./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem13_label18.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem13_label18.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8 --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 194fbdc3b3886612fc58320fafee97b7b69b69e44501245b99f854c5cffd6315 --- 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-2329fc7 [2022-12-13 13:57:06,820 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 13:57:06,822 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 13:57:06,840 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 13:57:06,840 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 13:57:06,841 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 13:57:06,843 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 13:57:06,844 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 13:57:06,846 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 13:57:06,847 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 13:57:06,848 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 13:57:06,849 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 13:57:06,849 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 13:57:06,850 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 13:57:06,851 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 13:57:06,852 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 13:57:06,853 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 13:57:06,854 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 13:57:06,856 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 13:57:06,858 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 13:57:06,859 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 13:57:06,860 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 13:57:06,861 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 13:57:06,862 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 13:57:06,866 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 13:57:06,866 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 13:57:06,866 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 13:57:06,867 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 13:57:06,868 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 13:57:06,869 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 13:57:06,869 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 13:57:06,870 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 13:57:06,870 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 13:57:06,871 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 13:57:06,872 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 13:57:06,872 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 13:57:06,873 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 13:57:06,873 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 13:57:06,873 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 13:57:06,874 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 13:57:06,875 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 13:57:06,876 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 13:57:06,895 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 13:57:06,895 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 13:57:06,896 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 13:57:06,896 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 13:57:06,897 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 13:57:06,897 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 13:57:06,897 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 13:57:06,898 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 13:57:06,898 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 13:57:06,898 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 13:57:06,898 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 13:57:06,899 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 13:57:06,899 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 13:57:06,899 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 13:57:06,899 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 13:57:06,899 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 13:57:06,899 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 13:57:06,900 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 13:57:06,900 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 13:57:06,900 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 13:57:06,900 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 13:57:06,900 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 13:57:06,901 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 13:57:06,901 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 13:57:06,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:57:06,901 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 13:57:06,901 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 13:57:06,902 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 13:57:06,902 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 13:57:06,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 13:57:06,902 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 13:57:06,902 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 13:57:06,902 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 13:57:06,903 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 13:57:06,903 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 13:57:06,903 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 194fbdc3b3886612fc58320fafee97b7b69b69e44501245b99f854c5cffd6315 [2022-12-13 13:57:07,097 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 13:57:07,116 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 13:57:07,118 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 13:57:07,119 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 13:57:07,119 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 13:57:07,120 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/eca-rers2012/Problem13_label18.c [2022-12-13 13:57:09,688 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 13:57:10,042 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 13:57:10,043 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/sv-benchmarks/c/eca-rers2012/Problem13_label18.c [2022-12-13 13:57:10,077 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/data/066ad87ce/4ab48a6f0e9e4161a6c999f8c2a7a5ae/FLAGea400d29e [2022-12-13 13:57:10,090 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/data/066ad87ce/4ab48a6f0e9e4161a6c999f8c2a7a5ae [2022-12-13 13:57:10,092 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 13:57:10,093 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 13:57:10,094 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 13:57:10,094 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 13:57:10,097 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 13:57:10,098 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:57:10" (1/1) ... [2022-12-13 13:57:10,099 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30bfe32a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:57:10, skipping insertion in model container [2022-12-13 13:57:10,099 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:57:10" (1/1) ... [2022-12-13 13:57:10,105 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 13:57:10,216 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 13:57:10,403 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/sv-benchmarks/c/eca-rers2012/Problem13_label18.c[8933,8946] [2022-12-13 13:57:11,060 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:57:11,068 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 13:57:11,090 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/sv-benchmarks/c/eca-rers2012/Problem13_label18.c[8933,8946] [2022-12-13 13:57:11,503 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:57:11,519 INFO L208 MainTranslator]: Completed translation [2022-12-13 13:57:11,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:57:11 WrapperNode [2022-12-13 13:57:11,519 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 13:57:11,520 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 13:57:11,520 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 13:57:11,520 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 13:57:11,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:57:11" (1/1) ... [2022-12-13 13:57:11,584 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:57:11" (1/1) ... [2022-12-13 13:57:11,990 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5583 [2022-12-13 13:57:11,990 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 13:57:11,991 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 13:57:11,991 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 13:57:11,991 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 13:57:11,999 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:57:11" (1/1) ... [2022-12-13 13:57:11,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:57:11" (1/1) ... [2022-12-13 13:57:12,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:57:11" (1/1) ... [2022-12-13 13:57:12,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:57:11" (1/1) ... [2022-12-13 13:57:12,265 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:57:11" (1/1) ... [2022-12-13 13:57:12,288 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:57:11" (1/1) ... [2022-12-13 13:57:12,333 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:57:11" (1/1) ... [2022-12-13 13:57:12,346 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:57:11" (1/1) ... [2022-12-13 13:57:12,428 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 13:57:12,429 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 13:57:12,429 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 13:57:12,429 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 13:57:12,430 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:57:11" (1/1) ... [2022-12-13 13:57:12,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:57:12,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:57:12,459 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 13:57:12,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 13:57:12,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 13:57:12,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 13:57:12,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 13:57:12,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 13:57:12,562 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 13:57:12,564 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 13:57:16,948 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 13:57:16,971 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 13:57:16,971 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 13:57:16,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:57:16 BoogieIcfgContainer [2022-12-13 13:57:16,975 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 13:57:16,978 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 13:57:16,978 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 13:57:16,981 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 13:57:16,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 01:57:10" (1/3) ... [2022-12-13 13:57:16,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a6c5f2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:57:16, skipping insertion in model container [2022-12-13 13:57:16,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:57:11" (2/3) ... [2022-12-13 13:57:16,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a6c5f2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:57:16, skipping insertion in model container [2022-12-13 13:57:16,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:57:16" (3/3) ... [2022-12-13 13:57:16,984 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label18.c [2022-12-13 13:57:17,000 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 13:57:17,001 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 13:57:17,079 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 13:57:17,085 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;@48d94ef, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>] [2022-12-13 13:57:17,086 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 13:57:17,094 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 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) [2022-12-13 13:57:17,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-12-13 13:57:17,104 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:57:17,105 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:57:17,105 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:57:17,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:57:17,110 INFO L85 PathProgramCache]: Analyzing trace with hash -696204111, now seen corresponding path program 1 times [2022-12-13 13:57:17,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:57:17,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187830342] [2022-12-13 13:57:17,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:57:17,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:57:17,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:17,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:57:17,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:57:17,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187830342] [2022-12-13 13:57:17,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187830342] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:57:17,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:57:17,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:57:17,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642045588] [2022-12-13 13:57:17,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:57:17,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:57:17,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:57:17,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:57:17,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:57:17,573 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 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 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 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) [2022-12-13 13:57:23,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:57:23,564 INFO L93 Difference]: Finished difference Result 3829 states and 7206 transitions. [2022-12-13 13:57:23,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:57:23,566 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 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 63 [2022-12-13 13:57:23,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:57:23,588 INFO L225 Difference]: With dead ends: 3829 [2022-12-13 13:57:23,589 INFO L226 Difference]: Without dead ends: 2664 [2022-12-13 13:57:23,594 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 [2022-12-13 13:57:23,597 INFO L413 NwaCegarLoop]: 761 mSDtfsCounter, 2667 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 4246 mSolverCounterSat, 1607 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2667 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 5853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1607 IncrementalHoareTripleChecker+Valid, 4246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-12-13 13:57:23,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2667 Valid, 1067 Invalid, 5853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1607 Valid, 4246 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-12-13 13:57:23,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2664 states. [2022-12-13 13:57:23,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2664 to 2663. [2022-12-13 13:57:23,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2663 states, 2662 states have (on average 1.460931630353118) internal successors, (3889), 2662 states have internal predecessors, (3889), 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) [2022-12-13 13:57:23,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2663 states to 2663 states and 3889 transitions. [2022-12-13 13:57:23,709 INFO L78 Accepts]: Start accepts. Automaton has 2663 states and 3889 transitions. Word has length 63 [2022-12-13 13:57:23,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:57:23,709 INFO L495 AbstractCegarLoop]: Abstraction has 2663 states and 3889 transitions. [2022-12-13 13:57:23,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 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) [2022-12-13 13:57:23,710 INFO L276 IsEmpty]: Start isEmpty. Operand 2663 states and 3889 transitions. [2022-12-13 13:57:23,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-12-13 13:57:23,716 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:57:23,717 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, 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] [2022-12-13 13:57:23,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 13:57:23,718 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:57:23,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:57:23,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1618212313, now seen corresponding path program 1 times [2022-12-13 13:57:23,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:57:23,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170819462] [2022-12-13 13:57:23,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:57:23,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:57:23,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:24,029 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:57:24,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:57:24,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170819462] [2022-12-13 13:57:24,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170819462] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:57:24,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:57:24,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:57:24,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489480732] [2022-12-13 13:57:24,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:57:24,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:57:24,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:57:24,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:57:24,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:57:24,033 INFO L87 Difference]: Start difference. First operand 2663 states and 3889 transitions. Second operand has 4 states, 4 states have (on average 47.0) internal successors, (188), 3 states have internal predecessors, (188), 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) [2022-12-13 13:57:30,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:57:30,628 INFO L93 Difference]: Finished difference Result 7864 states and 12669 transitions. [2022-12-13 13:57:30,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:57:30,629 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 3 states have internal predecessors, (188), 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 188 [2022-12-13 13:57:30,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:57:30,649 INFO L225 Difference]: With dead ends: 7864 [2022-12-13 13:57:30,649 INFO L226 Difference]: Without dead ends: 5990 [2022-12-13 13:57:30,652 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 [2022-12-13 13:57:30,653 INFO L413 NwaCegarLoop]: 894 mSDtfsCounter, 1615 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 6333 mSolverCounterSat, 830 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1615 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 7163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 830 IncrementalHoareTripleChecker+Valid, 6333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-12-13 13:57:30,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1615 Valid, 1191 Invalid, 7163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [830 Valid, 6333 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-12-13 13:57:30,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5990 states. [2022-12-13 13:57:30,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5990 to 5859. [2022-12-13 13:57:30,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5859 states, 5858 states have (on average 1.4452031410037556) internal successors, (8466), 5858 states have internal predecessors, (8466), 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) [2022-12-13 13:57:30,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5859 states to 5859 states and 8466 transitions. [2022-12-13 13:57:30,741 INFO L78 Accepts]: Start accepts. Automaton has 5859 states and 8466 transitions. Word has length 188 [2022-12-13 13:57:30,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:57:30,742 INFO L495 AbstractCegarLoop]: Abstraction has 5859 states and 8466 transitions. [2022-12-13 13:57:30,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 3 states have internal predecessors, (188), 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) [2022-12-13 13:57:30,742 INFO L276 IsEmpty]: Start isEmpty. Operand 5859 states and 8466 transitions. [2022-12-13 13:57:30,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-12-13 13:57:30,744 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:57:30,744 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-12-13 13:57:30,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 13:57:30,744 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:57:30,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:57:30,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1994827739, now seen corresponding path program 1 times [2022-12-13 13:57:30,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:57:30,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933813421] [2022-12-13 13:57:30,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:57:30,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:57:30,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:30,911 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-12-13 13:57:30,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:57:30,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933813421] [2022-12-13 13:57:30,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933813421] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:57:30,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:57:30,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:57:30,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129285854] [2022-12-13 13:57:30,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:57:30,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:57:30,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:57:30,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:57:30,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:57:30,914 INFO L87 Difference]: Start difference. First operand 5859 states and 8466 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 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) [2022-12-13 13:57:34,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:57:34,622 INFO L93 Difference]: Finished difference Result 15685 states and 23389 transitions. [2022-12-13 13:57:34,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:57:34,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 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 230 [2022-12-13 13:57:34,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:57:34,642 INFO L225 Difference]: With dead ends: 15685 [2022-12-13 13:57:34,642 INFO L226 Difference]: Without dead ends: 10615 [2022-12-13 13:57:34,647 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 [2022-12-13 13:57:34,648 INFO L413 NwaCegarLoop]: 784 mSDtfsCounter, 918 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 2553 mSolverCounterSat, 757 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 3310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 757 IncrementalHoareTripleChecker+Valid, 2553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-12-13 13:57:34,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 916 Invalid, 3310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [757 Valid, 2553 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-12-13 13:57:34,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10615 states. [2022-12-13 13:57:34,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10615 to 10608. [2022-12-13 13:57:34,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10608 states, 10607 states have (on average 1.3551428302064674) internal successors, (14374), 10607 states have internal predecessors, (14374), 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) [2022-12-13 13:57:34,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10608 states to 10608 states and 14374 transitions. [2022-12-13 13:57:34,802 INFO L78 Accepts]: Start accepts. Automaton has 10608 states and 14374 transitions. Word has length 230 [2022-12-13 13:57:34,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:57:34,802 INFO L495 AbstractCegarLoop]: Abstraction has 10608 states and 14374 transitions. [2022-12-13 13:57:34,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 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) [2022-12-13 13:57:34,802 INFO L276 IsEmpty]: Start isEmpty. Operand 10608 states and 14374 transitions. [2022-12-13 13:57:34,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-12-13 13:57:34,804 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:57:34,804 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:57:34,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 13:57:34,805 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:57:34,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:57:34,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1064647934, now seen corresponding path program 1 times [2022-12-13 13:57:34,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:57:34,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31040959] [2022-12-13 13:57:34,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:57:34,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:57:34,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:35,046 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-12-13 13:57:35,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:57:35,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31040959] [2022-12-13 13:57:35,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31040959] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:57:35,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:57:35,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:57:35,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763202597] [2022-12-13 13:57:35,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:57:35,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:57:35,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:57:35,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:57:35,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:57:35,049 INFO L87 Difference]: Start difference. First operand 10608 states and 14374 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 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) [2022-12-13 13:57:38,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:57:38,605 INFO L93 Difference]: Finished difference Result 28349 states and 39239 transitions. [2022-12-13 13:57:38,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:57:38,605 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 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 244 [2022-12-13 13:57:38,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:57:38,633 INFO L225 Difference]: With dead ends: 28349 [2022-12-13 13:57:38,633 INFO L226 Difference]: Without dead ends: 18530 [2022-12-13 13:57:38,641 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 [2022-12-13 13:57:38,642 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 907 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 2871 mSolverCounterSat, 545 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 3416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 545 IncrementalHoareTripleChecker+Valid, 2871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-12-13 13:57:38,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [907 Valid, 614 Invalid, 3416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [545 Valid, 2871 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-12-13 13:57:38,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18530 states. [2022-12-13 13:57:38,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18530 to 18523. [2022-12-13 13:57:38,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18523 states, 18522 states have (on average 1.3250188964474678) internal successors, (24542), 18522 states have internal predecessors, (24542), 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) [2022-12-13 13:57:38,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18523 states to 18523 states and 24542 transitions. [2022-12-13 13:57:38,858 INFO L78 Accepts]: Start accepts. Automaton has 18523 states and 24542 transitions. Word has length 244 [2022-12-13 13:57:38,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:57:38,859 INFO L495 AbstractCegarLoop]: Abstraction has 18523 states and 24542 transitions. [2022-12-13 13:57:38,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 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) [2022-12-13 13:57:38,859 INFO L276 IsEmpty]: Start isEmpty. Operand 18523 states and 24542 transitions. [2022-12-13 13:57:38,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2022-12-13 13:57:38,863 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:57:38,863 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:57:38,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 13:57:38,864 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:57:38,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:57:38,864 INFO L85 PathProgramCache]: Analyzing trace with hash -372692093, now seen corresponding path program 1 times [2022-12-13 13:57:38,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:57:38,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859599814] [2022-12-13 13:57:38,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:57:38,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:57:38,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:39,053 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-12-13 13:57:39,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:57:39,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859599814] [2022-12-13 13:57:39,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859599814] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:57:39,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:57:39,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:57:39,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347070627] [2022-12-13 13:57:39,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:57:39,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:57:39,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:57:39,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:57:39,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:57:39,056 INFO L87 Difference]: Start difference. First operand 18523 states and 24542 transitions. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 2 states have internal predecessors, (187), 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) [2022-12-13 13:57:42,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:57:42,384 INFO L93 Difference]: Finished difference Result 51208 states and 68744 transitions. [2022-12-13 13:57:42,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:57:42,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 2 states have internal predecessors, (187), 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 [2022-12-13 13:57:42,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:57:42,430 INFO L225 Difference]: With dead ends: 51208 [2022-12-13 13:57:42,431 INFO L226 Difference]: Without dead ends: 33474 [2022-12-13 13:57:42,443 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 [2022-12-13 13:57:42,444 INFO L413 NwaCegarLoop]: 839 mSDtfsCounter, 860 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 2308 mSolverCounterSat, 870 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 3178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 870 IncrementalHoareTripleChecker+Valid, 2308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-12-13 13:57:42,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 986 Invalid, 3178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [870 Valid, 2308 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-12-13 13:57:42,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33474 states. [2022-12-13 13:57:42,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33474 to 31109. [2022-12-13 13:57:42,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31109 states, 31108 states have (on average 1.2544361579015044) internal successors, (39023), 31108 states have internal predecessors, (39023), 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) [2022-12-13 13:57:42,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31109 states to 31109 states and 39023 transitions. [2022-12-13 13:57:42,776 INFO L78 Accepts]: Start accepts. Automaton has 31109 states and 39023 transitions. Word has length 281 [2022-12-13 13:57:42,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:57:42,777 INFO L495 AbstractCegarLoop]: Abstraction has 31109 states and 39023 transitions. [2022-12-13 13:57:42,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 2 states have internal predecessors, (187), 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) [2022-12-13 13:57:42,777 INFO L276 IsEmpty]: Start isEmpty. Operand 31109 states and 39023 transitions. [2022-12-13 13:57:42,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2022-12-13 13:57:42,784 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:57:42,784 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-12-13 13:57:42,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 13:57:42,785 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:57:42,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:57:42,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1436730698, now seen corresponding path program 1 times [2022-12-13 13:57:42,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:57:42,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695869801] [2022-12-13 13:57:42,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:57:42,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:57:42,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:42,929 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 334 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-12-13 13:57:42,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:57:42,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695869801] [2022-12-13 13:57:42,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695869801] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:57:42,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:57:42,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:57:42,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815873444] [2022-12-13 13:57:42,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:57:42,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:57:42,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:57:42,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:57:42,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:57:42,932 INFO L87 Difference]: Start difference. First operand 31109 states and 39023 transitions. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 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) [2022-12-13 13:57:46,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:57:46,539 INFO L93 Difference]: Finished difference Result 87412 states and 110601 transitions. [2022-12-13 13:57:46,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:57:46,540 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 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 303 [2022-12-13 13:57:46,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:57:46,604 INFO L225 Difference]: With dead ends: 87412 [2022-12-13 13:57:46,605 INFO L226 Difference]: Without dead ends: 57092 [2022-12-13 13:57:46,630 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 [2022-12-13 13:57:46,631 INFO L413 NwaCegarLoop]: 792 mSDtfsCounter, 887 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2377 mSolverCounterSat, 920 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 3297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 920 IncrementalHoareTripleChecker+Valid, 2377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-12-13 13:57:46,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [887 Valid, 909 Invalid, 3297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [920 Valid, 2377 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-12-13 13:57:46,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57092 states. [2022-12-13 13:57:47,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57092 to 56294. [2022-12-13 13:57:47,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56294 states, 56293 states have (on average 1.2004512106300962) internal successors, (67577), 56293 states have internal predecessors, (67577), 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) [2022-12-13 13:57:47,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56294 states to 56294 states and 67577 transitions. [2022-12-13 13:57:47,270 INFO L78 Accepts]: Start accepts. Automaton has 56294 states and 67577 transitions. Word has length 303 [2022-12-13 13:57:47,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:57:47,271 INFO L495 AbstractCegarLoop]: Abstraction has 56294 states and 67577 transitions. [2022-12-13 13:57:47,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 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) [2022-12-13 13:57:47,271 INFO L276 IsEmpty]: Start isEmpty. Operand 56294 states and 67577 transitions. [2022-12-13 13:57:47,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2022-12-13 13:57:47,282 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:57:47,283 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:57:47,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 13:57:47,283 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:57:47,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:57:47,284 INFO L85 PathProgramCache]: Analyzing trace with hash 725987894, now seen corresponding path program 1 times [2022-12-13 13:57:47,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:57:47,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465272998] [2022-12-13 13:57:47,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:57:47,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:57:47,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:47,546 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 397 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-12-13 13:57:47,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:57:47,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465272998] [2022-12-13 13:57:47,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465272998] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:57:47,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:57:47,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:57:47,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933449587] [2022-12-13 13:57:47,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:57:47,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:57:47,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:57:47,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:57:47,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:57:47,548 INFO L87 Difference]: Start difference. First operand 56294 states and 67577 transitions. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 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) [2022-12-13 13:57:54,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:57:54,814 INFO L93 Difference]: Finished difference Result 151374 states and 183845 transitions. [2022-12-13 13:57:54,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:57:54,814 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 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 351 [2022-12-13 13:57:54,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:57:54,908 INFO L225 Difference]: With dead ends: 151374 [2022-12-13 13:57:54,909 INFO L226 Difference]: Without dead ends: 95869 [2022-12-13 13:57:54,929 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 [2022-12-13 13:57:54,930 INFO L413 NwaCegarLoop]: 500 mSDtfsCounter, 1735 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 6695 mSolverCounterSat, 1117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1735 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 7812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1117 IncrementalHoareTripleChecker+Valid, 6695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-12-13 13:57:54,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1735 Valid, 742 Invalid, 7812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1117 Valid, 6695 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-12-13 13:57:54,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95869 states. [2022-12-13 13:57:55,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95869 to 95739. [2022-12-13 13:57:55,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95739 states, 95738 states have (on average 1.1949696045457394) internal successors, (114404), 95738 states have internal predecessors, (114404), 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) [2022-12-13 13:57:55,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95739 states to 95739 states and 114404 transitions. [2022-12-13 13:57:55,943 INFO L78 Accepts]: Start accepts. Automaton has 95739 states and 114404 transitions. Word has length 351 [2022-12-13 13:57:55,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:57:55,944 INFO L495 AbstractCegarLoop]: Abstraction has 95739 states and 114404 transitions. [2022-12-13 13:57:55,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 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) [2022-12-13 13:57:55,944 INFO L276 IsEmpty]: Start isEmpty. Operand 95739 states and 114404 transitions. [2022-12-13 13:57:55,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2022-12-13 13:57:55,947 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:57:55,947 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, 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, 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] [2022-12-13 13:57:55,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 13:57:55,947 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:57:55,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:57:55,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1617208669, now seen corresponding path program 1 times [2022-12-13 13:57:55,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:57:55,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406496410] [2022-12-13 13:57:55,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:57:55,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:57:55,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:56,360 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 290 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2022-12-13 13:57:56,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:57:56,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406496410] [2022-12-13 13:57:56,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406496410] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:57:56,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:57:56,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:57:56,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376571772] [2022-12-13 13:57:56,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:57:56,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:57:56,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:57:56,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:57:56,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:57:56,363 INFO L87 Difference]: Start difference. First operand 95739 states and 114404 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 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) [2022-12-13 13:58:00,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:58:00,321 INFO L93 Difference]: Finished difference Result 177308 states and 213524 transitions. [2022-12-13 13:58:00,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:58:00,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 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 360 [2022-12-13 13:58:00,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:58:00,409 INFO L225 Difference]: With dead ends: 177308 [2022-12-13 13:58:00,409 INFO L226 Difference]: Without dead ends: 95749 [2022-12-13 13:58:00,433 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 [2022-12-13 13:58:00,434 INFO L413 NwaCegarLoop]: 1020 mSDtfsCounter, 728 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 2705 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 2709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-12-13 13:58:00,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1201 Invalid, 2709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2705 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-12-13 13:58:00,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95749 states. [2022-12-13 13:58:01,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95749 to 95739. [2022-12-13 13:58:01,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95739 states, 95738 states have (on average 1.1940817648164783) internal successors, (114319), 95738 states have internal predecessors, (114319), 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) [2022-12-13 13:58:01,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95739 states to 95739 states and 114319 transitions. [2022-12-13 13:58:01,389 INFO L78 Accepts]: Start accepts. Automaton has 95739 states and 114319 transitions. Word has length 360 [2022-12-13 13:58:01,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:58:01,390 INFO L495 AbstractCegarLoop]: Abstraction has 95739 states and 114319 transitions. [2022-12-13 13:58:01,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 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) [2022-12-13 13:58:01,390 INFO L276 IsEmpty]: Start isEmpty. Operand 95739 states and 114319 transitions. [2022-12-13 13:58:01,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2022-12-13 13:58:01,396 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:58:01,397 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, 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, 2, 2, 2, 2, 2, 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] [2022-12-13 13:58:01,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 13:58:01,397 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:58:01,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:01,398 INFO L85 PathProgramCache]: Analyzing trace with hash -609588181, now seen corresponding path program 1 times [2022-12-13 13:58:01,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:58:01,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137819460] [2022-12-13 13:58:01,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:58:01,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:58:01,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:58:02,641 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 290 proven. 113 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-12-13 13:58:02,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:58:02,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137819460] [2022-12-13 13:58:02,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137819460] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:58:02,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312330504] [2022-12-13 13:58:02,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:58:02,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:58:02,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:58:02,643 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:58:02,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 13:58:02,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:58:02,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 13:58:02,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:58:02,940 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 290 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-12-13 13:58:02,941 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:58:02,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312330504] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:58:02,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:58:02,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-12-13 13:58:02,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960663034] [2022-12-13 13:58:02,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:58:02,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:58:02,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:58:02,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:58:02,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-12-13 13:58:02,942 INFO L87 Difference]: Start difference. First operand 95739 states and 114319 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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) [2022-12-13 13:58:05,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:58:05,948 INFO L93 Difference]: Finished difference Result 189900 states and 226691 transitions. [2022-12-13 13:58:05,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:58:05,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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 389 [2022-12-13 13:58:05,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:58:06,103 INFO L225 Difference]: With dead ends: 189900 [2022-12-13 13:58:06,104 INFO L226 Difference]: Without dead ends: 94950 [2022-12-13 13:58:06,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 388 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-12-13 13:58:06,139 INFO L413 NwaCegarLoop]: 1366 mSDtfsCounter, 1123 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2467 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1123 SdHoareTripleChecker+Valid, 1448 SdHoareTripleChecker+Invalid, 2918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 2467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-13 13:58:06,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1123 Valid, 1448 Invalid, 2918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [451 Valid, 2467 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-12-13 13:58:06,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94950 states. [2022-12-13 13:58:07,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94950 to 94949. [2022-12-13 13:58:07,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94949 states, 94948 states have (on average 1.1426254370813498) internal successors, (108490), 94948 states have internal predecessors, (108490), 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) [2022-12-13 13:58:07,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94949 states to 94949 states and 108490 transitions. [2022-12-13 13:58:07,374 INFO L78 Accepts]: Start accepts. Automaton has 94949 states and 108490 transitions. Word has length 389 [2022-12-13 13:58:07,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:58:07,374 INFO L495 AbstractCegarLoop]: Abstraction has 94949 states and 108490 transitions. [2022-12-13 13:58:07,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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) [2022-12-13 13:58:07,374 INFO L276 IsEmpty]: Start isEmpty. Operand 94949 states and 108490 transitions. [2022-12-13 13:58:07,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2022-12-13 13:58:07,380 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:58:07,380 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-12-13 13:58:07,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 13:58:07,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-13 13:58:07,582 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:58:07,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:07,583 INFO L85 PathProgramCache]: Analyzing trace with hash 407632997, now seen corresponding path program 1 times [2022-12-13 13:58:07,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:58:07,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220736183] [2022-12-13 13:58:07,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:58:07,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:58:07,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:58:07,932 INFO L134 CoverageAnalysis]: Checked inductivity of 742 backedges. 470 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-12-13 13:58:07,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:58:07,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220736183] [2022-12-13 13:58:07,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220736183] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:58:07,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:58:07,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:58:07,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629673710] [2022-12-13 13:58:07,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:58:07,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:58:07,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:58:07,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:58:07,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:58:07,935 INFO L87 Difference]: Start difference. First operand 94949 states and 108490 transitions. Second operand has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 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) [2022-12-13 13:58:12,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:58:12,262 INFO L93 Difference]: Finished difference Result 221391 states and 255679 transitions. [2022-12-13 13:58:12,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:58:12,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 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 457 [2022-12-13 13:58:12,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:58:12,404 INFO L225 Difference]: With dead ends: 221391 [2022-12-13 13:58:12,404 INFO L226 Difference]: Without dead ends: 127231 [2022-12-13 13:58:12,445 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 [2022-12-13 13:58:12,446 INFO L413 NwaCegarLoop]: 1786 mSDtfsCounter, 780 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 2552 mSolverCounterSat, 715 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 1940 SdHoareTripleChecker+Invalid, 3267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 715 IncrementalHoareTripleChecker+Valid, 2552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-12-13 13:58:12,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 1940 Invalid, 3267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [715 Valid, 2552 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-12-13 13:58:12,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127231 states. [2022-12-13 13:58:13,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127231 to 124852. [2022-12-13 13:58:13,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124852 states, 124851 states have (on average 1.1174279741451811) internal successors, (139512), 124851 states have internal predecessors, (139512), 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) [2022-12-13 13:58:13,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124852 states to 124852 states and 139512 transitions. [2022-12-13 13:58:13,775 INFO L78 Accepts]: Start accepts. Automaton has 124852 states and 139512 transitions. Word has length 457 [2022-12-13 13:58:13,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:58:13,776 INFO L495 AbstractCegarLoop]: Abstraction has 124852 states and 139512 transitions. [2022-12-13 13:58:13,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 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) [2022-12-13 13:58:13,776 INFO L276 IsEmpty]: Start isEmpty. Operand 124852 states and 139512 transitions. [2022-12-13 13:58:13,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2022-12-13 13:58:13,791 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:58:13,791 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-12-13 13:58:13,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 13:58:13,792 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:58:13,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:13,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1993380115, now seen corresponding path program 1 times [2022-12-13 13:58:13,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:58:13,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771263170] [2022-12-13 13:58:13,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:58:13,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:58:13,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:58:14,826 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 362 proven. 110 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-12-13 13:58:14,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:58:14,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771263170] [2022-12-13 13:58:14,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771263170] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:58:14,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977256507] [2022-12-13 13:58:14,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:58:14,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:58:14,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:58:14,827 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:58:14,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 13:58:15,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:58:15,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 13:58:15,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:58:15,116 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2022-12-13 13:58:15,116 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:58:15,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977256507] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:58:15,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:58:15,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-12-13 13:58:15,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454547973] [2022-12-13 13:58:15,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:58:15,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:58:15,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:58:15,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:58:15,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-13 13:58:15,118 INFO L87 Difference]: Start difference. First operand 124852 states and 139512 transitions. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 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) [2022-12-13 13:58:18,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:58:18,795 INFO L93 Difference]: Finished difference Result 279617 states and 315744 transitions. [2022-12-13 13:58:18,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:58:18,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 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 479 [2022-12-13 13:58:18,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:58:18,990 INFO L225 Difference]: With dead ends: 279617 [2022-12-13 13:58:18,990 INFO L226 Difference]: Without dead ends: 155554 [2022-12-13 13:58:19,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 478 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-13 13:58:19,060 INFO L413 NwaCegarLoop]: 704 mSDtfsCounter, 976 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 2389 mSolverCounterSat, 999 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 3388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 999 IncrementalHoareTripleChecker+Valid, 2389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-12-13 13:58:19,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [976 Valid, 789 Invalid, 3388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [999 Valid, 2389 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-12-13 13:58:19,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155554 states. [2022-12-13 13:58:20,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155554 to 153959. [2022-12-13 13:58:20,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153959 states, 153958 states have (on average 1.1226828095974226) internal successors, (172846), 153958 states have internal predecessors, (172846), 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) [2022-12-13 13:58:20,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153959 states to 153959 states and 172846 transitions. [2022-12-13 13:58:20,649 INFO L78 Accepts]: Start accepts. Automaton has 153959 states and 172846 transitions. Word has length 479 [2022-12-13 13:58:20,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:58:20,650 INFO L495 AbstractCegarLoop]: Abstraction has 153959 states and 172846 transitions. [2022-12-13 13:58:20,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 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) [2022-12-13 13:58:20,650 INFO L276 IsEmpty]: Start isEmpty. Operand 153959 states and 172846 transitions. [2022-12-13 13:58:20,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2022-12-13 13:58:20,667 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:58:20,667 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, 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, 5, 4, 4, 3, 3, 3, 3, 3, 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] [2022-12-13 13:58:20,672 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 13:58:20,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:58:20,869 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:58:20,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:20,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1392152019, now seen corresponding path program 1 times [2022-12-13 13:58:20,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:58:20,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536080062] [2022-12-13 13:58:20,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:58:20,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:58:20,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:58:21,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1222 backedges. 921 proven. 0 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2022-12-13 13:58:21,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:58:21,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536080062] [2022-12-13 13:58:21,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536080062] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:58:21,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:58:21,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:58:21,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150687414] [2022-12-13 13:58:21,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:58:21,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:58:21,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:58:21,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:58:21,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:58:21,140 INFO L87 Difference]: Start difference. First operand 153959 states and 172846 transitions. Second operand has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 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) [2022-12-13 13:58:25,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:58:25,548 INFO L93 Difference]: Finished difference Result 307136 states and 344913 transitions. [2022-12-13 13:58:25,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:58:25,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 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 576 [2022-12-13 13:58:25,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:58:25,742 INFO L225 Difference]: With dead ends: 307136 [2022-12-13 13:58:25,742 INFO L226 Difference]: Without dead ends: 153966 [2022-12-13 13:58:25,819 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 [2022-12-13 13:58:25,820 INFO L413 NwaCegarLoop]: 1423 mSDtfsCounter, 938 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 2493 mSolverCounterSat, 597 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 1515 SdHoareTripleChecker+Invalid, 3090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 597 IncrementalHoareTripleChecker+Valid, 2493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-12-13 13:58:25,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [938 Valid, 1515 Invalid, 3090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [597 Valid, 2493 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-12-13 13:58:25,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153966 states. [2022-12-13 13:58:27,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153966 to 153952. [2022-12-13 13:58:27,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153952 states, 153951 states have (on average 1.0902949639820463) internal successors, (167852), 153951 states have internal predecessors, (167852), 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) [2022-12-13 13:58:27,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153952 states to 153952 states and 167852 transitions. [2022-12-13 13:58:27,624 INFO L78 Accepts]: Start accepts. Automaton has 153952 states and 167852 transitions. Word has length 576 [2022-12-13 13:58:27,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:58:27,625 INFO L495 AbstractCegarLoop]: Abstraction has 153952 states and 167852 transitions. [2022-12-13 13:58:27,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 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) [2022-12-13 13:58:27,625 INFO L276 IsEmpty]: Start isEmpty. Operand 153952 states and 167852 transitions. [2022-12-13 13:58:27,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 618 [2022-12-13 13:58:27,646 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:58:27,646 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, 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, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:58:27,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 13:58:27,647 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:58:27,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:27,647 INFO L85 PathProgramCache]: Analyzing trace with hash -137971810, now seen corresponding path program 1 times [2022-12-13 13:58:27,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:58:27,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469773293] [2022-12-13 13:58:27,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:58:27,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:58:27,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:58:28,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1257 backedges. 715 proven. 0 refuted. 0 times theorem prover too weak. 542 trivial. 0 not checked. [2022-12-13 13:58:28,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:58:28,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469773293] [2022-12-13 13:58:28,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469773293] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:58:28,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:58:28,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 13:58:28,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338361347] [2022-12-13 13:58:28,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:58:28,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 13:58:28,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:58:28,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 13:58:28,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:58:28,917 INFO L87 Difference]: Start difference. First operand 153952 states and 167852 transitions. Second operand has 5 states, 5 states have (on average 69.0) internal successors, (345), 5 states have internal predecessors, (345), 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) [2022-12-13 13:58:32,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:58:32,715 INFO L93 Difference]: Finished difference Result 296072 states and 324419 transitions. [2022-12-13 13:58:32,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 13:58:32,715 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 69.0) internal successors, (345), 5 states have internal predecessors, (345), 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 617 [2022-12-13 13:58:32,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:58:32,890 INFO L225 Difference]: With dead ends: 296072 [2022-12-13 13:58:32,891 INFO L226 Difference]: Without dead ends: 162592 [2022-12-13 13:58:32,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:58:32,935 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 1328 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 3903 mSolverCounterSat, 858 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1328 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 4761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 858 IncrementalHoareTripleChecker+Valid, 3903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:58:32,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1328 Valid, 412 Invalid, 4761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [858 Valid, 3903 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-12-13 13:58:33,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162592 states. [2022-12-13 13:58:34,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162592 to 162577. [2022-12-13 13:58:34,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162577 states, 162576 states have (on average 1.0854369648656628) internal successors, (176466), 162576 states have internal predecessors, (176466), 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) [2022-12-13 13:58:34,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162577 states to 162577 states and 176466 transitions. [2022-12-13 13:58:34,484 INFO L78 Accepts]: Start accepts. Automaton has 162577 states and 176466 transitions. Word has length 617 [2022-12-13 13:58:34,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:58:34,484 INFO L495 AbstractCegarLoop]: Abstraction has 162577 states and 176466 transitions. [2022-12-13 13:58:34,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.0) internal successors, (345), 5 states have internal predecessors, (345), 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) [2022-12-13 13:58:34,485 INFO L276 IsEmpty]: Start isEmpty. Operand 162577 states and 176466 transitions. [2022-12-13 13:58:34,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 668 [2022-12-13 13:58:34,507 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:58:34,508 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:58:34,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 13:58:34,508 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:58:34,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:34,508 INFO L85 PathProgramCache]: Analyzing trace with hash 2144326472, now seen corresponding path program 1 times [2022-12-13 13:58:34,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:58:34,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482907046] [2022-12-13 13:58:34,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:58:34,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:58:34,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:58:34,976 INFO L134 CoverageAnalysis]: Checked inductivity of 828 backedges. 679 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-12-13 13:58:34,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:58:34,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482907046] [2022-12-13 13:58:34,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482907046] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:58:34,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:58:34,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 13:58:34,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240055749] [2022-12-13 13:58:34,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:58:34,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:58:34,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:58:34,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:58:34,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:58:34,978 INFO L87 Difference]: Start difference. First operand 162577 states and 176466 transitions. Second operand has 4 states, 4 states have (on average 130.0) internal successors, (520), 4 states have internal predecessors, (520), 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) [2022-12-13 13:58:43,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:58:43,264 INFO L93 Difference]: Finished difference Result 424533 states and 462211 transitions. [2022-12-13 13:58:43,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:58:43,265 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 130.0) internal successors, (520), 4 states have internal predecessors, (520), 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 667 [2022-12-13 13:58:43,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:58:43,557 INFO L225 Difference]: With dead ends: 424533 [2022-12-13 13:58:43,557 INFO L226 Difference]: Without dead ends: 262745 [2022-12-13 13:58:43,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:58:43,601 INFO L413 NwaCegarLoop]: 655 mSDtfsCounter, 1730 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 6464 mSolverCounterSat, 1180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1730 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 7644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1180 IncrementalHoareTripleChecker+Valid, 6464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-12-13 13:58:43,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1730 Valid, 922 Invalid, 7644 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1180 Valid, 6464 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-12-13 13:58:43,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262745 states. [2022-12-13 13:58:45,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262745 to 249188. [2022-12-13 13:58:45,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249188 states, 249187 states have (on average 1.0806462616428625) internal successors, (269283), 249187 states have internal predecessors, (269283), 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) [2022-12-13 13:58:46,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249188 states to 249188 states and 269283 transitions. [2022-12-13 13:58:46,303 INFO L78 Accepts]: Start accepts. Automaton has 249188 states and 269283 transitions. Word has length 667 [2022-12-13 13:58:46,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:58:46,304 INFO L495 AbstractCegarLoop]: Abstraction has 249188 states and 269283 transitions. [2022-12-13 13:58:46,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 130.0) internal successors, (520), 4 states have internal predecessors, (520), 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) [2022-12-13 13:58:46,304 INFO L276 IsEmpty]: Start isEmpty. Operand 249188 states and 269283 transitions. [2022-12-13 13:58:46,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 728 [2022-12-13 13:58:46,334 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:58:46,334 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-12-13 13:58:46,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 13:58:46,335 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:58:46,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:46,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1937828288, now seen corresponding path program 1 times [2022-12-13 13:58:46,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:58:46,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4655982] [2022-12-13 13:58:46,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:58:46,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:58:46,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:58:47,739 INFO L134 CoverageAnalysis]: Checked inductivity of 967 backedges. 600 proven. 110 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2022-12-13 13:58:47,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:58:47,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4655982] [2022-12-13 13:58:47,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4655982] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:58:47,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028033027] [2022-12-13 13:58:47,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:58:47,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:58:47,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:58:47,740 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:58:47,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 13:58:48,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:58:48,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 910 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 13:58:48,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:58:48,062 INFO L134 CoverageAnalysis]: Checked inductivity of 967 backedges. 597 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2022-12-13 13:58:48,062 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:58:48,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028033027] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:58:48,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:58:48,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-12-13 13:58:48,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966383805] [2022-12-13 13:58:48,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:58:48,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:58:48,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:58:48,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:58:48,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-13 13:58:48,064 INFO L87 Difference]: Start difference. First operand 249188 states and 269283 transitions. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 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) [2022-12-13 13:58:53,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:58:53,170 INFO L93 Difference]: Finished difference Result 529055 states and 572873 transitions. [2022-12-13 13:58:53,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:58:53,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 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 727 [2022-12-13 13:58:53,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:58:53,692 INFO L225 Difference]: With dead ends: 529055 [2022-12-13 13:58:53,692 INFO L226 Difference]: Without dead ends: 301124 [2022-12-13 13:58:53,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 726 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-13 13:58:53,748 INFO L413 NwaCegarLoop]: 1627 mSDtfsCounter, 916 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 2609 mSolverCounterSat, 746 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 1738 SdHoareTripleChecker+Invalid, 3355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 746 IncrementalHoareTripleChecker+Valid, 2609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-12-13 13:58:53,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [916 Valid, 1738 Invalid, 3355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [746 Valid, 2609 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-12-13 13:58:53,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301124 states. [2022-12-13 13:58:56,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301124 to 257035. [2022-12-13 13:58:56,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257035 states, 257034 states have (on average 1.0725546036711096) internal successors, (275683), 257034 states have internal predecessors, (275683), 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) [2022-12-13 13:58:56,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257035 states to 257035 states and 275683 transitions. [2022-12-13 13:58:56,590 INFO L78 Accepts]: Start accepts. Automaton has 257035 states and 275683 transitions. Word has length 727 [2022-12-13 13:58:56,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:58:56,591 INFO L495 AbstractCegarLoop]: Abstraction has 257035 states and 275683 transitions. [2022-12-13 13:58:56,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 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) [2022-12-13 13:58:56,591 INFO L276 IsEmpty]: Start isEmpty. Operand 257035 states and 275683 transitions. [2022-12-13 13:58:56,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 741 [2022-12-13 13:58:56,619 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:58:56,620 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:58:56,625 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 13:58:56,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 13:58:56,822 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:58:56,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:56,823 INFO L85 PathProgramCache]: Analyzing trace with hash -2079870455, now seen corresponding path program 1 times [2022-12-13 13:58:56,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:58:56,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410110913] [2022-12-13 13:58:56,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:58:56,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:58:56,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:58:57,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1180 backedges. 690 proven. 0 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2022-12-13 13:58:57,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:58:57,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410110913] [2022-12-13 13:58:57,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410110913] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:58:57,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:58:57,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:58:57,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168281217] [2022-12-13 13:58:57,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:58:57,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:58:57,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:58:57,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:58:57,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:58:57,327 INFO L87 Difference]: Start difference. First operand 257035 states and 275683 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) [2022-12-13 13:59:02,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:59:02,228 INFO L93 Difference]: Finished difference Result 546371 states and 588698 transitions. [2022-12-13 13:59:02,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:59:02,229 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 740 [2022-12-13 13:59:02,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:59:02,685 INFO L225 Difference]: With dead ends: 546371 [2022-12-13 13:59:02,685 INFO L226 Difference]: Without dead ends: 312956 [2022-12-13 13:59:02,786 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 [2022-12-13 13:59:02,786 INFO L413 NwaCegarLoop]: 537 mSDtfsCounter, 760 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 2417 mSolverCounterSat, 1017 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 3434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1017 IncrementalHoareTripleChecker+Valid, 2417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-12-13 13:59:02,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [760 Valid, 611 Invalid, 3434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1017 Valid, 2417 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-12-13 13:59:03,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312956 states. [2022-12-13 13:59:05,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312956 to 312163. [2022-12-13 13:59:06,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312163 states, 312162 states have (on average 1.06809605269059) internal successors, (333419), 312162 states have internal predecessors, (333419), 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) [2022-12-13 13:59:06,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312163 states to 312163 states and 333419 transitions. [2022-12-13 13:59:06,546 INFO L78 Accepts]: Start accepts. Automaton has 312163 states and 333419 transitions. Word has length 740 [2022-12-13 13:59:06,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:59:06,546 INFO L495 AbstractCegarLoop]: Abstraction has 312163 states and 333419 transitions. [2022-12-13 13:59:06,546 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) [2022-12-13 13:59:06,546 INFO L276 IsEmpty]: Start isEmpty. Operand 312163 states and 333419 transitions. [2022-12-13 13:59:06,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 900 [2022-12-13 13:59:06,599 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:59:06,599 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 13:59:06,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 13:59:06,600 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:59:06,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:59:06,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1590835446, now seen corresponding path program 1 times [2022-12-13 13:59:06,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:59:06,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012787409] [2022-12-13 13:59:06,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:59:06,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:59:06,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:59:08,143 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 521 proven. 110 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-12-13 13:59:08,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:59:08,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012787409] [2022-12-13 13:59:08,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012787409] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:59:08,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023228966] [2022-12-13 13:59:08,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:59:08,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:59:08,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:59:08,145 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:59:08,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 13:59:08,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:59:08,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 1054 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 13:59:08,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:59:08,475 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked. [2022-12-13 13:59:08,475 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:59:08,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023228966] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:59:08,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:59:08,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2022-12-13 13:59:08,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543449719] [2022-12-13 13:59:08,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:59:08,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:59:08,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:59:08,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:59:08,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:59:08,478 INFO L87 Difference]: Start difference. First operand 312163 states and 333419 transitions. Second operand has 3 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 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) [2022-12-13 13:59:14,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:59:14,455 INFO L93 Difference]: Finished difference Result 664555 states and 710223 transitions. [2022-12-13 13:59:14,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:59:14,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 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 899 [2022-12-13 13:59:14,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:59:14,905 INFO L225 Difference]: With dead ends: 664555 [2022-12-13 13:59:14,906 INFO L226 Difference]: Without dead ends: 353181 [2022-12-13 13:59:15,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 903 GetRequests, 898 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:59:15,028 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 971 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 2711 mSolverCounterSat, 1034 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 971 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 3745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1034 IncrementalHoareTripleChecker+Valid, 2711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-12-13 13:59:15,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [971 Valid, 287 Invalid, 3745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1034 Valid, 2711 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-12-13 13:59:15,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353181 states. [2022-12-13 13:59:18,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353181 to 335769. [2022-12-13 13:59:18,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335769 states, 335768 states have (on average 1.0693186962426438) internal successors, (359043), 335768 states have internal predecessors, (359043), 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) [2022-12-13 13:59:18,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335769 states to 335769 states and 359043 transitions. [2022-12-13 13:59:18,939 INFO L78 Accepts]: Start accepts. Automaton has 335769 states and 359043 transitions. Word has length 899 [2022-12-13 13:59:18,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:59:18,940 INFO L495 AbstractCegarLoop]: Abstraction has 335769 states and 359043 transitions. [2022-12-13 13:59:18,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 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) [2022-12-13 13:59:18,940 INFO L276 IsEmpty]: Start isEmpty. Operand 335769 states and 359043 transitions. [2022-12-13 13:59:19,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1016 [2022-12-13 13:59:19,030 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:59:19,031 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:59:19,036 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 13:59:19,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 13:59:19,233 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:59:19,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:59:19,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1547723911, now seen corresponding path program 1 times [2022-12-13 13:59:19,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:59:19,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305839974] [2022-12-13 13:59:19,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:59:19,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:59:19,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:59:21,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1414 backedges. 907 proven. 110 refuted. 0 times theorem prover too weak. 397 trivial. 0 not checked. [2022-12-13 13:59:21,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:59:21,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305839974] [2022-12-13 13:59:21,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305839974] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:59:21,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260313412] [2022-12-13 13:59:21,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:59:21,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:59:21,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:59:21,359 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:59:21,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 13:59:21,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:59:21,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 1201 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 13:59:21,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:59:21,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1414 backedges. 1229 proven. 0 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2022-12-13 13:59:21,845 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:59:21,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260313412] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:59:21,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:59:21,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2022-12-13 13:59:21,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431313748] [2022-12-13 13:59:21,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:59:21,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:59:21,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:59:21,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:59:21,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:59:21,847 INFO L87 Difference]: Start difference. First operand 335769 states and 359043 transitions. Second operand has 3 states, 3 states have (on average 277.3333333333333) internal successors, (832), 3 states have internal predecessors, (832), 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) [2022-12-13 13:59:27,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:59:27,235 INFO L93 Difference]: Finished difference Result 666815 states and 713064 transitions. [2022-12-13 13:59:27,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:59:27,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 277.3333333333333) internal successors, (832), 3 states have internal predecessors, (832), 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 1015 [2022-12-13 13:59:27,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:59:27,691 INFO L225 Difference]: With dead ends: 666815 [2022-12-13 13:59:27,691 INFO L226 Difference]: Without dead ends: 331835 [2022-12-13 13:59:27,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1019 GetRequests, 1014 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:59:27,966 INFO L413 NwaCegarLoop]: 1668 mSDtfsCounter, 595 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 2442 mSolverCounterSat, 399 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 1806 SdHoareTripleChecker+Invalid, 2841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 399 IncrementalHoareTripleChecker+Valid, 2442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-12-13 13:59:27,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [595 Valid, 1806 Invalid, 2841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [399 Valid, 2442 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-12-13 13:59:28,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331835 states. [2022-12-13 13:59:31,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331835 to 320805. [2022-12-13 13:59:31,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320805 states, 320804 states have (on average 1.0559251131532026) internal successors, (338745), 320804 states have internal predecessors, (338745), 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) [2022-12-13 13:59:31,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320805 states to 320805 states and 338745 transitions. [2022-12-13 13:59:31,481 INFO L78 Accepts]: Start accepts. Automaton has 320805 states and 338745 transitions. Word has length 1015 [2022-12-13 13:59:31,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:59:31,482 INFO L495 AbstractCegarLoop]: Abstraction has 320805 states and 338745 transitions. [2022-12-13 13:59:31,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 277.3333333333333) internal successors, (832), 3 states have internal predecessors, (832), 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) [2022-12-13 13:59:31,482 INFO L276 IsEmpty]: Start isEmpty. Operand 320805 states and 338745 transitions. [2022-12-13 13:59:31,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1128 [2022-12-13 13:59:31,799 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:59:31,799 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:59:31,804 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 13:59:32,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 13:59:32,002 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:59:32,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:59:32,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1519719438, now seen corresponding path program 1 times [2022-12-13 13:59:32,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:59:32,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978561403] [2022-12-13 13:59:32,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:59:32,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:59:32,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:59:32,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2129 backedges. 1459 proven. 0 refuted. 0 times theorem prover too weak. 670 trivial. 0 not checked. [2022-12-13 13:59:32,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:59:32,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978561403] [2022-12-13 13:59:32,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978561403] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:59:32,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:59:32,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:59:32,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289595871] [2022-12-13 13:59:32,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:59:32,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:59:32,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:59:32,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:59:32,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:59:32,646 INFO L87 Difference]: Start difference. First operand 320805 states and 338745 transitions. Second operand has 3 states, 3 states have (on average 245.33333333333334) internal successors, (736), 3 states have internal predecessors, (736), 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) [2022-12-13 13:59:37,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:59:37,682 INFO L93 Difference]: Finished difference Result 628186 states and 663258 transitions. [2022-12-13 13:59:37,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:59:37,683 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 245.33333333333334) internal successors, (736), 3 states have internal predecessors, (736), 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 1127 [2022-12-13 13:59:37,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:59:38,044 INFO L225 Difference]: With dead ends: 628186 [2022-12-13 13:59:38,044 INFO L226 Difference]: Without dead ends: 307383 [2022-12-13 13:59:38,136 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 [2022-12-13 13:59:38,136 INFO L413 NwaCegarLoop]: 1459 mSDtfsCounter, 999 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 2316 mSolverCounterSat, 579 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 999 SdHoareTripleChecker+Valid, 1583 SdHoareTripleChecker+Invalid, 2895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 579 IncrementalHoareTripleChecker+Valid, 2316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-12-13 13:59:38,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [999 Valid, 1583 Invalid, 2895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [579 Valid, 2316 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-12-13 13:59:38,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307383 states. [2022-12-13 13:59:40,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307383 to 289266. [2022-12-13 13:59:40,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289266 states, 289265 states have (on average 1.040474996975092) internal successors, (300973), 289265 states have internal predecessors, (300973), 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) [2022-12-13 13:59:41,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289266 states to 289266 states and 300973 transitions. [2022-12-13 13:59:41,417 INFO L78 Accepts]: Start accepts. Automaton has 289266 states and 300973 transitions. Word has length 1127 [2022-12-13 13:59:41,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:59:41,418 INFO L495 AbstractCegarLoop]: Abstraction has 289266 states and 300973 transitions. [2022-12-13 13:59:41,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 245.33333333333334) internal successors, (736), 3 states have internal predecessors, (736), 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) [2022-12-13 13:59:41,418 INFO L276 IsEmpty]: Start isEmpty. Operand 289266 states and 300973 transitions. [2022-12-13 13:59:41,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1168 [2022-12-13 13:59:41,518 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:59:41,519 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:59:41,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 13:59:41,519 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:59:41,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:59:41,520 INFO L85 PathProgramCache]: Analyzing trace with hash -887450287, now seen corresponding path program 1 times [2022-12-13 13:59:41,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:59:41,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856437466] [2022-12-13 13:59:41,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:59:41,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:59:41,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:59:43,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 819 proven. 110 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2022-12-13 13:59:43,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:59:43,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856437466] [2022-12-13 13:59:43,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856437466] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:59:43,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29265607] [2022-12-13 13:59:43,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:59:43,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:59:43,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:59:43,916 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:59:43,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 13:59:44,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:59:44,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 1357 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 13:59:44,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:59:45,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 805 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-12-13 13:59:45,021 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:59:45,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29265607] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:59:45,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:59:45,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-12-13 13:59:45,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204188440] [2022-12-13 13:59:45,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:59:45,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:59:45,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:59:45,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:59:45,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:59:45,024 INFO L87 Difference]: Start difference. First operand 289266 states and 300973 transitions. Second operand has 3 states, 3 states have (on average 270.3333333333333) internal successors, (811), 2 states have internal predecessors, (811), 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) [2022-12-13 13:59:49,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:59:49,668 INFO L93 Difference]: Finished difference Result 581694 states and 605759 transitions. [2022-12-13 13:59:49,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:59:49,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 270.3333333333333) internal successors, (811), 2 states have internal predecessors, (811), 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 1167 [2022-12-13 13:59:49,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:59:50,037 INFO L225 Difference]: With dead ends: 581694 [2022-12-13 13:59:50,037 INFO L226 Difference]: Without dead ends: 307383 [2022-12-13 13:59:50,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1171 GetRequests, 1166 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:59:50,275 INFO L413 NwaCegarLoop]: 986 mSDtfsCounter, 542 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 2425 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 2569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 2425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-12-13 13:59:50,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [542 Valid, 1114 Invalid, 2569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 2425 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-12-13 13:59:50,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307383 states. [2022-12-13 13:59:53,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307383 to 303436. [2022-12-13 13:59:53,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303436 states, 303435 states have (on average 1.0361593092425065) internal successors, (314407), 303435 states have internal predecessors, (314407), 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) [2022-12-13 13:59:53,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303436 states to 303436 states and 314407 transitions. [2022-12-13 13:59:53,632 INFO L78 Accepts]: Start accepts. Automaton has 303436 states and 314407 transitions. Word has length 1167 [2022-12-13 13:59:53,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:59:53,632 INFO L495 AbstractCegarLoop]: Abstraction has 303436 states and 314407 transitions. [2022-12-13 13:59:53,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 270.3333333333333) internal successors, (811), 2 states have internal predecessors, (811), 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) [2022-12-13 13:59:53,632 INFO L276 IsEmpty]: Start isEmpty. Operand 303436 states and 314407 transitions. [2022-12-13 13:59:53,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1301 [2022-12-13 13:59:53,747 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:59:53,748 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:59:53,753 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 13:59:53,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:59:53,950 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:59:53,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:59:53,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1494364561, now seen corresponding path program 1 times [2022-12-13 13:59:53,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:59:53,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572490988] [2022-12-13 13:59:53,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:59:53,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:59:54,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:59:56,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1979 backedges. 1472 proven. 75 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2022-12-13 13:59:56,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:59:56,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572490988] [2022-12-13 13:59:56,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572490988] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:59:56,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827026815] [2022-12-13 13:59:56,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:59:56,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:59:56,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:59:56,180 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:59:56,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 13:59:56,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:59:56,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 1541 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 13:59:56,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:59:57,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1979 backedges. 1610 proven. 0 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2022-12-13 13:59:57,250 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:59:57,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827026815] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:59:57,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:59:57,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2022-12-13 13:59:57,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074846509] [2022-12-13 13:59:57,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:59:57,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:59:57,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:59:57,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:59:57,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:59:57,253 INFO L87 Difference]: Start difference. First operand 303436 states and 314407 transitions. Second operand has 4 states, 4 states have (on average 248.75) internal successors, (995), 4 states have internal predecessors, (995), 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) [2022-12-13 14:00:02,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:00:02,017 INFO L93 Difference]: Finished difference Result 595852 states and 617673 transitions. [2022-12-13 14:00:02,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 14:00:02,018 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 248.75) internal successors, (995), 4 states have internal predecessors, (995), 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 1300 [2022-12-13 14:00:02,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:00:02,383 INFO L225 Difference]: With dead ends: 595852 [2022-12-13 14:00:02,383 INFO L226 Difference]: Without dead ends: 307368 [2022-12-13 14:00:02,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1303 GetRequests, 1300 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:00:02,495 INFO L413 NwaCegarLoop]: 596 mSDtfsCounter, 2237 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 3223 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2237 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 3657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 3223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-12-13 14:00:02,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2237 Valid, 742 Invalid, 3657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 3223 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-12-13 14:00:02,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307368 states. [2022-12-13 14:00:05,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307368 to 298706. [2022-12-13 14:00:05,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298706 states, 298705 states have (on average 1.0331832409902746) internal successors, (308617), 298705 states have internal predecessors, (308617), 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) [2022-12-13 14:00:05,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298706 states to 298706 states and 308617 transitions. [2022-12-13 14:00:05,770 INFO L78 Accepts]: Start accepts. Automaton has 298706 states and 308617 transitions. Word has length 1300 [2022-12-13 14:00:05,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:00:05,771 INFO L495 AbstractCegarLoop]: Abstraction has 298706 states and 308617 transitions. [2022-12-13 14:00:05,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 248.75) internal successors, (995), 4 states have internal predecessors, (995), 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) [2022-12-13 14:00:05,771 INFO L276 IsEmpty]: Start isEmpty. Operand 298706 states and 308617 transitions. [2022-12-13 14:00:06,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1334 [2022-12-13 14:00:06,112 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:00:06,113 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, 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, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 14:00:06,119 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 14:00:06,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:00:06,315 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:00:06,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:00:06,315 INFO L85 PathProgramCache]: Analyzing trace with hash 129564660, now seen corresponding path program 1 times [2022-12-13 14:00:06,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:00:06,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553804204] [2022-12-13 14:00:06,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:00:06,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:00:06,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:00:07,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1587 backedges. 305 proven. 0 refuted. 0 times theorem prover too weak. 1282 trivial. 0 not checked. [2022-12-13 14:00:07,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:00:07,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553804204] [2022-12-13 14:00:07,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553804204] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:00:07,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:00:07,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 14:00:07,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910223351] [2022-12-13 14:00:07,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:00:07,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:00:07,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:00:07,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:00:07,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:00:07,410 INFO L87 Difference]: Start difference. First operand 298706 states and 308617 transitions. Second operand has 3 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 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) [2022-12-13 14:00:12,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:00:12,059 INFO L93 Difference]: Finished difference Result 635208 states and 656581 transitions. [2022-12-13 14:00:12,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:00:12,059 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 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 1333 [2022-12-13 14:00:12,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:00:12,479 INFO L225 Difference]: With dead ends: 635208 [2022-12-13 14:00:12,479 INFO L226 Difference]: Without dead ends: 353822 [2022-12-13 14:00:12,739 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 [2022-12-13 14:00:12,739 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 898 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 2610 mSolverCounterSat, 459 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 898 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 3069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 459 IncrementalHoareTripleChecker+Valid, 2610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-12-13 14:00:12,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [898 Valid, 577 Invalid, 3069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [459 Valid, 2610 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-12-13 14:00:13,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353822 states. [2022-12-13 14:00:15,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353822 to 313663. [2022-12-13 14:00:16,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313663 states, 313662 states have (on average 1.0322735938685592) internal successors, (323785), 313662 states have internal predecessors, (323785), 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) [2022-12-13 14:00:16,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313663 states to 313663 states and 323785 transitions. [2022-12-13 14:00:16,494 INFO L78 Accepts]: Start accepts. Automaton has 313663 states and 323785 transitions. Word has length 1333 [2022-12-13 14:00:16,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:00:16,495 INFO L495 AbstractCegarLoop]: Abstraction has 313663 states and 323785 transitions. [2022-12-13 14:00:16,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 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) [2022-12-13 14:00:16,495 INFO L276 IsEmpty]: Start isEmpty. Operand 313663 states and 323785 transitions. [2022-12-13 14:00:16,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1465 [2022-12-13 14:00:16,625 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:00:16,626 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:00:16,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 14:00:16,626 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:00:16,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:00:16,626 INFO L85 PathProgramCache]: Analyzing trace with hash -142249006, now seen corresponding path program 1 times [2022-12-13 14:00:16,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:00:16,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825528762] [2022-12-13 14:00:16,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:00:16,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:00:16,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:00:17,564 INFO L134 CoverageAnalysis]: Checked inductivity of 2641 backedges. 1704 proven. 0 refuted. 0 times theorem prover too weak. 937 trivial. 0 not checked. [2022-12-13 14:00:17,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:00:17,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825528762] [2022-12-13 14:00:17,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825528762] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:00:17,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:00:17,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 14:00:17,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608503729] [2022-12-13 14:00:17,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:00:17,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:00:17,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:00:17,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:00:17,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:00:17,567 INFO L87 Difference]: Start difference. First operand 313663 states and 323785 transitions. Second operand has 3 states, 3 states have (on average 340.6666666666667) internal successors, (1022), 3 states have internal predecessors, (1022), 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) [2022-12-13 14:00:21,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:00:21,775 INFO L93 Difference]: Finished difference Result 652530 states and 673986 transitions. [2022-12-13 14:00:21,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:00:21,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 340.6666666666667) internal successors, (1022), 3 states have internal predecessors, (1022), 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 1464 [2022-12-13 14:00:21,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:00:22,159 INFO L225 Difference]: With dead ends: 652530 [2022-12-13 14:00:22,160 INFO L226 Difference]: Without dead ends: 339656 [2022-12-13 14:00:22,248 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 [2022-12-13 14:00:22,248 INFO L413 NwaCegarLoop]: 1176 mSDtfsCounter, 490 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 2283 mSolverCounterSat, 634 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 1214 SdHoareTripleChecker+Invalid, 2917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 634 IncrementalHoareTripleChecker+Valid, 2283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-12-13 14:00:22,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 1214 Invalid, 2917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [634 Valid, 2283 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-12-13 14:00:22,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339656 states. [2022-12-13 14:00:25,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339656 to 330182. [2022-12-13 14:00:25,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330182 states, 330181 states have (on average 1.0314403312122744) internal successors, (340562), 330181 states have internal predecessors, (340562), 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) [2022-12-13 14:00:25,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330182 states to 330182 states and 340562 transitions. [2022-12-13 14:00:25,983 INFO L78 Accepts]: Start accepts. Automaton has 330182 states and 340562 transitions. Word has length 1464 [2022-12-13 14:00:25,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:00:25,983 INFO L495 AbstractCegarLoop]: Abstraction has 330182 states and 340562 transitions. [2022-12-13 14:00:25,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 340.6666666666667) internal successors, (1022), 3 states have internal predecessors, (1022), 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) [2022-12-13 14:00:25,984 INFO L276 IsEmpty]: Start isEmpty. Operand 330182 states and 340562 transitions. [2022-12-13 14:00:26,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1556 [2022-12-13 14:00:26,390 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:00:26,390 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:00:26,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 14:00:26,390 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:00:26,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:00:26,391 INFO L85 PathProgramCache]: Analyzing trace with hash -181054803, now seen corresponding path program 1 times [2022-12-13 14:00:26,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:00:26,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292310128] [2022-12-13 14:00:26,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:00:26,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:00:26,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:00:27,663 INFO L134 CoverageAnalysis]: Checked inductivity of 3513 backedges. 2050 proven. 0 refuted. 0 times theorem prover too weak. 1463 trivial. 0 not checked. [2022-12-13 14:00:27,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:00:27,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292310128] [2022-12-13 14:00:27,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292310128] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:00:27,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:00:27,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 14:00:27,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898799394] [2022-12-13 14:00:27,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:00:27,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:00:27,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:00:27,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:00:27,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:00:27,665 INFO L87 Difference]: Start difference. First operand 330182 states and 340562 transitions. Second operand has 3 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 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) [2022-12-13 14:00:31,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:00:31,877 INFO L93 Difference]: Finished difference Result 648560 states and 669182 transitions. [2022-12-13 14:00:31,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:00:31,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 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 1555 [2022-12-13 14:00:31,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:00:32,260 INFO L225 Difference]: With dead ends: 648560 [2022-12-13 14:00:32,260 INFO L226 Difference]: Without dead ends: 321528 [2022-12-13 14:00:32,347 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 [2022-12-13 14:00:32,347 INFO L413 NwaCegarLoop]: 1645 mSDtfsCounter, 718 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 2344 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 1769 SdHoareTripleChecker+Invalid, 2452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-12-13 14:00:32,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [718 Valid, 1769 Invalid, 2452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2344 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-12-13 14:00:32,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321528 states. [2022-12-13 14:00:35,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321528 to 317588. [2022-12-13 14:00:35,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317588 states, 317587 states have (on average 1.0307065465525982) internal successors, (327339), 317587 states have internal predecessors, (327339), 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) [2022-12-13 14:00:36,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317588 states to 317588 states and 327339 transitions. [2022-12-13 14:00:36,315 INFO L78 Accepts]: Start accepts. Automaton has 317588 states and 327339 transitions. Word has length 1555 [2022-12-13 14:00:36,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:00:36,315 INFO L495 AbstractCegarLoop]: Abstraction has 317588 states and 327339 transitions. [2022-12-13 14:00:36,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 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) [2022-12-13 14:00:36,315 INFO L276 IsEmpty]: Start isEmpty. Operand 317588 states and 327339 transitions. [2022-12-13 14:00:36,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1591 [2022-12-13 14:00:36,505 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:00:36,506 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 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] [2022-12-13 14:00:36,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-13 14:00:36,506 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:00:36,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:00:36,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1992413932, now seen corresponding path program 1 times [2022-12-13 14:00:36,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:00:36,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379600026] [2022-12-13 14:00:36,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:00:36,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:00:36,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:00:38,291 INFO L134 CoverageAnalysis]: Checked inductivity of 3368 backedges. 1501 proven. 0 refuted. 0 times theorem prover too weak. 1867 trivial. 0 not checked. [2022-12-13 14:00:38,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:00:38,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379600026] [2022-12-13 14:00:38,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379600026] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:00:38,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:00:38,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 14:00:38,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373536903] [2022-12-13 14:00:38,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:00:38,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:00:38,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:00:38,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:00:38,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:00:38,293 INFO L87 Difference]: Start difference. First operand 317588 states and 327339 transitions. Second operand has 4 states, 4 states have (on average 201.5) internal successors, (806), 4 states have internal predecessors, (806), 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) [2022-12-13 14:00:45,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:00:45,958 INFO L93 Difference]: Finished difference Result 666645 states and 687435 transitions. [2022-12-13 14:00:45,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 14:00:45,959 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 201.5) internal successors, (806), 4 states have internal predecessors, (806), 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 1590 [2022-12-13 14:00:45,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:00:46,368 INFO L225 Difference]: With dead ends: 666645 [2022-12-13 14:00:46,368 INFO L226 Difference]: Without dead ends: 364803 [2022-12-13 14:00:46,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:00:46,599 INFO L413 NwaCegarLoop]: 1475 mSDtfsCounter, 1479 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 6587 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1479 SdHoareTripleChecker+Valid, 1752 SdHoareTripleChecker+Invalid, 7358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 6587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-12-13 14:00:46,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1479 Valid, 1752 Invalid, 7358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [771 Valid, 6587 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-12-13 14:00:46,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364803 states. [2022-12-13 14:00:49,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364803 to 341166. [2022-12-13 14:00:50,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341166 states, 341165 states have (on average 1.026652792636994) internal successors, (350258), 341165 states have internal predecessors, (350258), 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) [2022-12-13 14:00:50,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341166 states to 341166 states and 350258 transitions. [2022-12-13 14:00:50,576 INFO L78 Accepts]: Start accepts. Automaton has 341166 states and 350258 transitions. Word has length 1590 [2022-12-13 14:00:50,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:00:50,577 INFO L495 AbstractCegarLoop]: Abstraction has 341166 states and 350258 transitions. [2022-12-13 14:00:50,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 201.5) internal successors, (806), 4 states have internal predecessors, (806), 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) [2022-12-13 14:00:50,577 INFO L276 IsEmpty]: Start isEmpty. Operand 341166 states and 350258 transitions. [2022-12-13 14:00:50,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1624 [2022-12-13 14:00:50,776 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:00:50,776 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:00:50,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 14:00:50,777 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:00:50,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:00:50,777 INFO L85 PathProgramCache]: Analyzing trace with hash -446292577, now seen corresponding path program 1 times [2022-12-13 14:00:50,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:00:50,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529306598] [2022-12-13 14:00:50,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:00:50,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:00:50,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:00:52,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 1375 proven. 200 refuted. 0 times theorem prover too weak. 587 trivial. 0 not checked. [2022-12-13 14:00:52,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:00:52,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529306598] [2022-12-13 14:00:52,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529306598] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:00:52,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753397029] [2022-12-13 14:00:52,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:00:52,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:00:52,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:00:52,264 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:00:52,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 14:00:52,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:00:52,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 1870 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 14:00:52,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:00:52,857 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 894 proven. 0 refuted. 0 times theorem prover too weak. 1268 trivial. 0 not checked. [2022-12-13 14:00:52,857 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:00:52,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753397029] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:00:52,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:00:52,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-12-13 14:00:52,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801233615] [2022-12-13 14:00:52,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:00:52,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:00:52,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:00:52,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:00:52,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 14:00:52,859 INFO L87 Difference]: Start difference. First operand 341166 states and 350258 transitions. Second operand has 4 states, 4 states have (on average 217.25) internal successors, (869), 3 states have internal predecessors, (869), 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) [2022-12-13 14:01:01,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:01:01,320 INFO L93 Difference]: Finished difference Result 698157 states and 716753 transitions. [2022-12-13 14:01:01,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 14:01:01,320 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 217.25) internal successors, (869), 3 states have internal predecessors, (869), 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 1623 [2022-12-13 14:01:01,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:01:01,770 INFO L225 Difference]: With dead ends: 698157 [2022-12-13 14:01:01,770 INFO L226 Difference]: Without dead ends: 368800 [2022-12-13 14:01:02,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1625 GetRequests, 1621 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 14:01:02,043 INFO L413 NwaCegarLoop]: 522 mSDtfsCounter, 1604 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 5599 mSolverCounterSat, 589 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1604 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 6188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 589 IncrementalHoareTripleChecker+Valid, 5599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-12-13 14:01:02,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1604 Valid, 719 Invalid, 6188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [589 Valid, 5599 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-12-13 14:01:02,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368800 states. [2022-12-13 14:01:05,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368800 to 352186. [2022-12-13 14:01:05,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352186 states, 352185 states have (on average 1.0264860797592175) internal successors, (361513), 352185 states have internal predecessors, (361513), 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) [2022-12-13 14:01:05,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352186 states to 352186 states and 361513 transitions. [2022-12-13 14:01:05,895 INFO L78 Accepts]: Start accepts. Automaton has 352186 states and 361513 transitions. Word has length 1623 [2022-12-13 14:01:05,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:01:05,895 INFO L495 AbstractCegarLoop]: Abstraction has 352186 states and 361513 transitions. [2022-12-13 14:01:05,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 217.25) internal successors, (869), 3 states have internal predecessors, (869), 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) [2022-12-13 14:01:05,895 INFO L276 IsEmpty]: Start isEmpty. Operand 352186 states and 361513 transitions. [2022-12-13 14:01:06,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1908 [2022-12-13 14:01:06,104 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:01:06,105 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:01:06,111 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 14:01:06,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:01:06,307 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:01:06,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:01:06,308 INFO L85 PathProgramCache]: Analyzing trace with hash 860059607, now seen corresponding path program 1 times [2022-12-13 14:01:06,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:01:06,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787375698] [2022-12-13 14:01:06,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:01:06,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:01:06,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:08,246 INFO L134 CoverageAnalysis]: Checked inductivity of 2827 backedges. 1756 proven. 201 refuted. 0 times theorem prover too weak. 870 trivial. 0 not checked. [2022-12-13 14:01:08,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:01:08,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787375698] [2022-12-13 14:01:08,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787375698] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:01:08,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467382230] [2022-12-13 14:01:08,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:01:08,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:01:08,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:01:08,248 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:01:08,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 14:01:08,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:08,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 2161 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 14:01:08,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:01:09,239 INFO L134 CoverageAnalysis]: Checked inductivity of 2827 backedges. 1559 proven. 0 refuted. 0 times theorem prover too weak. 1268 trivial. 0 not checked. [2022-12-13 14:01:09,239 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:01:09,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467382230] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:01:09,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:01:09,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-12-13 14:01:09,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748580177] [2022-12-13 14:01:09,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:01:09,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:01:09,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:01:09,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:01:09,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 14:01:09,242 INFO L87 Difference]: Start difference. First operand 352186 states and 361513 transitions. Second operand has 4 states, 4 states have (on average 288.25) internal successors, (1153), 3 states have internal predecessors, (1153), 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) [2022-12-13 14:01:17,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:01:17,778 INFO L93 Difference]: Finished difference Result 736756 states and 756498 transitions. [2022-12-13 14:01:17,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 14:01:17,779 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 288.25) internal successors, (1153), 3 states have internal predecessors, (1153), 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 1907 [2022-12-13 14:01:17,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:01:18,329 INFO L225 Difference]: With dead ends: 736756 [2022-12-13 14:01:18,330 INFO L226 Difference]: Without dead ends: 397166 [2022-12-13 14:01:18,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1909 GetRequests, 1905 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 14:01:18,623 INFO L413 NwaCegarLoop]: 594 mSDtfsCounter, 1414 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 4974 mSolverCounterSat, 948 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1414 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 5922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 948 IncrementalHoareTripleChecker+Valid, 4974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-12-13 14:01:18,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1414 Valid, 722 Invalid, 5922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [948 Valid, 4974 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-12-13 14:01:18,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397166 states. [2022-12-13 14:01:22,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397166 to 361631. [2022-12-13 14:01:22,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361631 states, 361630 states have (on average 1.026410972540995) internal successors, (371181), 361630 states have internal predecessors, (371181), 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) [2022-12-13 14:01:22,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361631 states to 361631 states and 371181 transitions. [2022-12-13 14:01:22,698 INFO L78 Accepts]: Start accepts. Automaton has 361631 states and 371181 transitions. Word has length 1907 [2022-12-13 14:01:22,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:01:22,699 INFO L495 AbstractCegarLoop]: Abstraction has 361631 states and 371181 transitions. [2022-12-13 14:01:22,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 288.25) internal successors, (1153), 3 states have internal predecessors, (1153), 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) [2022-12-13 14:01:22,699 INFO L276 IsEmpty]: Start isEmpty. Operand 361631 states and 371181 transitions. [2022-12-13 14:01:22,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1914 [2022-12-13 14:01:22,894 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:01:22,895 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:01:22,901 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 14:01:23,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:01:23,097 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:01:23,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:01:23,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1508016760, now seen corresponding path program 1 times [2022-12-13 14:01:23,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:01:23,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423121331] [2022-12-13 14:01:23,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:01:23,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:01:23,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:24,882 INFO L134 CoverageAnalysis]: Checked inductivity of 3958 backedges. 2868 proven. 0 refuted. 0 times theorem prover too weak. 1090 trivial. 0 not checked. [2022-12-13 14:01:24,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:01:24,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423121331] [2022-12-13 14:01:24,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423121331] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:01:24,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:01:24,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 14:01:24,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482477727] [2022-12-13 14:01:24,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:01:24,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:01:24,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:01:24,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:01:24,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:01:24,885 INFO L87 Difference]: Start difference. First operand 361631 states and 371181 transitions. Second operand has 4 states, 4 states have (on average 330.25) internal successors, (1321), 4 states have internal predecessors, (1321), 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) [2022-12-13 14:01:30,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:01:30,607 INFO L93 Difference]: Finished difference Result 712239 states and 731217 transitions. [2022-12-13 14:01:30,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 14:01:30,608 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 330.25) internal successors, (1321), 4 states have internal predecessors, (1321), 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 1913 [2022-12-13 14:01:30,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:01:31,022 INFO L225 Difference]: With dead ends: 712239 [2022-12-13 14:01:31,023 INFO L226 Difference]: Without dead ends: 363991 [2022-12-13 14:01:31,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:01:31,149 INFO L413 NwaCegarLoop]: 1373 mSDtfsCounter, 1574 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 5299 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1574 SdHoareTripleChecker+Valid, 1614 SdHoareTripleChecker+Invalid, 5504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 5299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-12-13 14:01:31,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1574 Valid, 1614 Invalid, 5504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 5299 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-12-13 14:01:31,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363991 states. [2022-12-13 14:01:34,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363991 to 359268. [2022-12-13 14:01:34,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359268 states, 359267 states have (on average 1.0257162500313137) internal successors, (368506), 359267 states have internal predecessors, (368506), 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) [2022-12-13 14:01:35,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359268 states to 359268 states and 368506 transitions. [2022-12-13 14:01:35,068 INFO L78 Accepts]: Start accepts. Automaton has 359268 states and 368506 transitions. Word has length 1913 [2022-12-13 14:01:35,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:01:35,069 INFO L495 AbstractCegarLoop]: Abstraction has 359268 states and 368506 transitions. [2022-12-13 14:01:35,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 330.25) internal successors, (1321), 4 states have internal predecessors, (1321), 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) [2022-12-13 14:01:35,069 INFO L276 IsEmpty]: Start isEmpty. Operand 359268 states and 368506 transitions. [2022-12-13 14:01:35,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2000 [2022-12-13 14:01:35,484 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:01:35,485 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:01:35,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-13 14:01:35,485 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:01:35,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:01:35,486 INFO L85 PathProgramCache]: Analyzing trace with hash -3877790, now seen corresponding path program 1 times [2022-12-13 14:01:35,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:01:35,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689618215] [2022-12-13 14:01:35,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:01:35,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:01:35,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:37,878 INFO L134 CoverageAnalysis]: Checked inductivity of 4450 backedges. 2907 proven. 0 refuted. 0 times theorem prover too weak. 1543 trivial. 0 not checked. [2022-12-13 14:01:37,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:01:37,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689618215] [2022-12-13 14:01:37,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689618215] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:01:37,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:01:37,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 14:01:37,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411400897] [2022-12-13 14:01:37,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:01:37,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:01:37,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:01:37,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:01:37,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:01:37,883 INFO L87 Difference]: Start difference. First operand 359268 states and 368506 transitions. Second operand has 4 states, 4 states have (on average 313.5) internal successors, (1254), 4 states have internal predecessors, (1254), 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) [2022-12-13 14:01:45,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:01:45,788 INFO L93 Difference]: Finished difference Result 799764 states and 821252 transitions. [2022-12-13 14:01:45,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 14:01:45,789 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 313.5) internal successors, (1254), 4 states have internal predecessors, (1254), 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 1999 [2022-12-13 14:01:45,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:01:46,372 INFO L225 Difference]: With dead ends: 799764 [2022-12-13 14:01:46,372 INFO L226 Difference]: Without dead ends: 453092 [2022-12-13 14:01:46,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:01:46,487 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 1774 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 4966 mSolverCounterSat, 1142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1774 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 6108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1142 IncrementalHoareTripleChecker+Valid, 4966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-12-13 14:01:46,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1774 Valid, 529 Invalid, 6108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1142 Valid, 4966 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-12-13 14:01:46,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453092 states. [2022-12-13 14:01:50,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453092 to 420734. [2022-12-13 14:01:51,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420734 states, 420733 states have (on average 1.027311858114291) internal successors, (432224), 420733 states have internal predecessors, (432224), 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) [2022-12-13 14:01:51,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420734 states to 420734 states and 432224 transitions. [2022-12-13 14:01:51,791 INFO L78 Accepts]: Start accepts. Automaton has 420734 states and 432224 transitions. Word has length 1999 [2022-12-13 14:01:51,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:01:51,792 INFO L495 AbstractCegarLoop]: Abstraction has 420734 states and 432224 transitions. [2022-12-13 14:01:51,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 313.5) internal successors, (1254), 4 states have internal predecessors, (1254), 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) [2022-12-13 14:01:51,792 INFO L276 IsEmpty]: Start isEmpty. Operand 420734 states and 432224 transitions. [2022-12-13 14:01:52,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2116 [2022-12-13 14:01:52,020 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:01:52,021 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:01:52,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-12-13 14:01:52,021 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:01:52,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:01:52,021 INFO L85 PathProgramCache]: Analyzing trace with hash 16832126, now seen corresponding path program 1 times [2022-12-13 14:01:52,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:01:52,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119308279] [2022-12-13 14:01:52,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:01:52,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:01:52,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:56,320 INFO L134 CoverageAnalysis]: Checked inductivity of 3697 backedges. 1258 proven. 1339 refuted. 0 times theorem prover too weak. 1100 trivial. 0 not checked. [2022-12-13 14:01:56,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:01:56,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119308279] [2022-12-13 14:01:56,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119308279] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:01:56,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011871015] [2022-12-13 14:01:56,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:01:56,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:01:56,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:01:56,322 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:01:56,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 14:01:56,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:56,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 2384 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 14:01:56,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:01:56,996 INFO L134 CoverageAnalysis]: Checked inductivity of 3697 backedges. 1542 proven. 0 refuted. 0 times theorem prover too weak. 2155 trivial. 0 not checked. [2022-12-13 14:01:56,996 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:01:56,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011871015] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:01:56,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:01:56,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-12-13 14:01:56,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778315455] [2022-12-13 14:01:56,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:01:56,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:01:56,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:01:56,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:01:56,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-13 14:01:56,999 INFO L87 Difference]: Start difference. First operand 420734 states and 432224 transitions. Second operand has 3 states, 3 states have (on average 353.3333333333333) internal successors, (1060), 3 states have internal predecessors, (1060), 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) [2022-12-13 14:02:02,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:02:02,238 INFO L93 Difference]: Finished difference Result 817043 states and 839550 transitions. [2022-12-13 14:02:02,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:02:02,238 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 353.3333333333333) internal successors, (1060), 3 states have internal predecessors, (1060), 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 2115 [2022-12-13 14:02:02,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:02:02,791 INFO L225 Difference]: With dead ends: 817043 [2022-12-13 14:02:02,791 INFO L226 Difference]: Without dead ends: 412055 [2022-12-13 14:02:02,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2121 GetRequests, 2115 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-13 14:02:02,957 INFO L413 NwaCegarLoop]: 1601 mSDtfsCounter, 530 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 2305 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 1759 SdHoareTripleChecker+Invalid, 2494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 2305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:02:02,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [530 Valid, 1759 Invalid, 2494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 2305 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-12-13 14:02:03,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412055 states. [2022-12-13 14:02:06,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412055 to 402599. [2022-12-13 14:02:06,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402599 states, 402598 states have (on average 1.0255589943318149) internal successors, (412888), 402598 states have internal predecessors, (412888), 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) [2022-12-13 14:02:07,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402599 states to 402599 states and 412888 transitions. [2022-12-13 14:02:07,433 INFO L78 Accepts]: Start accepts. Automaton has 402599 states and 412888 transitions. Word has length 2115 [2022-12-13 14:02:07,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:02:07,434 INFO L495 AbstractCegarLoop]: Abstraction has 402599 states and 412888 transitions. [2022-12-13 14:02:07,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 353.3333333333333) internal successors, (1060), 3 states have internal predecessors, (1060), 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) [2022-12-13 14:02:07,435 INFO L276 IsEmpty]: Start isEmpty. Operand 402599 states and 412888 transitions. [2022-12-13 14:02:07,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2186 [2022-12-13 14:02:07,678 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:02:07,678 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:02:07,685 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 14:02:07,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f95ebb3-2a0c-4592-851b-60b5b4d1c8d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:02:07,880 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:02:07,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:02:07,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1750452036, now seen corresponding path program 1 times [2022-12-13 14:02:07,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:02:07,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208912021] [2022-12-13 14:02:07,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:02:07,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:02:08,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:02:10,556 INFO L134 CoverageAnalysis]: Checked inductivity of 4861 backedges. 3111 proven. 0 refuted. 0 times theorem prover too weak. 1750 trivial. 0 not checked. [2022-12-13 14:02:10,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:02:10,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208912021] [2022-12-13 14:02:10,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208912021] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:02:10,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:02:10,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 14:02:10,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932058369] [2022-12-13 14:02:10,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:02:10,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:02:10,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:02:10,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:02:10,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:02:10,558 INFO L87 Difference]: Start difference. First operand 402599 states and 412888 transitions. Second operand has 4 states, 4 states have (on average 327.25) internal successors, (1309), 4 states have internal predecessors, (1309), 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) [2022-12-13 14:02:18,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:02:18,816 INFO L93 Difference]: Finished difference Result 886381 states and 909505 transitions. [2022-12-13 14:02:18,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 14:02:18,817 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 327.25) internal successors, (1309), 4 states have internal predecessors, (1309), 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 2185 [2022-12-13 14:02:18,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:02:20,111 INFO L225 Difference]: With dead ends: 886381 [2022-12-13 14:02:20,112 INFO L226 Difference]: Without dead ends: 494018 [2022-12-13 14:02:20,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:02:20,175 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 1748 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 4757 mSolverCounterSat, 1218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1748 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 5975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1218 IncrementalHoareTripleChecker+Valid, 4757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-12-13 14:02:20,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1748 Valid, 511 Invalid, 5975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1218 Valid, 4757 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-12-13 14:02:20,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494018 states. [2022-12-13 14:02:24,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494018 to 402600. [2022-12-13 14:02:24,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402600 states, 402599 states have (on average 1.025454608680101) internal successors, (412847), 402599 states have internal predecessors, (412847), 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) [2022-12-13 14:02:25,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402600 states to 402600 states and 412847 transitions. [2022-12-13 14:02:25,537 INFO L78 Accepts]: Start accepts. Automaton has 402600 states and 412847 transitions. Word has length 2185 [2022-12-13 14:02:25,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:02:25,538 INFO L495 AbstractCegarLoop]: Abstraction has 402600 states and 412847 transitions. [2022-12-13 14:02:25,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 327.25) internal successors, (1309), 4 states have internal predecessors, (1309), 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) [2022-12-13 14:02:25,538 INFO L276 IsEmpty]: Start isEmpty. Operand 402600 states and 412847 transitions. [2022-12-13 14:02:25,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2246 [2022-12-13 14:02:25,795 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:02:25,795 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:02:25,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-13 14:02:25,796 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:02:25,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:02:25,796 INFO L85 PathProgramCache]: Analyzing trace with hash -503439468, now seen corresponding path program 1 times [2022-12-13 14:02:25,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:02:25,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414795496] [2022-12-13 14:02:25,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:02:25,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:02:26,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:02:27,197 INFO L134 CoverageAnalysis]: Checked inductivity of 5400 backedges. 3051 proven. 0 refuted. 0 times theorem prover too weak. 2349 trivial. 0 not checked. [2022-12-13 14:02:27,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:02:27,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414795496] [2022-12-13 14:02:27,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414795496] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:02:27,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:02:27,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 14:02:27,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86911362] [2022-12-13 14:02:27,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:02:27,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:02:27,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:02:27,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:02:27,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:02:27,199 INFO L87 Difference]: Start difference. First operand 402600 states and 412847 transitions. Second operand has 3 states, 3 states have (on average 438.6666666666667) internal successors, (1316), 3 states have internal predecessors, (1316), 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) [2022-12-13 14:02:31,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:02:31,588 INFO L93 Difference]: Finished difference Result 784726 states and 804940 transitions. [2022-12-13 14:02:31,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:02:31,589 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 438.6666666666667) internal successors, (1316), 3 states have internal predecessors, (1316), 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 2245 [2022-12-13 14:02:31,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:02:32,232 INFO L225 Difference]: With dead ends: 784726 [2022-12-13 14:02:32,233 INFO L226 Difference]: Without dead ends: 397872 [2022-12-13 14:02:32,307 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 [2022-12-13 14:02:32,307 INFO L413 NwaCegarLoop]: 1314 mSDtfsCounter, 429 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 2205 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 1382 SdHoareTripleChecker+Invalid, 2386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 2205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-12-13 14:02:32,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 1382 Invalid, 2386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 2205 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-12-13 14:02:32,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397872 states. [2022-12-13 14:02:36,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397872 to 397868. [2022-12-13 14:02:36,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397868 states, 397867 states have (on average 1.0254632829563648) internal successors, (407998), 397867 states have internal predecessors, (407998), 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) [2022-12-13 14:02:36,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397868 states to 397868 states and 407998 transitions. [2022-12-13 14:02:36,758 INFO L78 Accepts]: Start accepts. Automaton has 397868 states and 407998 transitions. Word has length 2245 [2022-12-13 14:02:36,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:02:36,760 INFO L495 AbstractCegarLoop]: Abstraction has 397868 states and 407998 transitions. [2022-12-13 14:02:36,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 438.6666666666667) internal successors, (1316), 3 states have internal predecessors, (1316), 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) [2022-12-13 14:02:36,760 INFO L276 IsEmpty]: Start isEmpty. Operand 397868 states and 407998 transitions. [2022-12-13 14:02:37,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2310 [2022-12-13 14:02:37,243 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:02:37,244 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:02:37,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-12-13 14:02:37,244 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:02:37,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:02:37,245 INFO L85 PathProgramCache]: Analyzing trace with hash 600835590, now seen corresponding path program 1 times [2022-12-13 14:02:37,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:02:37,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943726135] [2022-12-13 14:02:37,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:02:37,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:02:37,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat