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:17:13,177 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:17:13,180 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:17:19,283 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:17:19,308 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:17:19,309 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 20:17:19,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:17:19 BoogieIcfgContainer [2022-11-18 20:17:19,314 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:17:19,319 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:17:19,320 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:17:19,324 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:17:19,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:17:08" (1/3) ... [2022-11-18 20:17:19,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a48ddf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:17:19, skipping insertion in model container [2022-11-18 20:17:19,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:11" (2/3) ... [2022-11-18 20:17:19,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a48ddf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:17:19, skipping insertion in model container [2022-11-18 20:17:19,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:17:19" (3/3) ... [2022-11-18 20:17:19,329 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label45.c [2022-11-18 20:17:19,354 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:17:19,355 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:17:19,484 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:17:19,497 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;@1dda531b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:17:19,497 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 20:17:19,509 INFO L276 IsEmpty]: Start isEmpty. Operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 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) [2022-11-18 20:17:19,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-18 20:17:19,523 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:17:19,524 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:17:19,525 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:17:19,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:17:19,534 INFO L85 PathProgramCache]: Analyzing trace with hash 2122806209, now seen corresponding path program 1 times [2022-11-18 20:17:19,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:17:19,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855853778] [2022-11-18 20:17:19,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:17:19,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:17:19,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:20,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:17:20,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:17:20,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855853778] [2022-11-18 20:17:20,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855853778] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:17:20,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:17:20,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:17:20,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380377353] [2022-11-18 20:17:20,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:17:20,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:17:20,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:17:20,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:17:20,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:17:20,207 INFO L87 Difference]: Start difference. First operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 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 17.0) internal successors, (51), 2 states have internal predecessors, (51), 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) [2022-11-18 20:17:25,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:17:25,573 INFO L93 Difference]: Finished difference Result 2388 states and 4629 transitions. [2022-11-18 20:17:25,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:17:25,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 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 51 [2022-11-18 20:17:25,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:17:25,601 INFO L225 Difference]: With dead ends: 2388 [2022-11-18 20:17:25,601 INFO L226 Difference]: Without dead ends: 1506 [2022-11-18 20:17:25,608 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 [2022-11-18 20:17:25,612 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 783 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2334 mSolverCounterSat, 651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 2985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 2334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:17:25,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [783 Valid, 481 Invalid, 2985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [651 Valid, 2334 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-18 20:17:25,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2022-11-18 20:17:25,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1506. [2022-11-18 20:17:25,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 1.6385382059800664) internal successors, (2466), 1505 states have internal predecessors, (2466), 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) [2022-11-18 20:17:25,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2466 transitions. [2022-11-18 20:17:25,744 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2466 transitions. Word has length 51 [2022-11-18 20:17:25,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:17:25,745 INFO L495 AbstractCegarLoop]: Abstraction has 1506 states and 2466 transitions. [2022-11-18 20:17:25,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 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) [2022-11-18 20:17:25,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2466 transitions. [2022-11-18 20:17:25,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-18 20:17:25,749 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:17:25,750 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-18 20:17:25,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:17:25,751 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:17:25,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:17:25,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1988888109, now seen corresponding path program 1 times [2022-11-18 20:17:25,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:17:25,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598055133] [2022-11-18 20:17:25,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:17:25,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:17:25,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:26,308 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:17:26,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:17:26,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598055133] [2022-11-18 20:17:26,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598055133] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:17:26,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:17:26,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:17:26,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45486142] [2022-11-18 20:17:26,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:17:26,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:17:26,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:17:26,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:17:26,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:17:26,313 INFO L87 Difference]: Start difference. First operand 1506 states and 2466 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 3 states have internal predecessors, (122), 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) [2022-11-18 20:17:33,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:17:33,342 INFO L93 Difference]: Finished difference Result 4549 states and 7430 transitions. [2022-11-18 20:17:33,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:17:33,343 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 3 states have internal predecessors, (122), 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 122 [2022-11-18 20:17:33,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:17:33,357 INFO L225 Difference]: With dead ends: 4549 [2022-11-18 20:17:33,357 INFO L226 Difference]: Without dead ends: 3008 [2022-11-18 20:17:33,361 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 [2022-11-18 20:17:33,362 INFO L413 NwaCegarLoop]: 638 mSDtfsCounter, 690 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 3732 mSolverCounterSat, 664 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 4396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 3732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:17:33,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [690 Valid, 656 Invalid, 4396 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [664 Valid, 3732 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-11-18 20:17:33,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2022-11-18 20:17:33,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 3008. [2022-11-18 20:17:33,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3008 states, 3007 states have (on average 1.341536415031593) internal successors, (4034), 3007 states have internal predecessors, (4034), 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) [2022-11-18 20:17:33,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 4034 transitions. [2022-11-18 20:17:33,464 INFO L78 Accepts]: Start accepts. Automaton has 3008 states and 4034 transitions. Word has length 122 [2022-11-18 20:17:33,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:17:33,469 INFO L495 AbstractCegarLoop]: Abstraction has 3008 states and 4034 transitions. [2022-11-18 20:17:33,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 3 states have internal predecessors, (122), 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) [2022-11-18 20:17:33,470 INFO L276 IsEmpty]: Start isEmpty. Operand 3008 states and 4034 transitions. [2022-11-18 20:17:33,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-18 20:17:33,484 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:17:33,485 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-18 20:17:33,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:17:33,486 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:17:33,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:17:33,486 INFO L85 PathProgramCache]: Analyzing trace with hash 742612050, now seen corresponding path program 1 times [2022-11-18 20:17:33,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:17:33,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425005401] [2022-11-18 20:17:33,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:17:33,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:17:33,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:34,146 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:17:34,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:17:34,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425005401] [2022-11-18 20:17:34,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425005401] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:17:34,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:17:34,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:17:34,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490967796] [2022-11-18 20:17:34,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:17:34,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:17:34,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:17:34,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:17:34,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:17:34,150 INFO L87 Difference]: Start difference. First operand 3008 states and 4034 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 3 states have internal predecessors, (160), 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) [2022-11-18 20:17:40,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:17:40,847 INFO L93 Difference]: Finished difference Result 9769 states and 12892 transitions. [2022-11-18 20:17:40,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:17:40,848 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 3 states have internal predecessors, (160), 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 160 [2022-11-18 20:17:40,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:17:40,875 INFO L225 Difference]: With dead ends: 9769 [2022-11-18 20:17:40,875 INFO L226 Difference]: Without dead ends: 6763 [2022-11-18 20:17:40,880 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 [2022-11-18 20:17:40,881 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 2094 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 4274 mSolverCounterSat, 567 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2094 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 4841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 567 IncrementalHoareTripleChecker+Valid, 4274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:17:40,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2094 Valid, 451 Invalid, 4841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [567 Valid, 4274 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-11-18 20:17:40,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6763 states. [2022-11-18 20:17:41,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6763 to 6763. [2022-11-18 20:17:41,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6763 states, 6762 states have (on average 1.287488908606921) internal successors, (8706), 6762 states have internal predecessors, (8706), 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) [2022-11-18 20:17:41,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6763 states to 6763 states and 8706 transitions. [2022-11-18 20:17:41,043 INFO L78 Accepts]: Start accepts. Automaton has 6763 states and 8706 transitions. Word has length 160 [2022-11-18 20:17:41,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:17:41,044 INFO L495 AbstractCegarLoop]: Abstraction has 6763 states and 8706 transitions. [2022-11-18 20:17:41,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 3 states have internal predecessors, (160), 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) [2022-11-18 20:17:41,045 INFO L276 IsEmpty]: Start isEmpty. Operand 6763 states and 8706 transitions. [2022-11-18 20:17:41,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2022-11-18 20:17:41,050 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:17:41,051 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:17:41,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:17:41,051 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:17:41,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:17:41,052 INFO L85 PathProgramCache]: Analyzing trace with hash -280783918, now seen corresponding path program 1 times [2022-11-18 20:17:41,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:17:41,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049279501] [2022-11-18 20:17:41,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:17:41,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:17:41,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:41,669 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-18 20:17:41,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:17:41,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049279501] [2022-11-18 20:17:41,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049279501] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:17:41,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:17:41,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:17:41,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950252482] [2022-11-18 20:17:41,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:17:41,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:17:41,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:17:41,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:17:41,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:17:41,676 INFO L87 Difference]: Start difference. First operand 6763 states and 8706 transitions. Second operand has 4 states, 4 states have (on average 48.5) internal successors, (194), 3 states have internal predecessors, (194), 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) [2022-11-18 20:17:47,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:17:47,577 INFO L93 Difference]: Finished difference Result 15816 states and 21396 transitions. [2022-11-18 20:17:47,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:17:47,579 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 3 states have internal predecessors, (194), 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 263 [2022-11-18 20:17:47,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:17:47,617 INFO L225 Difference]: With dead ends: 15816 [2022-11-18 20:17:47,617 INFO L226 Difference]: Without dead ends: 9769 [2022-11-18 20:17:47,626 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 [2022-11-18 20:17:47,628 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 776 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 3910 mSolverCounterSat, 542 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 4452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 542 IncrementalHoareTripleChecker+Valid, 3910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:17:47,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 495 Invalid, 4452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [542 Valid, 3910 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-11-18 20:17:47,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9769 states. [2022-11-18 20:17:47,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9769 to 9767. [2022-11-18 20:17:47,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9767 states, 9766 states have (on average 1.273192709399959) internal successors, (12434), 9766 states have internal predecessors, (12434), 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) [2022-11-18 20:17:47,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9767 states to 9767 states and 12434 transitions. [2022-11-18 20:17:47,968 INFO L78 Accepts]: Start accepts. Automaton has 9767 states and 12434 transitions. Word has length 263 [2022-11-18 20:17:47,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:17:47,968 INFO L495 AbstractCegarLoop]: Abstraction has 9767 states and 12434 transitions. [2022-11-18 20:17:47,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 3 states have internal predecessors, (194), 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) [2022-11-18 20:17:47,969 INFO L276 IsEmpty]: Start isEmpty. Operand 9767 states and 12434 transitions. [2022-11-18 20:17:47,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-11-18 20:17:47,974 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:17:47,974 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:17:47,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:17:47,974 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:17:47,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:17:47,976 INFO L85 PathProgramCache]: Analyzing trace with hash 120245758, now seen corresponding path program 1 times [2022-11-18 20:17:47,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:17:47,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102299254] [2022-11-18 20:17:47,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:17:47,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:17:48,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:48,274 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-11-18 20:17:48,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:17:48,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102299254] [2022-11-18 20:17:48,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102299254] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:17:48,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:17:48,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:17:48,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634378386] [2022-11-18 20:17:48,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:17:48,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:17:48,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:17:48,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:17:48,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:17:48,280 INFO L87 Difference]: Start difference. First operand 9767 states and 12434 transitions. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 2 states have internal predecessors, (194), 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) [2022-11-18 20:17:52,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:17:52,769 INFO L93 Difference]: Finished difference Result 26291 states and 34157 transitions. [2022-11-18 20:17:52,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:17:52,775 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 2 states have internal predecessors, (194), 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 266 [2022-11-18 20:17:52,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:17:52,826 INFO L225 Difference]: With dead ends: 26291 [2022-11-18 20:17:52,827 INFO L226 Difference]: Without dead ends: 17277 [2022-11-18 20:17:52,835 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 [2022-11-18 20:17:52,837 INFO L413 NwaCegarLoop]: 592 mSDtfsCounter, 619 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2021 mSolverCounterSat, 794 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 2815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 794 IncrementalHoareTripleChecker+Valid, 2021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:17:52,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [619 Valid, 598 Invalid, 2815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [794 Valid, 2021 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-18 20:17:52,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17277 states. [2022-11-18 20:17:53,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17277 to 16526. [2022-11-18 20:17:53,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16526 states, 16525 states have (on average 1.2063540090771558) internal successors, (19935), 16525 states have internal predecessors, (19935), 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) [2022-11-18 20:17:53,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16526 states to 16526 states and 19935 transitions. [2022-11-18 20:17:53,267 INFO L78 Accepts]: Start accepts. Automaton has 16526 states and 19935 transitions. Word has length 266 [2022-11-18 20:17:53,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:17:53,269 INFO L495 AbstractCegarLoop]: Abstraction has 16526 states and 19935 transitions. [2022-11-18 20:17:53,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 2 states have internal predecessors, (194), 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) [2022-11-18 20:17:53,275 INFO L276 IsEmpty]: Start isEmpty. Operand 16526 states and 19935 transitions. [2022-11-18 20:17:53,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2022-11-18 20:17:53,285 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:17:53,285 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:17:53,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:17:53,288 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:17:53,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:17:53,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1189419317, now seen corresponding path program 1 times [2022-11-18 20:17:53,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:17:53,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868446293] [2022-11-18 20:17:53,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:17:53,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:17:53,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:53,633 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-18 20:17:53,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:17:53,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868446293] [2022-11-18 20:17:53,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868446293] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:17:53,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:17:53,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:17:53,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107468313] [2022-11-18 20:17:53,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:17:53,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:17:53,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:17:53,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:17:53,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:17:53,637 INFO L87 Difference]: Start difference. First operand 16526 states and 19935 transitions. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 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) [2022-11-18 20:17:58,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:17:58,012 INFO L93 Difference]: Finished difference Result 32299 states and 39112 transitions. [2022-11-18 20:17:58,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:17:58,013 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 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 281 [2022-11-18 20:17:58,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:17:58,047 INFO L225 Difference]: With dead ends: 32299 [2022-11-18 20:17:58,047 INFO L226 Difference]: Without dead ends: 16526 [2022-11-18 20:17:58,059 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 [2022-11-18 20:17:58,061 INFO L413 NwaCegarLoop]: 1233 mSDtfsCounter, 696 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2429 mSolverCounterSat, 484 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 484 IncrementalHoareTripleChecker+Valid, 2429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:17:58,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [696 Valid, 1241 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [484 Valid, 2429 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-18 20:17:58,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16526 states. [2022-11-18 20:17:58,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16526 to 15775. [2022-11-18 20:17:58,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15775 states, 15774 states have (on average 1.1770635222518067) internal successors, (18567), 15774 states have internal predecessors, (18567), 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) [2022-11-18 20:17:58,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15775 states to 15775 states and 18567 transitions. [2022-11-18 20:17:58,305 INFO L78 Accepts]: Start accepts. Automaton has 15775 states and 18567 transitions. Word has length 281 [2022-11-18 20:17:58,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:17:58,307 INFO L495 AbstractCegarLoop]: Abstraction has 15775 states and 18567 transitions. [2022-11-18 20:17:58,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 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) [2022-11-18 20:17:58,307 INFO L276 IsEmpty]: Start isEmpty. Operand 15775 states and 18567 transitions. [2022-11-18 20:17:58,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2022-11-18 20:17:58,312 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:17:58,313 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:17:58,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:17:58,313 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:17:58,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:17:58,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1133778842, now seen corresponding path program 1 times [2022-11-18 20:17:58,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:17:58,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779853332] [2022-11-18 20:17:58,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:17:58,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:17:58,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:58,611 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-11-18 20:17:58,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:17:58,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779853332] [2022-11-18 20:17:58,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779853332] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:17:58,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:17:58,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:17:58,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685168881] [2022-11-18 20:17:58,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:17:58,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:17:58,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:17:58,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:17:58,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:17:58,615 INFO L87 Difference]: Start difference. First operand 15775 states and 18567 transitions. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 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) [2022-11-18 20:18:03,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:18:03,382 INFO L93 Difference]: Finished difference Result 39058 states and 46231 transitions. [2022-11-18 20:18:03,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:18:03,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 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 282 [2022-11-18 20:18:03,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:18:03,431 INFO L225 Difference]: With dead ends: 39058 [2022-11-18 20:18:03,432 INFO L226 Difference]: Without dead ends: 24036 [2022-11-18 20:18:03,444 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 [2022-11-18 20:18:03,445 INFO L413 NwaCegarLoop]: 1356 mSDtfsCounter, 710 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2707 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 1364 SdHoareTripleChecker+Invalid, 3010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 2707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:18:03,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [710 Valid, 1364 Invalid, 3010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 2707 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-18 20:18:03,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24036 states. [2022-11-18 20:18:03,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24036 to 22534. [2022-11-18 20:18:03,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22534 states, 22533 states have (on average 1.1770292459947633) internal successors, (26522), 22533 states have internal predecessors, (26522), 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) [2022-11-18 20:18:03,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22534 states to 22534 states and 26522 transitions. [2022-11-18 20:18:03,758 INFO L78 Accepts]: Start accepts. Automaton has 22534 states and 26522 transitions. Word has length 282 [2022-11-18 20:18:03,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:18:03,759 INFO L495 AbstractCegarLoop]: Abstraction has 22534 states and 26522 transitions. [2022-11-18 20:18:03,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 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) [2022-11-18 20:18:03,759 INFO L276 IsEmpty]: Start isEmpty. Operand 22534 states and 26522 transitions. [2022-11-18 20:18:03,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2022-11-18 20:18:03,766 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:18:03,766 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-18 20:18:03,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:18:03,767 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:18:03,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:03,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1785263591, now seen corresponding path program 1 times [2022-11-18 20:18:03,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:03,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165601527] [2022-11-18 20:18:03,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:03,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:03,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:04,513 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-11-18 20:18:04,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:04,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165601527] [2022-11-18 20:18:04,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165601527] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:18:04,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:18:04,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:18:04,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133540913] [2022-11-18 20:18:04,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:18:04,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:18:04,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:04,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:18:04,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:18:04,516 INFO L87 Difference]: Start difference. First operand 22534 states and 26522 transitions. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 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) [2022-11-18 20:18:08,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:18:08,315 INFO L93 Difference]: Finished difference Result 52576 states and 61367 transitions. [2022-11-18 20:18:08,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:18:08,315 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 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 328 [2022-11-18 20:18:08,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:18:08,376 INFO L225 Difference]: With dead ends: 52576 [2022-11-18 20:18:08,376 INFO L226 Difference]: Without dead ends: 30795 [2022-11-18 20:18:08,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:18:08,397 INFO L413 NwaCegarLoop]: 892 mSDtfsCounter, 817 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2129 mSolverCounterSat, 584 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 2713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 584 IncrementalHoareTripleChecker+Valid, 2129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:18:08,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [817 Valid, 900 Invalid, 2713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [584 Valid, 2129 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-18 20:18:08,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30795 states. [2022-11-18 20:18:08,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30795 to 28542. [2022-11-18 20:18:08,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28542 states, 28541 states have (on average 1.1348936617497636) internal successors, (32391), 28541 states have internal predecessors, (32391), 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) [2022-11-18 20:18:08,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28542 states to 28542 states and 32391 transitions. [2022-11-18 20:18:08,844 INFO L78 Accepts]: Start accepts. Automaton has 28542 states and 32391 transitions. Word has length 328 [2022-11-18 20:18:08,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:18:08,845 INFO L495 AbstractCegarLoop]: Abstraction has 28542 states and 32391 transitions. [2022-11-18 20:18:08,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 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) [2022-11-18 20:18:08,845 INFO L276 IsEmpty]: Start isEmpty. Operand 28542 states and 32391 transitions. [2022-11-18 20:18:08,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2022-11-18 20:18:08,873 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:18:08,874 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:18:08,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:18:08,874 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:18:08,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:08,875 INFO L85 PathProgramCache]: Analyzing trace with hash -202015512, now seen corresponding path program 1 times [2022-11-18 20:18:08,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:08,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909935161] [2022-11-18 20:18:08,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:08,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:09,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:09,607 INFO L134 CoverageAnalysis]: Checked inductivity of 834 backedges. 707 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-11-18 20:18:09,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:09,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909935161] [2022-11-18 20:18:09,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909935161] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:18:09,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:18:09,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:18:09,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401940558] [2022-11-18 20:18:09,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:18:09,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:18:09,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:09,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:18:09,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:18:09,613 INFO L87 Difference]: Start difference. First operand 28542 states and 32391 transitions. Second operand has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 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) [2022-11-18 20:18:13,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:18:13,605 INFO L93 Difference]: Finished difference Result 57833 states and 65537 transitions. [2022-11-18 20:18:13,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:18:13,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 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 551 [2022-11-18 20:18:13,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:18:13,653 INFO L225 Difference]: With dead ends: 57833 [2022-11-18 20:18:13,654 INFO L226 Difference]: Without dead ends: 30044 [2022-11-18 20:18:13,670 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 [2022-11-18 20:18:13,671 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 661 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2258 mSolverCounterSat, 718 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 2976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 718 IncrementalHoareTripleChecker+Valid, 2258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:18:13,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [661 Valid, 135 Invalid, 2976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [718 Valid, 2258 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-18 20:18:13,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30044 states. [2022-11-18 20:18:14,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30044 to 28542. [2022-11-18 20:18:14,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28542 states, 28541 states have (on average 1.1300585123156162) internal successors, (32253), 28541 states have internal predecessors, (32253), 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) [2022-11-18 20:18:14,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28542 states to 28542 states and 32253 transitions. [2022-11-18 20:18:14,207 INFO L78 Accepts]: Start accepts. Automaton has 28542 states and 32253 transitions. Word has length 551 [2022-11-18 20:18:14,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:18:14,207 INFO L495 AbstractCegarLoop]: Abstraction has 28542 states and 32253 transitions. [2022-11-18 20:18:14,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 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) [2022-11-18 20:18:14,208 INFO L276 IsEmpty]: Start isEmpty. Operand 28542 states and 32253 transitions. [2022-11-18 20:18:14,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 560 [2022-11-18 20:18:14,224 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:18:14,224 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-18 20:18:14,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:18:14,225 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:18:14,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:14,230 INFO L85 PathProgramCache]: Analyzing trace with hash -515885921, now seen corresponding path program 1 times [2022-11-18 20:18:14,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:14,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91482500] [2022-11-18 20:18:14,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:14,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:14,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:14,888 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 394 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-18 20:18:14,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:14,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91482500] [2022-11-18 20:18:14,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91482500] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:18:14,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:18:14,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:18:14,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613857621] [2022-11-18 20:18:14,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:18:14,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:18:14,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:14,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:18:14,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:18:14,892 INFO L87 Difference]: Start difference. First operand 28542 states and 32253 transitions. Second operand has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 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) [2022-11-18 20:18:19,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:18:19,363 INFO L93 Difference]: Finished difference Result 78110 states and 88953 transitions. [2022-11-18 20:18:19,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:18:19,363 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 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 559 [2022-11-18 20:18:19,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:18:19,434 INFO L225 Difference]: With dead ends: 78110 [2022-11-18 20:18:19,434 INFO L226 Difference]: Without dead ends: 50321 [2022-11-18 20:18:19,451 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 [2022-11-18 20:18:19,452 INFO L413 NwaCegarLoop]: 569 mSDtfsCounter, 712 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2329 mSolverCounterSat, 568 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 2897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 568 IncrementalHoareTripleChecker+Valid, 2329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:18:19,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [712 Valid, 576 Invalid, 2897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [568 Valid, 2329 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-18 20:18:19,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50321 states. [2022-11-18 20:18:19,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50321 to 47317. [2022-11-18 20:18:20,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47317 states, 47316 states have (on average 1.1232141347535718) internal successors, (53146), 47316 states have internal predecessors, (53146), 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) [2022-11-18 20:18:20,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47317 states to 47317 states and 53146 transitions. [2022-11-18 20:18:20,084 INFO L78 Accepts]: Start accepts. Automaton has 47317 states and 53146 transitions. Word has length 559 [2022-11-18 20:18:20,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:18:20,084 INFO L495 AbstractCegarLoop]: Abstraction has 47317 states and 53146 transitions. [2022-11-18 20:18:20,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 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) [2022-11-18 20:18:20,085 INFO L276 IsEmpty]: Start isEmpty. Operand 47317 states and 53146 transitions. [2022-11-18 20:18:20,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2022-11-18 20:18:20,109 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:18:20,110 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-18 20:18:20,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:18:20,110 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:18:20,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:20,111 INFO L85 PathProgramCache]: Analyzing trace with hash -446642940, now seen corresponding path program 1 times [2022-11-18 20:18:20,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:20,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246410283] [2022-11-18 20:18:20,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:20,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:20,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:21,325 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 187 proven. 229 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-18 20:18:21,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:21,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246410283] [2022-11-18 20:18:21,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246410283] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:18:21,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775073047] [2022-11-18 20:18:21,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:21,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:18:21,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff57b1c-d6a0-4892-974a-ab66a4acb3c4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:18:21,335 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff57b1c-d6a0-4892-974a-ab66a4acb3c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:18:21,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff57b1c-d6a0-4892-974a-ab66a4acb3c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:18:21,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:21,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 717 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:18:21,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:18:22,348 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 375 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-18 20:18:22,349 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:18:22,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775073047] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:18:22,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:18:22,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-18 20:18:22,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493439596] [2022-11-18 20:18:22,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:18:22,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:18:22,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:22,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:18:22,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:18:22,353 INFO L87 Difference]: Start difference. First operand 47317 states and 53146 transitions. Second operand has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 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) [2022-11-18 20:18:26,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:18:26,909 INFO L93 Difference]: Finished difference Result 123170 states and 139501 transitions. [2022-11-18 20:18:26,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:18:26,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 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 569 [2022-11-18 20:18:26,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:18:27,019 INFO L225 Difference]: With dead ends: 123170 [2022-11-18 20:18:27,019 INFO L226 Difference]: Without dead ends: 76606 [2022-11-18 20:18:27,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 572 GetRequests, 568 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:18:27,054 INFO L413 NwaCegarLoop]: 860 mSDtfsCounter, 540 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2254 mSolverCounterSat, 776 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 3030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 776 IncrementalHoareTripleChecker+Valid, 2254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:18:27,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [540 Valid, 867 Invalid, 3030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [776 Valid, 2254 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-18 20:18:27,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76606 states. [2022-11-18 20:18:27,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76606 to 76606. [2022-11-18 20:18:28,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76606 states, 76605 states have (on average 1.1288688727889824) internal successors, (86477), 76605 states have internal predecessors, (86477), 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) [2022-11-18 20:18:28,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76606 states to 76606 states and 86477 transitions. [2022-11-18 20:18:28,168 INFO L78 Accepts]: Start accepts. Automaton has 76606 states and 86477 transitions. Word has length 569 [2022-11-18 20:18:28,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:18:28,168 INFO L495 AbstractCegarLoop]: Abstraction has 76606 states and 86477 transitions. [2022-11-18 20:18:28,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 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) [2022-11-18 20:18:28,169 INFO L276 IsEmpty]: Start isEmpty. Operand 76606 states and 86477 transitions. [2022-11-18 20:18:28,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 691 [2022-11-18 20:18:28,191 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:18:28,192 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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] [2022-11-18 20:18:28,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff57b1c-d6a0-4892-974a-ab66a4acb3c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:18:28,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff57b1c-d6a0-4892-974a-ab66a4acb3c4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-18 20:18:28,394 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:18:28,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:28,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1531364508, now seen corresponding path program 1 times [2022-11-18 20:18:28,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:28,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903894445] [2022-11-18 20:18:28,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:28,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:28,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:29,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 990 proven. 0 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2022-11-18 20:18:29,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:29,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903894445] [2022-11-18 20:18:29,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903894445] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:18:29,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:18:29,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:18:29,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076209616] [2022-11-18 20:18:29,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:18:29,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:18:29,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:29,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:18:29,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:18:29,367 INFO L87 Difference]: Start difference. First operand 76606 states and 86477 transitions. Second operand has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 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) [2022-11-18 20:18:33,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:18:33,530 INFO L93 Difference]: Finished difference Result 182499 states and 207826 transitions. [2022-11-18 20:18:33,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:18:33,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 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 690 [2022-11-18 20:18:33,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:18:33,857 INFO L225 Difference]: With dead ends: 182499 [2022-11-18 20:18:33,870 INFO L226 Difference]: Without dead ends: 106646 [2022-11-18 20:18:33,928 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 [2022-11-18 20:18:33,930 INFO L413 NwaCegarLoop]: 1218 mSDtfsCounter, 611 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2257 mSolverCounterSat, 389 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 1226 SdHoareTripleChecker+Invalid, 2646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 389 IncrementalHoareTripleChecker+Valid, 2257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:18:33,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [611 Valid, 1226 Invalid, 2646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [389 Valid, 2257 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-18 20:18:34,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106646 states. [2022-11-18 20:18:35,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106646 to 103642. [2022-11-18 20:18:35,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103642 states, 103641 states have (on average 1.112146737295086) internal successors, (115264), 103641 states have internal predecessors, (115264), 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) [2022-11-18 20:18:35,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103642 states to 103642 states and 115264 transitions. [2022-11-18 20:18:35,533 INFO L78 Accepts]: Start accepts. Automaton has 103642 states and 115264 transitions. Word has length 690 [2022-11-18 20:18:35,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:18:35,534 INFO L495 AbstractCegarLoop]: Abstraction has 103642 states and 115264 transitions. [2022-11-18 20:18:35,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 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) [2022-11-18 20:18:35,535 INFO L276 IsEmpty]: Start isEmpty. Operand 103642 states and 115264 transitions. [2022-11-18 20:18:35,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 692 [2022-11-18 20:18:35,595 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:18:35,597 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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] [2022-11-18 20:18:35,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 20:18:35,598 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:18:35,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:35,598 INFO L85 PathProgramCache]: Analyzing trace with hash -2072014364, now seen corresponding path program 1 times [2022-11-18 20:18:35,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:35,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903111050] [2022-11-18 20:18:35,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:35,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:35,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:37,167 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 546 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2022-11-18 20:18:37,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:37,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903111050] [2022-11-18 20:18:37,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903111050] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:18:37,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:18:37,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:18:37,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745063695] [2022-11-18 20:18:37,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:18:37,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:18:37,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:37,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:18:37,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:18:37,171 INFO L87 Difference]: Start difference. First operand 103642 states and 115264 transitions. Second operand has 3 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 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) [2022-11-18 20:18:41,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:18:41,262 INFO L93 Difference]: Finished difference Result 206531 states and 229770 transitions. [2022-11-18 20:18:41,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:18:41,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 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 691 [2022-11-18 20:18:41,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:18:41,387 INFO L225 Difference]: With dead ends: 206531 [2022-11-18 20:18:41,387 INFO L226 Difference]: Without dead ends: 103642 [2022-11-18 20:18:41,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:18:41,416 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 602 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2022 mSolverCounterSat, 599 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 2621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 599 IncrementalHoareTripleChecker+Valid, 2022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:18:41,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [602 Valid, 211 Invalid, 2621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [599 Valid, 2022 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-18 20:18:41,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103642 states. [2022-11-18 20:18:42,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103642 to 102891. [2022-11-18 20:18:42,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102891 states, 102890 states have (on average 1.094644766255224) internal successors, (112628), 102890 states have internal predecessors, (112628), 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) [2022-11-18 20:18:42,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102891 states to 102891 states and 112628 transitions. [2022-11-18 20:18:42,954 INFO L78 Accepts]: Start accepts. Automaton has 102891 states and 112628 transitions. Word has length 691 [2022-11-18 20:18:42,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:18:42,955 INFO L495 AbstractCegarLoop]: Abstraction has 102891 states and 112628 transitions. [2022-11-18 20:18:42,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 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) [2022-11-18 20:18:42,955 INFO L276 IsEmpty]: Start isEmpty. Operand 102891 states and 112628 transitions. [2022-11-18 20:18:42,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 695 [2022-11-18 20:18:42,986 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:18:42,987 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-18 20:18:42,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 20:18:42,987 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:18:42,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:42,988 INFO L85 PathProgramCache]: Analyzing trace with hash -263910530, now seen corresponding path program 1 times [2022-11-18 20:18:42,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:42,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342907105] [2022-11-18 20:18:42,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:42,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:43,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:43,497 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 597 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2022-11-18 20:18:43,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:43,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342907105] [2022-11-18 20:18:43,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342907105] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:18:43,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:18:43,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:18:43,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46126008] [2022-11-18 20:18:43,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:18:43,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:18:43,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:43,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:18:43,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:18:43,502 INFO L87 Difference]: Start difference. First operand 102891 states and 112628 transitions. Second operand has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 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) [2022-11-18 20:18:48,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:18:48,642 INFO L93 Difference]: Finished difference Result 226808 states and 248581 transitions. [2022-11-18 20:18:48,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:18:48,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 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 694 [2022-11-18 20:18:48,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:18:48,771 INFO L225 Difference]: With dead ends: 226808 [2022-11-18 20:18:48,772 INFO L226 Difference]: Without dead ends: 124670 [2022-11-18 20:18:48,805 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 [2022-11-18 20:18:48,806 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 717 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 643 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 2904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 643 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:18:48,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [717 Valid, 482 Invalid, 2904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [643 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-18 20:18:48,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124670 states. [2022-11-18 20:18:50,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124670 to 102891. [2022-11-18 20:18:50,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102891 states, 102890 states have (on average 1.094644766255224) internal successors, (112628), 102890 states have internal predecessors, (112628), 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) [2022-11-18 20:18:50,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102891 states to 102891 states and 112628 transitions. [2022-11-18 20:18:50,311 INFO L78 Accepts]: Start accepts. Automaton has 102891 states and 112628 transitions. Word has length 694 [2022-11-18 20:18:50,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:18:50,311 INFO L495 AbstractCegarLoop]: Abstraction has 102891 states and 112628 transitions. [2022-11-18 20:18:50,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 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) [2022-11-18 20:18:50,312 INFO L276 IsEmpty]: Start isEmpty. Operand 102891 states and 112628 transitions. [2022-11-18 20:18:50,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 722 [2022-11-18 20:18:50,346 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:18:50,347 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-18 20:18:50,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 20:18:50,347 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:18:50,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:50,348 INFO L85 PathProgramCache]: Analyzing trace with hash -794148503, now seen corresponding path program 1 times [2022-11-18 20:18:50,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:50,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360499017] [2022-11-18 20:18:50,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:50,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:50,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:51,384 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 526 proven. 0 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2022-11-18 20:18:51,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:51,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360499017] [2022-11-18 20:18:51,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360499017] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:18:51,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:18:51,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:18:51,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106058668] [2022-11-18 20:18:51,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:18:51,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:18:51,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:51,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:18:51,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:18:51,388 INFO L87 Difference]: Start difference. First operand 102891 states and 112628 transitions. Second operand has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 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) [2022-11-18 20:18:56,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:18:56,309 INFO L93 Difference]: Finished difference Result 246334 states and 270772 transitions. [2022-11-18 20:18:56,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:18:56,310 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 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 721 [2022-11-18 20:18:56,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:18:56,454 INFO L225 Difference]: With dead ends: 246334 [2022-11-18 20:18:56,454 INFO L226 Difference]: Without dead ends: 138939 [2022-11-18 20:18:56,499 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 [2022-11-18 20:18:56,500 INFO L413 NwaCegarLoop]: 1297 mSDtfsCounter, 448 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2214 mSolverCounterSat, 611 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 1305 SdHoareTripleChecker+Invalid, 2825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 611 IncrementalHoareTripleChecker+Valid, 2214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:18:56,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 1305 Invalid, 2825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [611 Valid, 2214 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-18 20:18:57,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138939 states. [2022-11-18 20:18:58,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138939 to 121666. [2022-11-18 20:18:58,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121666 states, 121665 states have (on average 1.0806641186865573) internal successors, (131479), 121665 states have internal predecessors, (131479), 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) [2022-11-18 20:18:58,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121666 states to 121666 states and 131479 transitions. [2022-11-18 20:18:58,713 INFO L78 Accepts]: Start accepts. Automaton has 121666 states and 131479 transitions. Word has length 721 [2022-11-18 20:18:58,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:18:58,714 INFO L495 AbstractCegarLoop]: Abstraction has 121666 states and 131479 transitions. [2022-11-18 20:18:58,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 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) [2022-11-18 20:18:58,715 INFO L276 IsEmpty]: Start isEmpty. Operand 121666 states and 131479 transitions. [2022-11-18 20:18:58,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 724 [2022-11-18 20:18:58,760 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:18:58,762 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-18 20:18:58,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 20:18:58,763 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:18:58,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:58,764 INFO L85 PathProgramCache]: Analyzing trace with hash 609716404, now seen corresponding path program 1 times [2022-11-18 20:18:58,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:58,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824232325] [2022-11-18 20:18:58,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:58,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:59,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:00,284 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 443 trivial. 0 not checked. [2022-11-18 20:19:00,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:00,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824232325] [2022-11-18 20:19:00,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824232325] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:00,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:19:00,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:19:00,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533648623] [2022-11-18 20:19:00,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:00,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:19:00,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:00,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:19:00,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:19:00,289 INFO L87 Difference]: Start difference. First operand 121666 states and 131479 transitions. Second operand has 4 states, 4 states have (on average 90.0) internal successors, (360), 3 states have internal predecessors, (360), 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) [2022-11-18 20:19:07,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:07,855 INFO L93 Difference]: Finished difference Result 373255 states and 404354 transitions. [2022-11-18 20:19:07,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:19:07,856 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 90.0) internal successors, (360), 3 states have internal predecessors, (360), 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 723 [2022-11-18 20:19:07,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:08,488 INFO L225 Difference]: With dead ends: 373255 [2022-11-18 20:19:08,488 INFO L226 Difference]: Without dead ends: 252342 [2022-11-18 20:19:08,540 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 [2022-11-18 20:19:08,555 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 1627 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 4747 mSolverCounterSat, 655 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1627 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 5402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 655 IncrementalHoareTripleChecker+Valid, 4747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:08,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1627 Valid, 33 Invalid, 5402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [655 Valid, 4747 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-11-18 20:19:08,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252342 states. [2022-11-18 20:19:11,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252342 to 250087. [2022-11-18 20:19:12,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250087 states, 250086 states have (on average 1.0781811056996393) internal successors, (269638), 250086 states have internal predecessors, (269638), 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) [2022-11-18 20:19:12,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250087 states to 250087 states and 269638 transitions. [2022-11-18 20:19:12,572 INFO L78 Accepts]: Start accepts. Automaton has 250087 states and 269638 transitions. Word has length 723 [2022-11-18 20:19:12,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:12,573 INFO L495 AbstractCegarLoop]: Abstraction has 250087 states and 269638 transitions. [2022-11-18 20:19:12,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.0) internal successors, (360), 3 states have internal predecessors, (360), 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) [2022-11-18 20:19:12,573 INFO L276 IsEmpty]: Start isEmpty. Operand 250087 states and 269638 transitions. [2022-11-18 20:19:12,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 882 [2022-11-18 20:19:12,647 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:12,648 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-18 20:19:12,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 20:19:12,648 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:19:12,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:12,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1233513126, now seen corresponding path program 1 times [2022-11-18 20:19:12,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:12,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861812815] [2022-11-18 20:19:12,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:12,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:12,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:13,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1363 backedges. 724 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2022-11-18 20:19:13,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:13,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861812815] [2022-11-18 20:19:13,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861812815] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:13,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:19:13,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:19:13,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143726524] [2022-11-18 20:19:13,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:13,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:19:13,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:13,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:19:13,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:19:13,172 INFO L87 Difference]: Start difference. First operand 250087 states and 269638 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) [2022-11-18 20:19:19,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:19,447 INFO L93 Difference]: Finished difference Result 483650 states and 522848 transitions. [2022-11-18 20:19:19,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:19:19,448 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 881 [2022-11-18 20:19:19,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:19,777 INFO L225 Difference]: With dead ends: 483650 [2022-11-18 20:19:19,777 INFO L226 Difference]: Without dead ends: 270364 [2022-11-18 20:19:19,851 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 [2022-11-18 20:19:19,852 INFO L413 NwaCegarLoop]: 1109 mSDtfsCounter, 571 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2160 mSolverCounterSat, 543 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 2703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 543 IncrementalHoareTripleChecker+Valid, 2160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:19,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 1117 Invalid, 2703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [543 Valid, 2160 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-18 20:19:20,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270364 states. [2022-11-18 20:19:23,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270364 to 220047. [2022-11-18 20:19:23,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220047 states, 220046 states have (on average 1.0771066049825946) internal successors, (237013), 220046 states have internal predecessors, (237013), 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) [2022-11-18 20:19:24,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220047 states to 220047 states and 237013 transitions. [2022-11-18 20:19:24,829 INFO L78 Accepts]: Start accepts. Automaton has 220047 states and 237013 transitions. Word has length 881 [2022-11-18 20:19:24,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:24,830 INFO L495 AbstractCegarLoop]: Abstraction has 220047 states and 237013 transitions. [2022-11-18 20:19:24,830 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) [2022-11-18 20:19:24,831 INFO L276 IsEmpty]: Start isEmpty. Operand 220047 states and 237013 transitions. [2022-11-18 20:19:25,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1094 [2022-11-18 20:19:25,005 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:25,018 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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] [2022-11-18 20:19:25,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 20:19:25,020 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:19:25,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:25,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1360105468, now seen corresponding path program 1 times [2022-11-18 20:19:25,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:25,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987919876] [2022-11-18 20:19:25,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:25,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:25,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat