./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem17_label01.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_d6c151d8-6056-4641-8947-7597134bc8ee/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c151d8-6056-4641-8947-7597134bc8ee/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_d6c151d8-6056-4641-8947-7597134bc8ee/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c151d8-6056-4641-8947-7597134bc8ee/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem17_label01.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c151d8-6056-4641-8947-7597134bc8ee/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_d6c151d8-6056-4641-8947-7597134bc8ee/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 a4e6e263a6fe01660f2ecabfa1a654296517a773a2b8a9b458da8809aa3aafd8 --- 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 17:05:19,770 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 17:05:19,772 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 17:05:19,791 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 17:05:19,791 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 17:05:19,792 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 17:05:19,793 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 17:05:19,794 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 17:05:19,796 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 17:05:19,797 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 17:05:19,798 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 17:05:19,798 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 17:05:19,799 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 17:05:19,800 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 17:05:19,801 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 17:05:19,802 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 17:05:19,802 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 17:05:19,803 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 17:05:19,805 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 17:05:19,806 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 17:05:19,807 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 17:05:19,809 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 17:05:19,810 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 17:05:19,810 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 17:05:19,813 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 17:05:19,814 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 17:05:19,814 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 17:05:19,815 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 17:05:19,815 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 17:05:19,816 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 17:05:19,816 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 17:05:19,817 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 17:05:19,818 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 17:05:19,818 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 17:05:19,819 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 17:05:19,819 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 17:05:19,820 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 17:05:19,820 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 17:05:19,820 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 17:05:19,821 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 17:05:19,821 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 17:05:19,822 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c151d8-6056-4641-8947-7597134bc8ee/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 17:05:19,843 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 17:05:19,843 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 17:05:19,843 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 17:05:19,843 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 17:05:19,844 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 17:05:19,844 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 17:05:19,845 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 17:05:19,845 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 17:05:19,845 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 17:05:19,845 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 17:05:19,846 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 17:05:19,846 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 17:05:19,846 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 17:05:19,846 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 17:05:19,846 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 17:05:19,846 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 17:05:19,847 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 17:05:19,847 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 17:05:19,847 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 17:05:19,847 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 17:05:19,847 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 17:05:19,847 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 17:05:19,848 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 17:05:19,848 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 17:05:19,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:05:19,848 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 17:05:19,848 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 17:05:19,848 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 17:05:19,849 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 17:05:19,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 17:05:19,849 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 17:05:19,849 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 17:05:19,849 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 17:05:19,849 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 17:05:19,849 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 17:05:19,850 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_d6c151d8-6056-4641-8947-7597134bc8ee/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c151d8-6056-4641-8947-7597134bc8ee/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a4e6e263a6fe01660f2ecabfa1a654296517a773a2b8a9b458da8809aa3aafd8 [2022-12-13 17:05:20,049 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 17:05:20,067 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 17:05:20,070 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 17:05:20,071 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 17:05:20,071 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 17:05:20,073 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c151d8-6056-4641-8947-7597134bc8ee/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/eca-rers2012/Problem17_label01.c [2022-12-13 17:05:22,642 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 17:05:22,986 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 17:05:22,986 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c151d8-6056-4641-8947-7597134bc8ee/sv-benchmarks/c/eca-rers2012/Problem17_label01.c [2022-12-13 17:05:23,015 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c151d8-6056-4641-8947-7597134bc8ee/bin/uautomizer-uyxdKDjOR8/data/523fb4c4d/65a2d8a9b8f4469f9347dcf08574f4f6/FLAGdd4887f2a [2022-12-13 17:05:23,028 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c151d8-6056-4641-8947-7597134bc8ee/bin/uautomizer-uyxdKDjOR8/data/523fb4c4d/65a2d8a9b8f4469f9347dcf08574f4f6 [2022-12-13 17:05:23,030 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 17:05:23,032 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 17:05:23,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 17:05:23,033 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 17:05:23,036 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 17:05:23,037 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:05:23" (1/1) ... [2022-12-13 17:05:23,038 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23f6f9a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:05:23, skipping insertion in model container [2022-12-13 17:05:23,038 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:05:23" (1/1) ... [2022-12-13 17:05:23,043 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 17:05:23,115 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 17:05:23,305 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_d6c151d8-6056-4641-8947-7597134bc8ee/sv-benchmarks/c/eca-rers2012/Problem17_label01.c[6877,6890] [2022-12-13 17:05:23,704 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:05:23,714 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 17:05:23,740 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_d6c151d8-6056-4641-8947-7597134bc8ee/sv-benchmarks/c/eca-rers2012/Problem17_label01.c[6877,6890] [2022-12-13 17:05:24,030 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:05:24,048 INFO L208 MainTranslator]: Completed translation [2022-12-13 17:05:24,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:05:24 WrapperNode [2022-12-13 17:05:24,049 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 17:05:24,050 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 17:05:24,050 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 17:05:24,050 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 17:05:24,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:05:24" (1/1) ... [2022-12-13 17:05:24,091 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:05:24" (1/1) ... [2022-12-13 17:05:24,284 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2611 [2022-12-13 17:05:24,284 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 17:05:24,284 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 17:05:24,285 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 17:05:24,285 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 17:05:24,291 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:05:24" (1/1) ... [2022-12-13 17:05:24,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:05:24" (1/1) ... [2022-12-13 17:05:24,322 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:05:24" (1/1) ... [2022-12-13 17:05:24,322 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:05:24" (1/1) ... [2022-12-13 17:05:24,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:05:24" (1/1) ... [2022-12-13 17:05:24,429 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:05:24" (1/1) ... [2022-12-13 17:05:24,456 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:05:24" (1/1) ... [2022-12-13 17:05:24,462 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:05:24" (1/1) ... [2022-12-13 17:05:24,505 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 17:05:24,506 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 17:05:24,506 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 17:05:24,506 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 17:05:24,506 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:05:24" (1/1) ... [2022-12-13 17:05:24,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:05:24,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c151d8-6056-4641-8947-7597134bc8ee/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:05:24,529 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c151d8-6056-4641-8947-7597134bc8ee/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 17:05:24,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c151d8-6056-4641-8947-7597134bc8ee/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 17:05:24,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 17:05:24,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 17:05:24,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 17:05:24,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 17:05:24,647 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 17:05:24,649 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 17:05:27,441 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 17:05:27,454 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 17:05:27,454 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 17:05:27,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:05:27 BoogieIcfgContainer [2022-12-13 17:05:27,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 17:05:27,460 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 17:05:27,460 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 17:05:27,462 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 17:05:27,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 05:05:23" (1/3) ... [2022-12-13 17:05:27,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d041971 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:05:27, skipping insertion in model container [2022-12-13 17:05:27,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:05:24" (2/3) ... [2022-12-13 17:05:27,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d041971 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:05:27, skipping insertion in model container [2022-12-13 17:05:27,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:05:27" (3/3) ... [2022-12-13 17:05:27,465 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label01.c [2022-12-13 17:05:27,481 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 17:05:27,481 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 17:05:27,538 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 17:05:27,544 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;@f777630, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 17:05:27,544 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 17:05:27,550 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 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 17:05:27,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-12-13 17:05:27,557 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:05:27,557 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] [2022-12-13 17:05:27,557 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:05:27,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:05:27,561 INFO L85 PathProgramCache]: Analyzing trace with hash 291089130, now seen corresponding path program 1 times [2022-12-13 17:05:27,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:05:27,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716948616] [2022-12-13 17:05:27,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:27,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:05:27,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:27,857 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 17:05:27,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:05:27,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716948616] [2022-12-13 17:05:27,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716948616] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:05:27,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:05:27,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:05:27,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757264175] [2022-12-13 17:05:27,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:05:27,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:05:27,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:05:27,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:05:27,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:05:27,897 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 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 17:05:30,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:05:30,377 INFO L93 Difference]: Finished difference Result 1644 states and 3029 transitions. [2022-12-13 17:05:30,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:05:30,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2022-12-13 17:05:30,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:05:30,396 INFO L225 Difference]: With dead ends: 1644 [2022-12-13 17:05:30,396 INFO L226 Difference]: Without dead ends: 977 [2022-12-13 17:05:30,401 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 17:05:30,404 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 442 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 1802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-12-13 17:05:30,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 503 Invalid, 1802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-12-13 17:05:30,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2022-12-13 17:05:30,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 971. [2022-12-13 17:05:30,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 970 states have (on average 1.5536082474226804) internal successors, (1507), 970 states have internal predecessors, (1507), 0 states have call successors, (0), 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 17:05:30,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1507 transitions. [2022-12-13 17:05:30,476 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1507 transitions. Word has length 46 [2022-12-13 17:05:30,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:05:30,476 INFO L495 AbstractCegarLoop]: Abstraction has 971 states and 1507 transitions. [2022-12-13 17:05:30,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 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 17:05:30,477 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1507 transitions. [2022-12-13 17:05:30,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-12-13 17:05:30,479 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:05:30,480 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, 1, 1, 1, 1, 1, 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 17:05:30,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 17:05:30,480 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:05:30,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:05:30,481 INFO L85 PathProgramCache]: Analyzing trace with hash 63229666, now seen corresponding path program 1 times [2022-12-13 17:05:30,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:05:30,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859741538] [2022-12-13 17:05:30,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:30,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:05:30,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:30,665 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:05:30,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:05:30,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859741538] [2022-12-13 17:05:30,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859741538] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:05:30,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:05:30,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:05:30,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198870855] [2022-12-13 17:05:30,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:05:30,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:05:30,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:05:30,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:05:30,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:05:30,670 INFO L87 Difference]: Start difference. First operand 971 states and 1507 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 0 states have call successors, (0), 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 17:05:33,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:05:33,054 INFO L93 Difference]: Finished difference Result 2813 states and 4381 transitions. [2022-12-13 17:05:33,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:05:33,055 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2022-12-13 17:05:33,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:05:33,061 INFO L225 Difference]: With dead ends: 2813 [2022-12-13 17:05:33,061 INFO L226 Difference]: Without dead ends: 1844 [2022-12-13 17:05:33,062 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 17:05:33,063 INFO L413 NwaCegarLoop]: 506 mSDtfsCounter, 405 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1381 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 1706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-12-13 17:05:33,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 579 Invalid, 1706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1381 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-12-13 17:05:33,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2022-12-13 17:05:33,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1841. [2022-12-13 17:05:33,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1841 states, 1840 states have (on average 1.35) internal successors, (2484), 1840 states have internal predecessors, (2484), 0 states have call successors, (0), 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 17:05:33,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 2484 transitions. [2022-12-13 17:05:33,088 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 2484 transitions. Word has length 113 [2022-12-13 17:05:33,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:05:33,088 INFO L495 AbstractCegarLoop]: Abstraction has 1841 states and 2484 transitions. [2022-12-13 17:05:33,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 0 states have call successors, (0), 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 17:05:33,088 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 2484 transitions. [2022-12-13 17:05:33,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-12-13 17:05:33,089 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:05:33,089 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:05:33,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 17:05:33,090 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:05:33,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:05:33,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1486088630, now seen corresponding path program 1 times [2022-12-13 17:05:33,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:05:33,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023642445] [2022-12-13 17:05:33,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:33,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:05:33,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:33,351 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:05:33,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:05:33,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023642445] [2022-12-13 17:05:33,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023642445] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:05:33,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:05:33,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:05:33,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950133926] [2022-12-13 17:05:33,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:05:33,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:05:33,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:05:33,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:05:33,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 17:05:33,353 INFO L87 Difference]: Start difference. First operand 1841 states and 2484 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 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 17:05:36,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:05:36,920 INFO L93 Difference]: Finished difference Result 6765 states and 9258 transitions. [2022-12-13 17:05:36,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:05:36,921 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2022-12-13 17:05:36,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:05:36,929 INFO L225 Difference]: With dead ends: 6765 [2022-12-13 17:05:36,930 INFO L226 Difference]: Without dead ends: 4926 [2022-12-13 17:05:36,932 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 17:05:36,932 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 866 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 2789 mSolverCounterSat, 594 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 866 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 3383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 594 IncrementalHoareTripleChecker+Valid, 2789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-12-13 17:05:36,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [866 Valid, 329 Invalid, 3383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [594 Valid, 2789 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-12-13 17:05:36,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4926 states. [2022-12-13 17:05:36,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4926 to 4875. [2022-12-13 17:05:36,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4875 states, 4874 states have (on average 1.286417726713172) internal successors, (6270), 4874 states have internal predecessors, (6270), 0 states have call successors, (0), 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 17:05:37,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4875 states to 4875 states and 6270 transitions. [2022-12-13 17:05:37,001 INFO L78 Accepts]: Start accepts. Automaton has 4875 states and 6270 transitions. Word has length 116 [2022-12-13 17:05:37,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:05:37,001 INFO L495 AbstractCegarLoop]: Abstraction has 4875 states and 6270 transitions. [2022-12-13 17:05:37,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 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 17:05:37,002 INFO L276 IsEmpty]: Start isEmpty. Operand 4875 states and 6270 transitions. [2022-12-13 17:05:37,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-12-13 17:05:37,004 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:05:37,004 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, 2, 2, 2, 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] [2022-12-13 17:05:37,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 17:05:37,004 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:05:37,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:05:37,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1454031604, now seen corresponding path program 1 times [2022-12-13 17:05:37,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:05:37,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320410853] [2022-12-13 17:05:37,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:37,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:05:37,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:37,124 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-12-13 17:05:37,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:05:37,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320410853] [2022-12-13 17:05:37,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320410853] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:05:37,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:05:37,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:05:37,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148076524] [2022-12-13 17:05:37,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:05:37,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:05:37,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:05:37,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:05:37,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:05:37,126 INFO L87 Difference]: Start difference. First operand 4875 states and 6270 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 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 17:05:38,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:05:38,960 INFO L93 Difference]: Finished difference Result 14436 states and 18541 transitions. [2022-12-13 17:05:38,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:05:38,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 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 187 [2022-12-13 17:05:38,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:05:38,973 INFO L225 Difference]: With dead ends: 14436 [2022-12-13 17:05:38,973 INFO L226 Difference]: Without dead ends: 8277 [2022-12-13 17:05:38,977 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 17:05:38,978 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 386 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-13 17:05:38,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 590 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-12-13 17:05:38,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8277 states. [2022-12-13 17:05:39,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8277 to 6147. [2022-12-13 17:05:39,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6147 states, 6146 states have (on average 1.1906931337455255) internal successors, (7318), 6146 states have internal predecessors, (7318), 0 states have call successors, (0), 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 17:05:39,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6147 states to 6147 states and 7318 transitions. [2022-12-13 17:05:39,056 INFO L78 Accepts]: Start accepts. Automaton has 6147 states and 7318 transitions. Word has length 187 [2022-12-13 17:05:39,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:05:39,056 INFO L495 AbstractCegarLoop]: Abstraction has 6147 states and 7318 transitions. [2022-12-13 17:05:39,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 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 17:05:39,056 INFO L276 IsEmpty]: Start isEmpty. Operand 6147 states and 7318 transitions. [2022-12-13 17:05:39,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-12-13 17:05:39,058 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:05:39,058 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, 2, 2, 2, 2, 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] [2022-12-13 17:05:39,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 17:05:39,059 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:05:39,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:05:39,059 INFO L85 PathProgramCache]: Analyzing trace with hash 877442312, now seen corresponding path program 1 times [2022-12-13 17:05:39,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:05:39,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773740573] [2022-12-13 17:05:39,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:39,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:05:39,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:39,231 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-12-13 17:05:39,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:05:39,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773740573] [2022-12-13 17:05:39,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773740573] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:05:39,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:05:39,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:05:39,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334317750] [2022-12-13 17:05:39,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:05:39,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:05:39,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:05:39,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:05:39,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:05:39,234 INFO L87 Difference]: Start difference. First operand 6147 states and 7318 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 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 17:05:41,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:05:41,509 INFO L93 Difference]: Finished difference Result 15692 states and 18897 transitions. [2022-12-13 17:05:41,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:05:41,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 200 [2022-12-13 17:05:41,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:05:41,522 INFO L225 Difference]: With dead ends: 15692 [2022-12-13 17:05:41,522 INFO L226 Difference]: Without dead ends: 9547 [2022-12-13 17:05:41,525 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 17:05:41,526 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 414 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 1592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-12-13 17:05:41,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [414 Valid, 477 Invalid, 1592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 1274 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-12-13 17:05:41,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9547 states. [2022-12-13 17:05:41,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9547 to 6124. [2022-12-13 17:05:41,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6124 states, 6123 states have (on average 1.1894496162012085) internal successors, (7283), 6123 states have internal predecessors, (7283), 0 states have call successors, (0), 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 17:05:41,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6124 states to 6124 states and 7283 transitions. [2022-12-13 17:05:41,598 INFO L78 Accepts]: Start accepts. Automaton has 6124 states and 7283 transitions. Word has length 200 [2022-12-13 17:05:41,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:05:41,598 INFO L495 AbstractCegarLoop]: Abstraction has 6124 states and 7283 transitions. [2022-12-13 17:05:41,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 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 17:05:41,599 INFO L276 IsEmpty]: Start isEmpty. Operand 6124 states and 7283 transitions. [2022-12-13 17:05:41,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-12-13 17:05:41,601 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:05:41,601 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 17:05:41,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 17:05:41,601 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:05:41,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:05:41,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1977830355, now seen corresponding path program 1 times [2022-12-13 17:05:41,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:05:41,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481962808] [2022-12-13 17:05:41,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:41,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:05:41,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:41,865 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 162 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:05:41,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:05:41,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481962808] [2022-12-13 17:05:41,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481962808] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:05:41,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:05:41,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 17:05:41,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005671562] [2022-12-13 17:05:41,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:05:41,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 17:05:41,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:05:41,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 17:05:41,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 17:05:41,868 INFO L87 Difference]: Start difference. First operand 6124 states and 7283 transitions. Second operand has 5 states, 5 states have (on average 41.4) internal successors, (207), 5 states have internal predecessors, (207), 0 states have call successors, (0), 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 17:05:44,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:05:44,438 INFO L93 Difference]: Finished difference Result 16114 states and 19480 transitions. [2022-12-13 17:05:44,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:05:44,438 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.4) internal successors, (207), 5 states have internal predecessors, (207), 0 states have call successors, (0), 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 207 [2022-12-13 17:05:44,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:05:44,453 INFO L225 Difference]: With dead ends: 16114 [2022-12-13 17:05:44,453 INFO L226 Difference]: Without dead ends: 9992 [2022-12-13 17:05:44,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 17:05:44,456 INFO L413 NwaCegarLoop]: 730 mSDtfsCounter, 598 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2336 mSolverCounterSat, 556 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 598 SdHoareTripleChecker+Valid, 863 SdHoareTripleChecker+Invalid, 2892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 556 IncrementalHoareTripleChecker+Valid, 2336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-13 17:05:44,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [598 Valid, 863 Invalid, 2892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [556 Valid, 2336 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-12-13 17:05:44,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9992 states. [2022-12-13 17:05:44,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9992 to 9956. [2022-12-13 17:05:44,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9956 states, 9955 states have (on average 1.171672526368659) internal successors, (11664), 9955 states have internal predecessors, (11664), 0 states have call successors, (0), 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 17:05:44,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9956 states to 9956 states and 11664 transitions. [2022-12-13 17:05:44,549 INFO L78 Accepts]: Start accepts. Automaton has 9956 states and 11664 transitions. Word has length 207 [2022-12-13 17:05:44,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:05:44,550 INFO L495 AbstractCegarLoop]: Abstraction has 9956 states and 11664 transitions. [2022-12-13 17:05:44,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.4) internal successors, (207), 5 states have internal predecessors, (207), 0 states have call successors, (0), 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 17:05:44,550 INFO L276 IsEmpty]: Start isEmpty. Operand 9956 states and 11664 transitions. [2022-12-13 17:05:44,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2022-12-13 17:05:44,553 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:05:44,553 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, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:05:44,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 17:05:44,553 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:05:44,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:05:44,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1969648980, now seen corresponding path program 1 times [2022-12-13 17:05:44,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:05:44,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385772753] [2022-12-13 17:05:44,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:44,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:05:44,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:44,829 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 226 proven. 70 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-12-13 17:05:44,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:05:44,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385772753] [2022-12-13 17:05:44,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385772753] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:05:44,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807032196] [2022-12-13 17:05:44,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:44,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:05:44,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c151d8-6056-4641-8947-7597134bc8ee/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:05:44,831 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c151d8-6056-4641-8947-7597134bc8ee/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:05:44,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c151d8-6056-4641-8947-7597134bc8ee/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 17:05:44,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:44,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 17:05:44,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:05:45,340 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 226 proven. 70 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-12-13 17:05:45,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:05:45,556 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 296 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-12-13 17:05:45,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807032196] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 17:05:45,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 17:05:45,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2022-12-13 17:05:45,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088826619] [2022-12-13 17:05:45,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:05:45,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:05:45,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:05:45,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:05:45,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:05:45,558 INFO L87 Difference]: Start difference. First operand 9956 states and 11664 transitions. Second operand has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 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 17:05:48,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:05:48,922 INFO L93 Difference]: Finished difference Result 30575 states and 36167 transitions. [2022-12-13 17:05:48,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:05:48,923 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 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 270 [2022-12-13 17:05:48,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:05:48,943 INFO L225 Difference]: With dead ends: 30575 [2022-12-13 17:05:48,943 INFO L226 Difference]: Without dead ends: 19763 [2022-12-13 17:05:48,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 535 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:05:48,950 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 1070 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 2242 mSolverCounterSat, 1228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1070 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 3470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1228 IncrementalHoareTripleChecker+Valid, 2242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-12-13 17:05:48,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1070 Valid, 147 Invalid, 3470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1228 Valid, 2242 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-12-13 17:05:48,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19763 states. [2022-12-13 17:05:49,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19763 to 19760. [2022-12-13 17:05:49,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19760 states, 19759 states have (on average 1.1599777316665822) internal successors, (22920), 19759 states have internal predecessors, (22920), 0 states have call successors, (0), 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 17:05:49,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19760 states to 19760 states and 22920 transitions. [2022-12-13 17:05:49,144 INFO L78 Accepts]: Start accepts. Automaton has 19760 states and 22920 transitions. Word has length 270 [2022-12-13 17:05:49,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:05:49,144 INFO L495 AbstractCegarLoop]: Abstraction has 19760 states and 22920 transitions. [2022-12-13 17:05:49,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 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 17:05:49,144 INFO L276 IsEmpty]: Start isEmpty. Operand 19760 states and 22920 transitions. [2022-12-13 17:05:49,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2022-12-13 17:05:49,147 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:05:49,147 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, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:05:49,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c151d8-6056-4641-8947-7597134bc8ee/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 17:05:49,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c151d8-6056-4641-8947-7597134bc8ee/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:05:49,348 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:05:49,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:05:49,348 INFO L85 PathProgramCache]: Analyzing trace with hash -2103078840, now seen corresponding path program 1 times [2022-12-13 17:05:49,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:05:49,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495073102] [2022-12-13 17:05:49,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:49,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:05:49,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:49,511 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 274 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-12-13 17:05:49,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:05:49,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495073102] [2022-12-13 17:05:49,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495073102] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:05:49,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:05:49,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:05:49,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218932072] [2022-12-13 17:05:49,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:05:49,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:05:49,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:05:49,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:05:49,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:05:49,514 INFO L87 Difference]: Start difference. First operand 19760 states and 22920 transitions. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 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 17:05:51,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:05:51,421 INFO L93 Difference]: Finished difference Result 42909 states and 49989 transitions. [2022-12-13 17:05:51,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:05:51,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 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 283 [2022-12-13 17:05:51,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:05:51,450 INFO L225 Difference]: With dead ends: 42909 [2022-12-13 17:05:51,450 INFO L226 Difference]: Without dead ends: 23151 [2022-12-13 17:05:51,459 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 17:05:51,459 INFO L413 NwaCegarLoop]: 826 mSDtfsCounter, 374 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 1237 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 1457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 1237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-13 17:05:51,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 896 Invalid, 1457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 1237 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-12-13 17:05:51,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23151 states. [2022-12-13 17:05:51,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23151 to 22725. [2022-12-13 17:05:51,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22725 states, 22724 states have (on average 1.1456169688435134) internal successors, (26033), 22724 states have internal predecessors, (26033), 0 states have call successors, (0), 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 17:05:51,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22725 states to 22725 states and 26033 transitions. [2022-12-13 17:05:51,691 INFO L78 Accepts]: Start accepts. Automaton has 22725 states and 26033 transitions. Word has length 283 [2022-12-13 17:05:51,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:05:51,691 INFO L495 AbstractCegarLoop]: Abstraction has 22725 states and 26033 transitions. [2022-12-13 17:05:51,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 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 17:05:51,692 INFO L276 IsEmpty]: Start isEmpty. Operand 22725 states and 26033 transitions. [2022-12-13 17:05:51,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2022-12-13 17:05:51,696 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:05:51,697 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, 3, 3, 3, 3, 3, 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] [2022-12-13 17:05:51,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 17:05:51,697 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:05:51,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:05:51,697 INFO L85 PathProgramCache]: Analyzing trace with hash 505503923, now seen corresponding path program 1 times [2022-12-13 17:05:51,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:05:51,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822741182] [2022-12-13 17:05:51,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:51,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:05:51,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:52,064 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 274 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-12-13 17:05:52,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:05:52,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822741182] [2022-12-13 17:05:52,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822741182] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:05:52,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:05:52,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 17:05:52,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505416051] [2022-12-13 17:05:52,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:05:52,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:05:52,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:05:52,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:05:52,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 17:05:52,066 INFO L87 Difference]: Start difference. First operand 22725 states and 26033 transitions. Second operand has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 0 states have call successors, (0), 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 17:05:55,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:05:55,910 INFO L93 Difference]: Finished difference Result 64239 states and 73655 transitions. [2022-12-13 17:05:55,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:05:55,911 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 0 states have call successors, (0), 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 306 [2022-12-13 17:05:55,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:05:55,959 INFO L225 Difference]: With dead ends: 64239 [2022-12-13 17:05:55,959 INFO L226 Difference]: Without dead ends: 38537 [2022-12-13 17:05:55,971 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 17:05:55,972 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 863 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 2909 mSolverCounterSat, 468 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 3377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 468 IncrementalHoareTripleChecker+Valid, 2909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-12-13 17:05:55,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 370 Invalid, 3377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [468 Valid, 2909 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-12-13 17:05:56,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38537 states. [2022-12-13 17:05:56,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38537 to 38056. [2022-12-13 17:05:56,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38056 states, 38055 states have (on average 1.1408750492707922) internal successors, (43416), 38055 states have internal predecessors, (43416), 0 states have call successors, (0), 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 17:05:56,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38056 states to 38056 states and 43416 transitions. [2022-12-13 17:05:56,401 INFO L78 Accepts]: Start accepts. Automaton has 38056 states and 43416 transitions. Word has length 306 [2022-12-13 17:05:56,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:05:56,402 INFO L495 AbstractCegarLoop]: Abstraction has 38056 states and 43416 transitions. [2022-12-13 17:05:56,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 0 states have call successors, (0), 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 17:05:56,402 INFO L276 IsEmpty]: Start isEmpty. Operand 38056 states and 43416 transitions. [2022-12-13 17:05:56,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2022-12-13 17:05:56,406 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:05:56,406 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 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 17:05:56,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 17:05:56,407 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:05:56,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:05:56,407 INFO L85 PathProgramCache]: Analyzing trace with hash 462278318, now seen corresponding path program 1 times [2022-12-13 17:05:56,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:05:56,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198401045] [2022-12-13 17:05:56,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:56,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:05:56,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:56,622 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2022-12-13 17:05:56,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:05:56,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198401045] [2022-12-13 17:05:56,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198401045] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:05:56,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:05:56,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:05:56,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063227707] [2022-12-13 17:05:56,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:05:56,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:05:56,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:05:56,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:05:56,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:05:56,624 INFO L87 Difference]: Start difference. First operand 38056 states and 43416 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 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 17:05:59,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:05:59,044 INFO L93 Difference]: Finished difference Result 91844 states and 104584 transitions. [2022-12-13 17:05:59,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:05:59,045 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 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 318 [2022-12-13 17:05:59,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:05:59,089 INFO L225 Difference]: With dead ends: 91844 [2022-12-13 17:05:59,089 INFO L226 Difference]: Without dead ends: 53358 [2022-12-13 17:05:59,106 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 17:05:59,106 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 424 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 1298 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 1546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 1298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-12-13 17:05:59,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 431 Invalid, 1546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 1298 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-12-13 17:05:59,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53358 states. [2022-12-13 17:05:59,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53358 to 49524. [2022-12-13 17:05:59,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49524 states, 49523 states have (on average 1.1243866486279102) internal successors, (55683), 49523 states have internal predecessors, (55683), 0 states have call successors, (0), 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 17:05:59,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49524 states to 49524 states and 55683 transitions. [2022-12-13 17:05:59,601 INFO L78 Accepts]: Start accepts. Automaton has 49524 states and 55683 transitions. Word has length 318 [2022-12-13 17:05:59,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:05:59,601 INFO L495 AbstractCegarLoop]: Abstraction has 49524 states and 55683 transitions. [2022-12-13 17:05:59,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 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 17:05:59,602 INFO L276 IsEmpty]: Start isEmpty. Operand 49524 states and 55683 transitions. [2022-12-13 17:05:59,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2022-12-13 17:05:59,606 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:05:59,606 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, 3, 3, 3, 3, 3, 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] [2022-12-13 17:05:59,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 17:05:59,606 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:05:59,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:05:59,607 INFO L85 PathProgramCache]: Analyzing trace with hash -948205666, now seen corresponding path program 1 times [2022-12-13 17:05:59,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:05:59,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206793252] [2022-12-13 17:05:59,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:59,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:05:59,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:59,881 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 312 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-12-13 17:05:59,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:05:59,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206793252] [2022-12-13 17:05:59,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206793252] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:05:59,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:05:59,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:05:59,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778229346] [2022-12-13 17:05:59,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:05:59,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:05:59,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:05:59,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:05:59,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:05:59,884 INFO L87 Difference]: Start difference. First operand 49524 states and 55683 transitions. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 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 17:06:02,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:06:02,066 INFO L93 Difference]: Finished difference Result 114397 states and 129047 transitions. [2022-12-13 17:06:02,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:06:02,067 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 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 321 [2022-12-13 17:06:02,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:06:02,122 INFO L225 Difference]: With dead ends: 114397 [2022-12-13 17:06:02,122 INFO L226 Difference]: Without dead ends: 63173 [2022-12-13 17:06:02,142 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 17:06:02,142 INFO L413 NwaCegarLoop]: 745 mSDtfsCounter, 364 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 1475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-12-13 17:06:02,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 816 Invalid, 1475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-12-13 17:06:02,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63173 states. [2022-12-13 17:06:02,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63173 to 61886. [2022-12-13 17:06:02,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61886 states, 61885 states have (on average 1.1074089036115375) internal successors, (68532), 61885 states have internal predecessors, (68532), 0 states have call successors, (0), 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 17:06:02,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61886 states to 61886 states and 68532 transitions. [2022-12-13 17:06:02,892 INFO L78 Accepts]: Start accepts. Automaton has 61886 states and 68532 transitions. Word has length 321 [2022-12-13 17:06:02,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:06:02,892 INFO L495 AbstractCegarLoop]: Abstraction has 61886 states and 68532 transitions. [2022-12-13 17:06:02,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 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 17:06:02,892 INFO L276 IsEmpty]: Start isEmpty. Operand 61886 states and 68532 transitions. [2022-12-13 17:06:02,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2022-12-13 17:06:02,895 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:06:02,895 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, 4, 4, 4, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:06:02,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 17:06:02,895 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:06:02,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:06:02,896 INFO L85 PathProgramCache]: Analyzing trace with hash 932540690, now seen corresponding path program 1 times [2022-12-13 17:06:02,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:06:02,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709144723] [2022-12-13 17:06:02,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:06:02,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:06:02,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:03,159 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 340 proven. 214 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-12-13 17:06:03,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:06:03,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709144723] [2022-12-13 17:06:03,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709144723] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:06:03,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844521760] [2022-12-13 17:06:03,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:06:03,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:06:03,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c151d8-6056-4641-8947-7597134bc8ee/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:06:03,160 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c151d8-6056-4641-8947-7597134bc8ee/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:06:03,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c151d8-6056-4641-8947-7597134bc8ee/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 17:06:03,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:03,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 17:06:03,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:06:03,634 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 367 proven. 73 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2022-12-13 17:06:03,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:06:03,850 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 440 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2022-12-13 17:06:03,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844521760] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 17:06:03,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 17:06:03,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 3] total 6 [2022-12-13 17:06:03,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992127250] [2022-12-13 17:06:03,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:06:03,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:06:03,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:06:03,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:06:03,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:06:03,852 INFO L87 Difference]: Start difference. First operand 61886 states and 68532 transitions. Second operand has 4 states, 4 states have (on average 58.0) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 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 17:06:07,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:06:07,403 INFO L93 Difference]: Finished difference Result 144217 states and 159922 transitions. [2022-12-13 17:06:07,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:06:07,403 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 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 344 [2022-12-13 17:06:07,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:06:07,470 INFO L225 Difference]: With dead ends: 144217 [2022-12-13 17:06:07,471 INFO L226 Difference]: Without dead ends: 82333 [2022-12-13 17:06:07,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 690 GetRequests, 683 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:06:07,499 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 908 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 2318 mSolverCounterSat, 678 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 2996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 678 IncrementalHoareTripleChecker+Valid, 2318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-12-13 17:06:07,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [908 Valid, 174 Invalid, 2996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [678 Valid, 2318 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-12-13 17:06:07,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82333 states. [2022-12-13 17:06:08,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82333 to 77653. [2022-12-13 17:06:08,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77653 states, 77652 states have (on average 1.1105702364394994) internal successors, (86238), 77652 states have internal predecessors, (86238), 0 states have call successors, (0), 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 17:06:08,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77653 states to 77653 states and 86238 transitions. [2022-12-13 17:06:08,499 INFO L78 Accepts]: Start accepts. Automaton has 77653 states and 86238 transitions. Word has length 344 [2022-12-13 17:06:08,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:06:08,499 INFO L495 AbstractCegarLoop]: Abstraction has 77653 states and 86238 transitions. [2022-12-13 17:06:08,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 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 17:06:08,500 INFO L276 IsEmpty]: Start isEmpty. Operand 77653 states and 86238 transitions. [2022-12-13 17:06:08,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2022-12-13 17:06:08,505 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:06:08,505 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, 4, 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, 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] [2022-12-13 17:06:08,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c151d8-6056-4641-8947-7597134bc8ee/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-13 17:06:08,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c151d8-6056-4641-8947-7597134bc8ee/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:06:08,707 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:06:08,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:06:08,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1459095844, now seen corresponding path program 1 times [2022-12-13 17:06:08,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:06:08,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107842481] [2022-12-13 17:06:08,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:06:08,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:06:08,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:09,084 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 386 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2022-12-13 17:06:09,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:06:09,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107842481] [2022-12-13 17:06:09,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107842481] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:06:09,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:06:09,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:06:09,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114042185] [2022-12-13 17:06:09,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:06:09,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:06:09,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:06:09,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:06:09,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:06:09,086 INFO L87 Difference]: Start difference. First operand 77653 states and 86238 transitions. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 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 17:06:11,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:06:11,348 INFO L93 Difference]: Finished difference Result 168920 states and 188110 transitions. [2022-12-13 17:06:11,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:06:11,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 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 374 [2022-12-13 17:06:11,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:06:11,427 INFO L225 Difference]: With dead ends: 168920 [2022-12-13 17:06:11,427 INFO L226 Difference]: Without dead ends: 90417 [2022-12-13 17:06:11,461 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 17:06:11,461 INFO L413 NwaCegarLoop]: 766 mSDtfsCounter, 392 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 1479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-12-13 17:06:11,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 824 Invalid, 1479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [288 Valid, 1191 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-12-13 17:06:11,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90417 states. [2022-12-13 17:06:12,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90417 to 75491. [2022-12-13 17:06:12,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75491 states, 75490 states have (on average 1.1091932706318717) internal successors, (83733), 75490 states have internal predecessors, (83733), 0 states have call successors, (0), 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 17:06:12,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75491 states to 75491 states and 83733 transitions. [2022-12-13 17:06:12,292 INFO L78 Accepts]: Start accepts. Automaton has 75491 states and 83733 transitions. Word has length 374 [2022-12-13 17:06:12,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:06:12,293 INFO L495 AbstractCegarLoop]: Abstraction has 75491 states and 83733 transitions. [2022-12-13 17:06:12,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 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 17:06:12,293 INFO L276 IsEmpty]: Start isEmpty. Operand 75491 states and 83733 transitions. [2022-12-13 17:06:12,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2022-12-13 17:06:12,296 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:06:12,297 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-12-13 17:06:12,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 17:06:12,297 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:06:12,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:06:12,297 INFO L85 PathProgramCache]: Analyzing trace with hash 581192442, now seen corresponding path program 1 times [2022-12-13 17:06:12,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:06:12,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544148114] [2022-12-13 17:06:12,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:06:12,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:06:12,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:12,437 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2022-12-13 17:06:12,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:06:12,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544148114] [2022-12-13 17:06:12,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544148114] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:06:12,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:06:12,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:06:12,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901003059] [2022-12-13 17:06:12,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:06:12,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:06:12,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:06:12,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:06:12,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:06:12,439 INFO L87 Difference]: Start difference. First operand 75491 states and 83733 transitions. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:06:14,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:06:14,730 INFO L93 Difference]: Finished difference Result 156939 states and 174500 transitions. [2022-12-13 17:06:14,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:06:14,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 379 [2022-12-13 17:06:14,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:06:14,802 INFO L225 Difference]: With dead ends: 156939 [2022-12-13 17:06:14,802 INFO L226 Difference]: Without dead ends: 81022 [2022-12-13 17:06:14,837 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 17:06:14,837 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 473 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 1270 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 1538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 1270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:06:14,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 269 Invalid, 1538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 1270 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-12-13 17:06:14,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81022 states. [2022-12-13 17:06:15,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81022 to 78458. [2022-12-13 17:06:15,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78458 states, 78457 states have (on average 1.1072689498706298) internal successors, (86873), 78457 states have internal predecessors, (86873), 0 states have call successors, (0), 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 17:06:15,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78458 states to 78458 states and 86873 transitions. [2022-12-13 17:06:15,902 INFO L78 Accepts]: Start accepts. Automaton has 78458 states and 86873 transitions. Word has length 379 [2022-12-13 17:06:15,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:06:15,902 INFO L495 AbstractCegarLoop]: Abstraction has 78458 states and 86873 transitions. [2022-12-13 17:06:15,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:06:15,903 INFO L276 IsEmpty]: Start isEmpty. Operand 78458 states and 86873 transitions. [2022-12-13 17:06:15,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2022-12-13 17:06:15,909 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:06:15,909 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, 4, 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, 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] [2022-12-13 17:06:15,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 17:06:15,909 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:06:15,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:06:15,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1328470753, now seen corresponding path program 1 times [2022-12-13 17:06:15,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:06:15,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762609493] [2022-12-13 17:06:15,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:06:15,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:06:15,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:16,096 INFO L134 CoverageAnalysis]: Checked inductivity of 636 backedges. 419 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2022-12-13 17:06:16,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:06:16,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762609493] [2022-12-13 17:06:16,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762609493] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:06:16,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:06:16,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:06:16,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176425855] [2022-12-13 17:06:16,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:06:16,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:06:16,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:06:16,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:06:16,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:06:16,098 INFO L87 Difference]: Start difference. First operand 78458 states and 86873 transitions. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 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 17:06:18,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:06:18,627 INFO L93 Difference]: Finished difference Result 167541 states and 185296 transitions. [2022-12-13 17:06:18,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:06:18,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 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 396 [2022-12-13 17:06:18,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:06:18,704 INFO L225 Difference]: With dead ends: 167541 [2022-12-13 17:06:18,704 INFO L226 Difference]: Without dead ends: 88654 [2022-12-13 17:06:18,740 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 17:06:18,740 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 392 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 1194 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 1474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 1194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-12-13 17:06:18,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 331 Invalid, 1474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [280 Valid, 1194 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-12-13 17:06:18,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88654 states. [2022-12-13 17:06:19,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88654 to 83123. [2022-12-13 17:06:19,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83123 states, 83122 states have (on average 1.0984697192079114) internal successors, (91307), 83122 states have internal predecessors, (91307), 0 states have call successors, (0), 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 17:06:19,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83123 states to 83123 states and 91307 transitions. [2022-12-13 17:06:19,622 INFO L78 Accepts]: Start accepts. Automaton has 83123 states and 91307 transitions. Word has length 396 [2022-12-13 17:06:19,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:06:19,623 INFO L495 AbstractCegarLoop]: Abstraction has 83123 states and 91307 transitions. [2022-12-13 17:06:19,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 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 17:06:19,623 INFO L276 IsEmpty]: Start isEmpty. Operand 83123 states and 91307 transitions. [2022-12-13 17:06:19,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2022-12-13 17:06:19,627 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:06:19,627 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, 4, 4, 4, 4, 4, 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, 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 17:06:19,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 17:06:19,628 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:06:19,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:06:19,628 INFO L85 PathProgramCache]: Analyzing trace with hash 419479024, now seen corresponding path program 1 times [2022-12-13 17:06:19,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:06:19,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268551063] [2022-12-13 17:06:19,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:06:19,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:06:19,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:20,172 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 346 proven. 44 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2022-12-13 17:06:20,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:06:20,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268551063] [2022-12-13 17:06:20,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268551063] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:06:20,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784480114] [2022-12-13 17:06:20,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:06:20,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:06:20,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c151d8-6056-4641-8947-7597134bc8ee/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:06:20,173 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c151d8-6056-4641-8947-7597134bc8ee/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:06:20,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c151d8-6056-4641-8947-7597134bc8ee/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 17:06:20,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:20,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 17:06:20,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:06:20,560 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 417 proven. 82 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2022-12-13 17:06:20,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:06:21,244 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 417 proven. 82 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2022-12-13 17:06:21,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784480114] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:06:21,245 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:06:21,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2022-12-13 17:06:21,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17622091] [2022-12-13 17:06:21,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:06:21,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 17:06:21,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:06:21,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 17:06:21,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-12-13 17:06:21,248 INFO L87 Difference]: Start difference. First operand 83123 states and 91307 transitions. Second operand has 9 states, 9 states have (on average 82.33333333333333) internal successors, (741), 9 states have internal predecessors, (741), 0 states have call successors, (0), 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 17:06:32,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:06:32,946 INFO L93 Difference]: Finished difference Result 211381 states and 230946 transitions. [2022-12-13 17:06:32,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 17:06:32,946 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 82.33333333333333) internal successors, (741), 9 states have internal predecessors, (741), 0 states have call successors, (0), 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 426 [2022-12-13 17:06:32,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:06:33,075 INFO L225 Difference]: With dead ends: 211381 [2022-12-13 17:06:33,075 INFO L226 Difference]: Without dead ends: 121877 [2022-12-13 17:06:33,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 872 GetRequests, 856 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2022-12-13 17:06:33,125 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 6633 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 10808 mSolverCounterSat, 1776 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6633 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 12584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1776 IncrementalHoareTripleChecker+Valid, 10808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2022-12-13 17:06:33,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6633 Valid, 403 Invalid, 12584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1776 Valid, 10808 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time] [2022-12-13 17:06:33,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121877 states. [2022-12-13 17:06:34,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121877 to 103084. [2022-12-13 17:06:34,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103084 states, 103083 states have (on average 1.074095631675446) internal successors, (110721), 103083 states have internal predecessors, (110721), 0 states have call successors, (0), 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 17:06:34,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103084 states to 103084 states and 110721 transitions. [2022-12-13 17:06:34,363 INFO L78 Accepts]: Start accepts. Automaton has 103084 states and 110721 transitions. Word has length 426 [2022-12-13 17:06:34,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:06:34,363 INFO L495 AbstractCegarLoop]: Abstraction has 103084 states and 110721 transitions. [2022-12-13 17:06:34,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 82.33333333333333) internal successors, (741), 9 states have internal predecessors, (741), 0 states have call successors, (0), 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 17:06:34,363 INFO L276 IsEmpty]: Start isEmpty. Operand 103084 states and 110721 transitions. [2022-12-13 17:06:34,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2022-12-13 17:06:34,371 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:06:34,371 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:06:34,376 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c151d8-6056-4641-8947-7597134bc8ee/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 17:06:34,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c151d8-6056-4641-8947-7597134bc8ee/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 17:06:34,572 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:06:34,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:06:34,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1624467846, now seen corresponding path program 1 times [2022-12-13 17:06:34,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:06:34,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637466570] [2022-12-13 17:06:34,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:06:34,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:06:34,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:34,969 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 251 proven. 44 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-12-13 17:06:34,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:06:34,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637466570] [2022-12-13 17:06:34,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637466570] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:06:34,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627120802] [2022-12-13 17:06:34,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:06:34,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:06:34,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c151d8-6056-4641-8947-7597134bc8ee/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:06:34,970 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c151d8-6056-4641-8947-7597134bc8ee/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:06:34,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c151d8-6056-4641-8947-7597134bc8ee/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 17:06:35,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:35,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 647 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 17:06:35,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:06:35,713 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 251 proven. 44 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-12-13 17:06:35,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:06:37,456 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 251 proven. 44 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-12-13 17:06:37,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627120802] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:06:37,457 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:06:37,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2022-12-13 17:06:37,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549357478] [2022-12-13 17:06:37,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:06:37,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 17:06:37,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:06:37,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 17:06:37,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:06:37,459 INFO L87 Difference]: Start difference. First operand 103084 states and 110721 transitions. Second operand has 8 states, 8 states have (on average 137.5) internal successors, (1100), 8 states have internal predecessors, (1100), 0 states have call successors, (0), 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 17:06:46,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:06:46,558 INFO L93 Difference]: Finished difference Result 236863 states and 253578 transitions. [2022-12-13 17:06:46,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 17:06:46,559 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 137.5) internal successors, (1100), 8 states have internal predecessors, (1100), 0 states have call successors, (0), 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 504 [2022-12-13 17:06:46,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:06:46,677 INFO L225 Difference]: With dead ends: 236863 [2022-12-13 17:06:46,677 INFO L226 Difference]: Without dead ends: 132931 [2022-12-13 17:06:46,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1014 GetRequests, 1006 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-12-13 17:06:46,707 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 2308 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 7191 mSolverCounterSat, 1139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2308 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 8330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1139 IncrementalHoareTripleChecker+Valid, 7191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-12-13 17:06:46,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2308 Valid, 280 Invalid, 8330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1139 Valid, 7191 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2022-12-13 17:06:46,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132931 states. [2022-12-13 17:06:47,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132931 to 110303. [2022-12-13 17:06:47,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110303 states, 110302 states have (on average 1.0639244981958622) internal successors, (117353), 110302 states have internal predecessors, (117353), 0 states have call successors, (0), 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 17:06:47,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110303 states to 110303 states and 117353 transitions. [2022-12-13 17:06:47,934 INFO L78 Accepts]: Start accepts. Automaton has 110303 states and 117353 transitions. Word has length 504 [2022-12-13 17:06:47,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:06:47,935 INFO L495 AbstractCegarLoop]: Abstraction has 110303 states and 117353 transitions. [2022-12-13 17:06:47,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 137.5) internal successors, (1100), 8 states have internal predecessors, (1100), 0 states have call successors, (0), 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 17:06:47,935 INFO L276 IsEmpty]: Start isEmpty. Operand 110303 states and 117353 transitions. [2022-12-13 17:06:47,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 551 [2022-12-13 17:06:47,944 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:06:47,945 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 17:06:47,949 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c151d8-6056-4641-8947-7597134bc8ee/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 17:06:48,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c151d8-6056-4641-8947-7597134bc8ee/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:06:48,146 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:06:48,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:06:48,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1463212704, now seen corresponding path program 1 times [2022-12-13 17:06:48,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:06:48,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382870349] [2022-12-13 17:06:48,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:06:48,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:06:48,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:48,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 519 proven. 0 refuted. 0 times theorem prover too weak. 554 trivial. 0 not checked. [2022-12-13 17:06:48,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:06:48,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382870349] [2022-12-13 17:06:48,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382870349] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:06:48,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:06:48,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:06:48,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816127609] [2022-12-13 17:06:48,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:06:48,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:06:48,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:06:48,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:06:48,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:06:48,646 INFO L87 Difference]: Start difference. First operand 110303 states and 117353 transitions. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 2 states have internal predecessors, (229), 0 states have call successors, (0), 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 17:06:50,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:06:50,268 INFO L93 Difference]: Finished difference Result 211226 states and 224551 transitions. [2022-12-13 17:06:50,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:06:50,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 2 states have internal predecessors, (229), 0 states have call successors, (0), 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 550 [2022-12-13 17:06:50,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:06:50,370 INFO L225 Difference]: With dead ends: 211226 [2022-12-13 17:06:50,370 INFO L226 Difference]: Without dead ends: 101349 [2022-12-13 17:06:50,418 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 17:06:50,418 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 593 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 593 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:06:50,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [593 Valid, 80 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-13 17:06:50,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101349 states. [2022-12-13 17:06:51,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101349 to 100488. [2022-12-13 17:06:51,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100488 states, 100487 states have (on average 1.0619483117219142) internal successors, (106712), 100487 states have internal predecessors, (106712), 0 states have call successors, (0), 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 17:06:51,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100488 states to 100488 states and 106712 transitions. [2022-12-13 17:06:51,669 INFO L78 Accepts]: Start accepts. Automaton has 100488 states and 106712 transitions. Word has length 550 [2022-12-13 17:06:51,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:06:51,670 INFO L495 AbstractCegarLoop]: Abstraction has 100488 states and 106712 transitions. [2022-12-13 17:06:51,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 2 states have internal predecessors, (229), 0 states have call successors, (0), 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 17:06:51,670 INFO L276 IsEmpty]: Start isEmpty. Operand 100488 states and 106712 transitions. [2022-12-13 17:06:51,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2022-12-13 17:06:51,680 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:06:51,681 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:06:51,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 17:06:51,681 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:06:51,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:06:51,681 INFO L85 PathProgramCache]: Analyzing trace with hash -444298993, now seen corresponding path program 1 times [2022-12-13 17:06:51,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:06:51,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491091059] [2022-12-13 17:06:51,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:06:51,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:06:51,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:51,966 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2022-12-13 17:06:51,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:06:51,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491091059] [2022-12-13 17:06:51,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491091059] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:06:51,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:06:51,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:06:51,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293309976] [2022-12-13 17:06:51,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:06:51,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:06:51,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:06:51,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:06:51,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:06:51,968 INFO L87 Difference]: Start difference. First operand 100488 states and 106712 transitions. Second operand has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 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 17:06:54,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:06:54,108 INFO L93 Difference]: Finished difference Result 196289 states and 208400 transitions. [2022-12-13 17:06:54,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:06:54,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 570 [2022-12-13 17:06:54,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:06:54,191 INFO L225 Difference]: With dead ends: 196289 [2022-12-13 17:06:54,191 INFO L226 Difference]: Without dead ends: 96228 [2022-12-13 17:06:54,228 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 17:06:54,228 INFO L413 NwaCegarLoop]: 631 mSDtfsCounter, 431 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 1249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-12-13 17:06:54,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 679 Invalid, 1249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-12-13 17:06:54,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96228 states. [2022-12-13 17:06:55,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96228 to 91122. [2022-12-13 17:06:55,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91122 states, 91121 states have (on average 1.054784297801824) internal successors, (96113), 91121 states have internal predecessors, (96113), 0 states have call successors, (0), 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 17:06:55,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91122 states to 91122 states and 96113 transitions. [2022-12-13 17:06:55,145 INFO L78 Accepts]: Start accepts. Automaton has 91122 states and 96113 transitions. Word has length 570 [2022-12-13 17:06:55,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:06:55,145 INFO L495 AbstractCegarLoop]: Abstraction has 91122 states and 96113 transitions. [2022-12-13 17:06:55,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 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 17:06:55,146 INFO L276 IsEmpty]: Start isEmpty. Operand 91122 states and 96113 transitions. [2022-12-13 17:06:55,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2022-12-13 17:06:55,156 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:06:55,157 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, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:06:55,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 17:06:55,157 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:06:55,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:06:55,157 INFO L85 PathProgramCache]: Analyzing trace with hash -390321554, now seen corresponding path program 1 times [2022-12-13 17:06:55,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:06:55,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476999421] [2022-12-13 17:06:55,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:06:55,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:06:55,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:55,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1016 backedges. 787 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2022-12-13 17:06:55,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:06:55,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476999421] [2022-12-13 17:06:55,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476999421] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:06:55,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:06:55,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 17:06:55,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034858639] [2022-12-13 17:06:55,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:06:55,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:06:55,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:06:55,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:06:55,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 17:06:55,483 INFO L87 Difference]: Start difference. First operand 91122 states and 96113 transitions. Second operand has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 0 states have call successors, (0), 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 17:06:59,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:06:59,156 INFO L93 Difference]: Finished difference Result 204800 states and 215749 transitions. [2022-12-13 17:06:59,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:06:59,157 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 0 states have call successors, (0), 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 586 [2022-12-13 17:06:59,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:06:59,271 INFO L225 Difference]: With dead ends: 204800 [2022-12-13 17:06:59,271 INFO L226 Difference]: Without dead ends: 114105 [2022-12-13 17:06:59,291 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 17:06:59,292 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 725 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 2340 mSolverCounterSat, 385 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 725 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 2725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 385 IncrementalHoareTripleChecker+Valid, 2340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:06:59,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [725 Valid, 181 Invalid, 2725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [385 Valid, 2340 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-12-13 17:06:59,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114105 states. [2022-12-13 17:07:00,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114105 to 106870. [2022-12-13 17:07:00,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106870 states, 106869 states have (on average 1.0514742348108432) internal successors, (112370), 106869 states have internal predecessors, (112370), 0 states have call successors, (0), 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 17:07:00,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106870 states to 106870 states and 112370 transitions. [2022-12-13 17:07:00,596 INFO L78 Accepts]: Start accepts. Automaton has 106870 states and 112370 transitions. Word has length 586 [2022-12-13 17:07:00,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:07:00,597 INFO L495 AbstractCegarLoop]: Abstraction has 106870 states and 112370 transitions. [2022-12-13 17:07:00,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 0 states have call successors, (0), 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 17:07:00,597 INFO L276 IsEmpty]: Start isEmpty. Operand 106870 states and 112370 transitions. [2022-12-13 17:07:00,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 597 [2022-12-13 17:07:00,610 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:07:00,611 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 17:07:00,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 17:07:00,611 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:07:00,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:07:00,612 INFO L85 PathProgramCache]: Analyzing trace with hash 704300083, now seen corresponding path program 1 times [2022-12-13 17:07:00,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:07:00,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637860505] [2022-12-13 17:07:00,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:07:00,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:07:00,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:07:00,937 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 370 proven. 0 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2022-12-13 17:07:00,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:07:00,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637860505] [2022-12-13 17:07:00,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637860505] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:07:00,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:07:00,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:07:00,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524812943] [2022-12-13 17:07:00,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:07:00,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:07:00,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:07:00,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:07:00,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:07:00,939 INFO L87 Difference]: Start difference. First operand 106870 states and 112370 transitions. Second operand has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 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 17:07:03,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:07:03,187 INFO L93 Difference]: Finished difference Result 212894 states and 223885 transitions. [2022-12-13 17:07:03,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:07:03,188 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 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 596 [2022-12-13 17:07:03,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:07:03,275 INFO L225 Difference]: With dead ends: 212894 [2022-12-13 17:07:03,276 INFO L226 Difference]: Without dead ends: 106451 [2022-12-13 17:07:03,300 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 17:07:03,301 INFO L413 NwaCegarLoop]: 613 mSDtfsCounter, 481 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1100 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 1272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 1100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-12-13 17:07:03,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 645 Invalid, 1272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 1100 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-12-13 17:07:03,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106451 states. [2022-12-13 17:07:04,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106451 to 97094. [2022-12-13 17:07:04,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97094 states, 97093 states have (on average 1.0496225268556951) internal successors, (101911), 97093 states have internal predecessors, (101911), 0 states have call successors, (0), 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 17:07:04,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97094 states to 97094 states and 101911 transitions. [2022-12-13 17:07:04,302 INFO L78 Accepts]: Start accepts. Automaton has 97094 states and 101911 transitions. Word has length 596 [2022-12-13 17:07:04,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:07:04,303 INFO L495 AbstractCegarLoop]: Abstraction has 97094 states and 101911 transitions. [2022-12-13 17:07:04,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 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 17:07:04,303 INFO L276 IsEmpty]: Start isEmpty. Operand 97094 states and 101911 transitions. [2022-12-13 17:07:04,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 614 [2022-12-13 17:07:04,312 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:07:04,312 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, 4, 4, 4, 4, 4, 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, 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] [2022-12-13 17:07:04,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 17:07:04,313 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:07:04,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:07:04,313 INFO L85 PathProgramCache]: Analyzing trace with hash 675298951, now seen corresponding path program 1 times [2022-12-13 17:07:04,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:07:04,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931949654] [2022-12-13 17:07:04,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:07:04,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:07:04,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:07:04,863 INFO L134 CoverageAnalysis]: Checked inductivity of 635 backedges. 390 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-12-13 17:07:04,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:07:04,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931949654] [2022-12-13 17:07:04,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931949654] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:07:04,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:07:04,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 17:07:04,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408668639] [2022-12-13 17:07:04,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:07:04,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:07:04,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:07:04,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:07:04,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 17:07:04,865 INFO L87 Difference]: Start difference. First operand 97094 states and 101911 transitions. Second operand has 4 states, 4 states have (on average 112.75) internal successors, (451), 4 states have internal predecessors, (451), 0 states have call successors, (0), 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 17:07:08,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:07:08,213 INFO L93 Difference]: Finished difference Result 105635 states and 110678 transitions. [2022-12-13 17:07:08,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:07:08,214 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 112.75) internal successors, (451), 4 states have internal predecessors, (451), 0 states have call successors, (0), 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 613 [2022-12-13 17:07:08,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:07:08,299 INFO L225 Difference]: With dead ends: 105635 [2022-12-13 17:07:08,299 INFO L226 Difference]: Without dead ends: 105208 [2022-12-13 17:07:08,313 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 17:07:08,313 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 848 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 2327 mSolverCounterSat, 343 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 2670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 343 IncrementalHoareTripleChecker+Valid, 2327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-12-13 17:07:08,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 106 Invalid, 2670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [343 Valid, 2327 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-12-13 17:07:08,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105208 states. [2022-12-13 17:07:09,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105208 to 97094. [2022-12-13 17:07:09,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97094 states, 97093 states have (on average 1.0494577363970625) internal successors, (101895), 97093 states have internal predecessors, (101895), 0 states have call successors, (0), 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 17:07:09,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97094 states to 97094 states and 101895 transitions. [2022-12-13 17:07:09,362 INFO L78 Accepts]: Start accepts. Automaton has 97094 states and 101895 transitions. Word has length 613 [2022-12-13 17:07:09,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:07:09,362 INFO L495 AbstractCegarLoop]: Abstraction has 97094 states and 101895 transitions. [2022-12-13 17:07:09,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.75) internal successors, (451), 4 states have internal predecessors, (451), 0 states have call successors, (0), 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 17:07:09,363 INFO L276 IsEmpty]: Start isEmpty. Operand 97094 states and 101895 transitions. [2022-12-13 17:07:09,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 652 [2022-12-13 17:07:09,381 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:07:09,381 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 17:07:09,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 17:07:09,382 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:07:09,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:07:09,382 INFO L85 PathProgramCache]: Analyzing trace with hash 417655642, now seen corresponding path program 1 times [2022-12-13 17:07:09,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:07:09,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735869295] [2022-12-13 17:07:09,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:07:09,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:07:09,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:07:09,945 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 624 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-12-13 17:07:09,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:07:09,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735869295] [2022-12-13 17:07:09,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735869295] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:07:09,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:07:09,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 17:07:09,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594585286] [2022-12-13 17:07:09,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:07:09,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:07:09,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:07:09,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:07:09,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 17:07:09,947 INFO L87 Difference]: Start difference. First operand 97094 states and 101895 transitions. Second operand has 4 states, 4 states have (on average 142.5) internal successors, (570), 4 states have internal predecessors, (570), 0 states have call successors, (0), 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 17:07:13,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:07:13,061 INFO L93 Difference]: Finished difference Result 203973 states and 213938 transitions. [2022-12-13 17:07:13,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:07:13,062 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 142.5) internal successors, (570), 4 states have internal predecessors, (570), 0 states have call successors, (0), 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 651 [2022-12-13 17:07:13,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:07:13,169 INFO L225 Difference]: With dead ends: 203973 [2022-12-13 17:07:13,169 INFO L226 Difference]: Without dead ends: 107306 [2022-12-13 17:07:13,204 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 17:07:13,204 INFO L413 NwaCegarLoop]: 604 mSDtfsCounter, 531 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 2809 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 2917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-13 17:07:13,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [531 Valid, 689 Invalid, 2917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2809 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-12-13 17:07:13,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107306 states. [2022-12-13 17:07:14,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107306 to 102200. [2022-12-13 17:07:14,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102200 states, 102199 states have (on average 1.049315551032789) internal successors, (107239), 102199 states have internal predecessors, (107239), 0 states have call successors, (0), 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 17:07:14,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102200 states to 102200 states and 107239 transitions. [2022-12-13 17:07:14,543 INFO L78 Accepts]: Start accepts. Automaton has 102200 states and 107239 transitions. Word has length 651 [2022-12-13 17:07:14,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:07:14,543 INFO L495 AbstractCegarLoop]: Abstraction has 102200 states and 107239 transitions. [2022-12-13 17:07:14,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 142.5) internal successors, (570), 4 states have internal predecessors, (570), 0 states have call successors, (0), 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 17:07:14,544 INFO L276 IsEmpty]: Start isEmpty. Operand 102200 states and 107239 transitions. [2022-12-13 17:07:14,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 654 [2022-12-13 17:07:14,557 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:07:14,557 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:07:14,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 17:07:14,557 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:07:14,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:07:14,558 INFO L85 PathProgramCache]: Analyzing trace with hash 2053892212, now seen corresponding path program 1 times [2022-12-13 17:07:14,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:07:14,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774245255] [2022-12-13 17:07:14,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:07:14,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:07:14,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:07:15,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1120 backedges. 889 proven. 187 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-12-13 17:07:15,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:07:15,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774245255] [2022-12-13 17:07:15,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774245255] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:07:15,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933751866] [2022-12-13 17:07:15,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:07:15,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:07:15,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c151d8-6056-4641-8947-7597134bc8ee/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:07:15,154 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c151d8-6056-4641-8947-7597134bc8ee/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:07:15,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c151d8-6056-4641-8947-7597134bc8ee/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 17:07:15,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:07:15,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 839 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 17:07:15,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:07:15,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1120 backedges. 914 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2022-12-13 17:07:15,641 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:07:15,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933751866] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:07:15,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:07:15,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2022-12-13 17:07:15,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439708688] [2022-12-13 17:07:15,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:07:15,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:07:15,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:07:15,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:07:15,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:07:15,642 INFO L87 Difference]: Start difference. First operand 102200 states and 107239 transitions. Second operand has 4 states, 4 states have (on average 123.25) internal successors, (493), 4 states have internal predecessors, (493), 0 states have call successors, (0), 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 17:07:18,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:07:18,369 INFO L93 Difference]: Finished difference Result 207798 states and 217980 transitions. [2022-12-13 17:07:18,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:07:18,369 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 123.25) internal successors, (493), 4 states have internal predecessors, (493), 0 states have call successors, (0), 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 653 [2022-12-13 17:07:18,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:07:18,463 INFO L225 Difference]: With dead ends: 207798 [2022-12-13 17:07:18,463 INFO L226 Difference]: Without dead ends: 106025 [2022-12-13 17:07:18,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 657 GetRequests, 652 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:07:18,497 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 817 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 2043 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 2200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 2043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:07:18,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [817 Valid, 230 Invalid, 2200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 2043 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-12-13 17:07:18,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106025 states. [2022-12-13 17:07:19,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106025 to 104325. [2022-12-13 17:07:19,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104325 states, 104324 states have (on average 1.0486081822016027) internal successors, (109395), 104324 states have internal predecessors, (109395), 0 states have call successors, (0), 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 17:07:19,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104325 states to 104325 states and 109395 transitions. [2022-12-13 17:07:19,897 INFO L78 Accepts]: Start accepts. Automaton has 104325 states and 109395 transitions. Word has length 653 [2022-12-13 17:07:19,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:07:19,897 INFO L495 AbstractCegarLoop]: Abstraction has 104325 states and 109395 transitions. [2022-12-13 17:07:19,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 123.25) internal successors, (493), 4 states have internal predecessors, (493), 0 states have call successors, (0), 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 17:07:19,897 INFO L276 IsEmpty]: Start isEmpty. Operand 104325 states and 109395 transitions. [2022-12-13 17:07:19,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 665 [2022-12-13 17:07:19,908 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:07:19,908 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:07:19,912 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c151d8-6056-4641-8947-7597134bc8ee/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 17:07:20,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c151d8-6056-4641-8947-7597134bc8ee/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-12-13 17:07:20,110 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:07:20,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:07:20,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1476628743, now seen corresponding path program 1 times [2022-12-13 17:07:20,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:07:20,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224217187] [2022-12-13 17:07:20,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:07:20,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:07:20,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:07:20,497 INFO L134 CoverageAnalysis]: Checked inductivity of 885 backedges. 759 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-12-13 17:07:20,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:07:20,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224217187] [2022-12-13 17:07:20,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224217187] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:07:20,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:07:20,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:07:20,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179730678] [2022-12-13 17:07:20,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:07:20,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:07:20,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:07:20,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:07:20,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:07:20,499 INFO L87 Difference]: Start difference. First operand 104325 states and 109395 transitions. Second operand has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 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 17:07:23,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:07:23,051 INFO L93 Difference]: Finished difference Result 215053 states and 225638 transitions. [2022-12-13 17:07:23,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:07:23,051 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 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 664 [2022-12-13 17:07:23,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:07:23,143 INFO L225 Difference]: With dead ends: 215053 [2022-12-13 17:07:23,143 INFO L226 Difference]: Without dead ends: 110729 [2022-12-13 17:07:23,170 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 17:07:23,170 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 323 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 1163 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 1343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 1163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-12-13 17:07:23,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 229 Invalid, 1343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 1163 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-12-13 17:07:23,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110729 states. [2022-12-13 17:07:24,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110729 to 110720. [2022-12-13 17:07:24,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110720 states, 110719 states have (on average 1.0483837462404826) internal successors, (116076), 110719 states have internal predecessors, (116076), 0 states have call successors, (0), 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 17:07:24,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110720 states to 110720 states and 116076 transitions. [2022-12-13 17:07:24,401 INFO L78 Accepts]: Start accepts. Automaton has 110720 states and 116076 transitions. Word has length 664 [2022-12-13 17:07:24,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:07:24,401 INFO L495 AbstractCegarLoop]: Abstraction has 110720 states and 116076 transitions. [2022-12-13 17:07:24,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 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 17:07:24,402 INFO L276 IsEmpty]: Start isEmpty. Operand 110720 states and 116076 transitions. [2022-12-13 17:07:24,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 675 [2022-12-13 17:07:24,414 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:07:24,414 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-12-13 17:07:24,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 17:07:24,414 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:07:24,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:07:24,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1384015256, now seen corresponding path program 1 times [2022-12-13 17:07:24,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:07:24,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161139022] [2022-12-13 17:07:24,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:07:24,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:07:24,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:07:24,980 INFO L134 CoverageAnalysis]: Checked inductivity of 754 backedges. 465 proven. 0 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2022-12-13 17:07:24,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:07:24,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161139022] [2022-12-13 17:07:24,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161139022] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:07:24,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:07:24,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 17:07:24,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474371605] [2022-12-13 17:07:24,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:07:24,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:07:24,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:07:24,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:07:24,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 17:07:24,983 INFO L87 Difference]: Start difference. First operand 110720 states and 116076 transitions. Second operand has 4 states, 4 states have (on average 117.25) internal successors, (469), 4 states have internal predecessors, (469), 0 states have call successors, (0), 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 17:07:29,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:07:29,050 INFO L93 Difference]: Finished difference Result 238913 states and 250213 transitions. [2022-12-13 17:07:29,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:07:29,051 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 117.25) internal successors, (469), 4 states have internal predecessors, (469), 0 states have call successors, (0), 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 674 [2022-12-13 17:07:29,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:07:29,183 INFO L225 Difference]: With dead ends: 238913 [2022-12-13 17:07:29,184 INFO L226 Difference]: Without dead ends: 126918 [2022-12-13 17:07:29,234 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 17:07:29,234 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 806 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 2341 mSolverCounterSat, 376 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 2717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 376 IncrementalHoareTripleChecker+Valid, 2341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-12-13 17:07:29,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 116 Invalid, 2717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [376 Valid, 2341 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-12-13 17:07:29,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126918 states. [2022-12-13 17:07:30,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126918 to 100924. [2022-12-13 17:07:30,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100924 states, 100923 states have (on average 1.0469169564915828) internal successors, (105658), 100923 states have internal predecessors, (105658), 0 states have call successors, (0), 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 17:07:30,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100924 states to 100924 states and 105658 transitions. [2022-12-13 17:07:30,427 INFO L78 Accepts]: Start accepts. Automaton has 100924 states and 105658 transitions. Word has length 674 [2022-12-13 17:07:30,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:07:30,428 INFO L495 AbstractCegarLoop]: Abstraction has 100924 states and 105658 transitions. [2022-12-13 17:07:30,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.25) internal successors, (469), 4 states have internal predecessors, (469), 0 states have call successors, (0), 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 17:07:30,428 INFO L276 IsEmpty]: Start isEmpty. Operand 100924 states and 105658 transitions. [2022-12-13 17:07:30,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 701 [2022-12-13 17:07:30,442 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:07:30,442 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:07:30,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-13 17:07:30,442 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:07:30,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:07:30,443 INFO L85 PathProgramCache]: Analyzing trace with hash -441955017, now seen corresponding path program 1 times [2022-12-13 17:07:30,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:07:30,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815183202] [2022-12-13 17:07:30,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:07:30,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:07:30,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:07:30,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1259 backedges. 954 proven. 0 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2022-12-13 17:07:30,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:07:30,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815183202] [2022-12-13 17:07:30,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815183202] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:07:30,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:07:30,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 17:07:30,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243525309] [2022-12-13 17:07:30,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:07:30,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 17:07:30,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:07:30,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 17:07:30,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-13 17:07:30,890 INFO L87 Difference]: Start difference. First operand 100924 states and 105658 transitions. Second operand has 5 states, 5 states have (on average 95.8) internal successors, (479), 5 states have internal predecessors, (479), 0 states have call successors, (0), 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 17:07:34,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:07:34,871 INFO L93 Difference]: Finished difference Result 196732 states and 205844 transitions. [2022-12-13 17:07:34,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 17:07:34,872 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 95.8) internal successors, (479), 5 states have internal predecessors, (479), 0 states have call successors, (0), 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 700 [2022-12-13 17:07:34,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:07:34,945 INFO L225 Difference]: With dead ends: 196732 [2022-12-13 17:07:34,945 INFO L226 Difference]: Without dead ends: 96235 [2022-12-13 17:07:34,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-13 17:07:34,967 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 1180 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 3084 mSolverCounterSat, 539 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1180 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 3623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 539 IncrementalHoareTripleChecker+Valid, 3084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-12-13 17:07:34,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1180 Valid, 136 Invalid, 3623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [539 Valid, 3084 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-12-13 17:07:35,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96235 states. [2022-12-13 17:07:35,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96235 to 80467. [2022-12-13 17:07:35,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80467 states, 80466 states have (on average 1.0385255884472946) internal successors, (83566), 80466 states have internal predecessors, (83566), 0 states have call successors, (0), 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 17:07:35,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80467 states to 80467 states and 83566 transitions. [2022-12-13 17:07:35,879 INFO L78 Accepts]: Start accepts. Automaton has 80467 states and 83566 transitions. Word has length 700 [2022-12-13 17:07:35,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:07:35,879 INFO L495 AbstractCegarLoop]: Abstraction has 80467 states and 83566 transitions. [2022-12-13 17:07:35,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 95.8) internal successors, (479), 5 states have internal predecessors, (479), 0 states have call successors, (0), 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 17:07:35,879 INFO L276 IsEmpty]: Start isEmpty. Operand 80467 states and 83566 transitions. [2022-12-13 17:07:35,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 706 [2022-12-13 17:07:35,940 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:07:35,940 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:07:35,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-13 17:07:35,940 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:07:35,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:07:35,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1792652345, now seen corresponding path program 1 times [2022-12-13 17:07:35,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:07:35,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847168748] [2022-12-13 17:07:35,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:07:35,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:07:36,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:07:36,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1185 backedges. 658 proven. 0 refuted. 0 times theorem prover too weak. 527 trivial. 0 not checked. [2022-12-13 17:07:36,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:07:36,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847168748] [2022-12-13 17:07:36,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847168748] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:07:36,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:07:36,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 17:07:36,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036969576] [2022-12-13 17:07:36,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:07:36,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:07:36,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:07:36,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:07:36,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 17:07:36,553 INFO L87 Difference]: Start difference. First operand 80467 states and 83566 transitions. Second operand has 4 states, 4 states have (on average 106.5) internal successors, (426), 4 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:39,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:07:39,470 INFO L93 Difference]: Finished difference Result 166456 states and 172484 transitions. [2022-12-13 17:07:39,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:07:39,471 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 106.5) internal successors, (426), 4 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 705 [2022-12-13 17:07:39,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:07:39,536 INFO L225 Difference]: With dead ends: 166456 [2022-12-13 17:07:39,536 INFO L226 Difference]: Without dead ends: 86416 [2022-12-13 17:07:39,565 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 17:07:39,566 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 686 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 2624 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 2812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 2624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-12-13 17:07:39,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [686 Valid, 255 Invalid, 2812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 2624 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-12-13 17:07:39,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86416 states. [2022-12-13 17:07:40,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86416 to 82154. [2022-12-13 17:07:40,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82154 states, 82153 states have (on average 1.0344114031137024) internal successors, (84980), 82153 states have internal predecessors, (84980), 0 states have call successors, (0), 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 17:07:40,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82154 states to 82154 states and 84980 transitions. [2022-12-13 17:07:40,465 INFO L78 Accepts]: Start accepts. Automaton has 82154 states and 84980 transitions. Word has length 705 [2022-12-13 17:07:40,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:07:40,466 INFO L495 AbstractCegarLoop]: Abstraction has 82154 states and 84980 transitions. [2022-12-13 17:07:40,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.5) internal successors, (426), 4 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:07:40,466 INFO L276 IsEmpty]: Start isEmpty. Operand 82154 states and 84980 transitions. [2022-12-13 17:07:40,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 791 [2022-12-13 17:07:40,482 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:07:40,483 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:07:40,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-13 17:07:40,483 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:07:40,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:07:40,483 INFO L85 PathProgramCache]: Analyzing trace with hash -845711114, now seen corresponding path program 1 times [2022-12-13 17:07:40,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:07:40,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383571869] [2022-12-13 17:07:40,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:07:40,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:07:40,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:07:41,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1259 backedges. 860 proven. 94 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2022-12-13 17:07:41,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:07:41,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383571869] [2022-12-13 17:07:41,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383571869] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:07:41,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307918818] [2022-12-13 17:07:41,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:07:41,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:07:41,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c151d8-6056-4641-8947-7597134bc8ee/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:07:41,199 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c151d8-6056-4641-8947-7597134bc8ee/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:07:41,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c151d8-6056-4641-8947-7597134bc8ee/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 17:07:41,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:07:41,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 974 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 17:07:41,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:07:41,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1259 backedges. 954 proven. 0 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2022-12-13 17:07:41,697 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:07:41,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307918818] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:07:41,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:07:41,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-12-13 17:07:41,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146657301] [2022-12-13 17:07:41,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:07:41,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 17:07:41,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:07:41,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 17:07:41,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:07:41,700 INFO L87 Difference]: Start difference. First operand 82154 states and 84980 transitions. Second operand has 5 states, 5 states have (on average 113.8) internal successors, (569), 5 states have internal predecessors, (569), 0 states have call successors, (0), 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 17:07:44,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:07:44,844 INFO L93 Difference]: Finished difference Result 166443 states and 172146 transitions. [2022-12-13 17:07:44,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 17:07:44,845 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 113.8) internal successors, (569), 5 states have internal predecessors, (569), 0 states have call successors, (0), 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 790 [2022-12-13 17:07:44,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:07:44,911 INFO L225 Difference]: With dead ends: 166443 [2022-12-13 17:07:44,911 INFO L226 Difference]: Without dead ends: 84716 [2022-12-13 17:07:44,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 794 GetRequests, 788 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:07:44,948 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 1381 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 2547 mSolverCounterSat, 378 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1381 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 2925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 378 IncrementalHoareTripleChecker+Valid, 2547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-12-13 17:07:44,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1381 Valid, 105 Invalid, 2925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [378 Valid, 2547 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-12-13 17:07:45,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84716 states. [2022-12-13 17:07:45,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84716 to 82154. [2022-12-13 17:07:45,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82154 states, 82153 states have (on average 1.0343748858836561) internal successors, (84977), 82153 states have internal predecessors, (84977), 0 states have call successors, (0), 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 17:07:45,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82154 states to 82154 states and 84977 transitions. [2022-12-13 17:07:45,817 INFO L78 Accepts]: Start accepts. Automaton has 82154 states and 84977 transitions. Word has length 790 [2022-12-13 17:07:45,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:07:45,818 INFO L495 AbstractCegarLoop]: Abstraction has 82154 states and 84977 transitions. [2022-12-13 17:07:45,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 113.8) internal successors, (569), 5 states have internal predecessors, (569), 0 states have call successors, (0), 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 17:07:45,818 INFO L276 IsEmpty]: Start isEmpty. Operand 82154 states and 84977 transitions. [2022-12-13 17:07:45,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 800 [2022-12-13 17:07:45,835 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:07:45,836 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 17:07:45,840 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c151d8-6056-4641-8947-7597134bc8ee/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 17:07:46,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c151d8-6056-4641-8947-7597134bc8ee/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-12-13 17:07:46,038 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:07:46,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:07:46,039 INFO L85 PathProgramCache]: Analyzing trace with hash 329068471, now seen corresponding path program 1 times [2022-12-13 17:07:46,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:07:46,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713594318] [2022-12-13 17:07:46,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:07:46,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:07:46,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:07:47,279 INFO L134 CoverageAnalysis]: Checked inductivity of 974 backedges. 887 proven. 43 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-12-13 17:07:47,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:07:47,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713594318] [2022-12-13 17:07:47,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713594318] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:07:47,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717670390] [2022-12-13 17:07:47,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:07:47,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:07:47,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c151d8-6056-4641-8947-7597134bc8ee/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:07:47,281 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c151d8-6056-4641-8947-7597134bc8ee/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:07:47,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c151d8-6056-4641-8947-7597134bc8ee/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 17:07:47,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:07:47,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 17:07:47,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:07:49,564 INFO L134 CoverageAnalysis]: Checked inductivity of 974 backedges. 598 proven. 332 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-12-13 17:07:49,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:07:52,159 INFO L134 CoverageAnalysis]: Checked inductivity of 974 backedges. 762 proven. 168 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-12-13 17:07:52,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717670390] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:07:52,159 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:07:52,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2022-12-13 17:07:52,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377149337] [2022-12-13 17:07:52,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:07:52,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 17:07:52,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:07:52,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 17:07:52,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2022-12-13 17:07:52,164 INFO L87 Difference]: Start difference. First operand 82154 states and 84977 transitions. Second operand has 16 states, 16 states have (on average 114.25) internal successors, (1828), 16 states have internal predecessors, (1828), 0 states have call successors, (0), 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 17:08:02,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:08:02,678 INFO L93 Difference]: Finished difference Result 178750 states and 184770 transitions. [2022-12-13 17:08:02,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-13 17:08:02,678 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 114.25) internal successors, (1828), 16 states have internal predecessors, (1828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 799 [2022-12-13 17:08:02,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:08:02,749 INFO L225 Difference]: With dead ends: 178750 [2022-12-13 17:08:02,749 INFO L226 Difference]: Without dead ends: 97023 [2022-12-13 17:08:02,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1635 GetRequests, 1604 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=266, Invalid=790, Unknown=0, NotChecked=0, Total=1056 [2022-12-13 17:08:02,768 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 10031 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 15619 mSolverCounterSat, 556 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10031 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 16175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 556 IncrementalHoareTripleChecker+Valid, 15619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2022-12-13 17:08:02,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10031 Valid, 381 Invalid, 16175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [556 Valid, 15619 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2022-12-13 17:08:02,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97023 states. [2022-12-13 17:08:03,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97023 to 85128. [2022-12-13 17:08:03,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85128 states, 85127 states have (on average 1.0305073595921388) internal successors, (87724), 85127 states have internal predecessors, (87724), 0 states have call successors, (0), 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 17:08:03,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85128 states to 85128 states and 87724 transitions. [2022-12-13 17:08:03,717 INFO L78 Accepts]: Start accepts. Automaton has 85128 states and 87724 transitions. Word has length 799 [2022-12-13 17:08:03,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:08:03,718 INFO L495 AbstractCegarLoop]: Abstraction has 85128 states and 87724 transitions. [2022-12-13 17:08:03,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 114.25) internal successors, (1828), 16 states have internal predecessors, (1828), 0 states have call successors, (0), 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 17:08:03,718 INFO L276 IsEmpty]: Start isEmpty. Operand 85128 states and 87724 transitions. [2022-12-13 17:08:03,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 831 [2022-12-13 17:08:03,741 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:08:03,741 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 17:08:03,746 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c151d8-6056-4641-8947-7597134bc8ee/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 17:08:03,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c151d8-6056-4641-8947-7597134bc8ee/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:08:03,942 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:08:03,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:08:03,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1579543537, now seen corresponding path program 1 times [2022-12-13 17:08:03,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:08:03,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067314673] [2022-12-13 17:08:03,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:08:03,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:08:04,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:08:04,465 INFO L134 CoverageAnalysis]: Checked inductivity of 974 backedges. 848 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-12-13 17:08:04,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:08:04,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067314673] [2022-12-13 17:08:04,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067314673] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:08:04,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:08:04,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:08:04,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304743856] [2022-12-13 17:08:04,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:08:04,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:08:04,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:08:04,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:08:04,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:08:04,467 INFO L87 Difference]: Start difference. First operand 85128 states and 87724 transitions. Second operand has 3 states, 3 states have (on average 235.33333333333334) internal successors, (706), 3 states have internal predecessors, (706), 0 states have call successors, (0), 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 17:08:06,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:08:06,519 INFO L93 Difference]: Finished difference Result 172387 states and 177725 transitions. [2022-12-13 17:08:06,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:08:06,519 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 235.33333333333334) internal successors, (706), 3 states have internal predecessors, (706), 0 states have call successors, (0), 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 830 [2022-12-13 17:08:06,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:08:06,591 INFO L225 Difference]: With dead ends: 172387 [2022-12-13 17:08:06,591 INFO L226 Difference]: Without dead ends: 87686 [2022-12-13 17:08:06,611 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 17:08:06,612 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 314 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 1248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-12-13 17:08:06,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 137 Invalid, 1248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 1075 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-12-13 17:08:06,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87686 states. [2022-12-13 17:08:07,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87686 to 82575. [2022-12-13 17:08:07,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82575 states, 82574 states have (on average 1.029573473490445) internal successors, (85016), 82574 states have internal predecessors, (85016), 0 states have call successors, (0), 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 17:08:07,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82575 states to 82575 states and 85016 transitions. [2022-12-13 17:08:07,508 INFO L78 Accepts]: Start accepts. Automaton has 82575 states and 85016 transitions. Word has length 830 [2022-12-13 17:08:07,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:08:07,509 INFO L495 AbstractCegarLoop]: Abstraction has 82575 states and 85016 transitions. [2022-12-13 17:08:07,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 235.33333333333334) internal successors, (706), 3 states have internal predecessors, (706), 0 states have call successors, (0), 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 17:08:07,509 INFO L276 IsEmpty]: Start isEmpty. Operand 82575 states and 85016 transitions. [2022-12-13 17:08:07,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 872 [2022-12-13 17:08:07,532 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:08:07,533 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, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:08:07,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-13 17:08:07,533 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:08:07,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:08:07,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1708866672, now seen corresponding path program 1 times [2022-12-13 17:08:07,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:08:07,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060258629] [2022-12-13 17:08:07,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:08:07,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:08:07,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:08:08,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1678 backedges. 701 proven. 0 refuted. 0 times theorem prover too weak. 977 trivial. 0 not checked. [2022-12-13 17:08:08,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:08:08,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060258629] [2022-12-13 17:08:08,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060258629] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:08:08,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:08:08,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 17:08:08,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5282068] [2022-12-13 17:08:08,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:08:08,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:08:08,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:08:08,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:08:08,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 17:08:08,103 INFO L87 Difference]: Start difference. First operand 82575 states and 85016 transitions. Second operand has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 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 17:08:11,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:08:11,236 INFO L93 Difference]: Finished difference Result 182168 states and 187394 transitions. [2022-12-13 17:08:11,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:08:11,237 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 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 871 [2022-12-13 17:08:11,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:08:11,322 INFO L225 Difference]: With dead ends: 182168 [2022-12-13 17:08:11,322 INFO L226 Difference]: Without dead ends: 99595 [2022-12-13 17:08:11,344 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 17:08:11,344 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 784 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 2230 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 2471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 2230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-12-13 17:08:11,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [784 Valid, 121 Invalid, 2471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 2230 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-12-13 17:08:11,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99595 states. [2022-12-13 17:08:12,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99595 to 84275. [2022-12-13 17:08:12,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84275 states, 84274 states have (on average 1.029451550893514) internal successors, (86756), 84274 states have internal predecessors, (86756), 0 states have call successors, (0), 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 17:08:12,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84275 states to 84275 states and 86756 transitions. [2022-12-13 17:08:12,307 INFO L78 Accepts]: Start accepts. Automaton has 84275 states and 86756 transitions. Word has length 871 [2022-12-13 17:08:12,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:08:12,308 INFO L495 AbstractCegarLoop]: Abstraction has 84275 states and 86756 transitions. [2022-12-13 17:08:12,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 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 17:08:12,308 INFO L276 IsEmpty]: Start isEmpty. Operand 84275 states and 86756 transitions. [2022-12-13 17:08:12,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 902 [2022-12-13 17:08:12,333 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:08:12,334 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, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-12-13 17:08:12,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-12-13 17:08:12,334 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:08:12,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:08:12,334 INFO L85 PathProgramCache]: Analyzing trace with hash 603122866, now seen corresponding path program 1 times [2022-12-13 17:08:12,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:08:12,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365642605] [2022-12-13 17:08:12,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:08:12,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:08:12,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:08:13,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1857 backedges. 1657 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2022-12-13 17:08:13,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:08:13,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365642605] [2022-12-13 17:08:13,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365642605] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:08:13,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:08:13,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 17:08:13,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839872178] [2022-12-13 17:08:13,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:08:13,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:08:13,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:08:13,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:08:13,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 17:08:13,186 INFO L87 Difference]: Start difference. First operand 84275 states and 86756 transitions. Second operand has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 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 17:08:16,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:08:16,346 INFO L93 Difference]: Finished difference Result 185580 states and 191249 transitions. [2022-12-13 17:08:16,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:08:16,346 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 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 901 [2022-12-13 17:08:16,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:08:16,433 INFO L225 Difference]: With dead ends: 185580 [2022-12-13 17:08:16,434 INFO L226 Difference]: Without dead ends: 101732 [2022-12-13 17:08:16,470 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 17:08:16,471 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 607 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 2126 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 607 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 2405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 2126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-12-13 17:08:16,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [607 Valid, 108 Invalid, 2405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 2126 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-12-13 17:08:16,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101732 states. [2022-12-13 17:08:17,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101732 to 94495. [2022-12-13 17:08:17,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94495 states, 94494 states have (on average 1.0296209283129087) internal successors, (97293), 94494 states have internal predecessors, (97293), 0 states have call successors, (0), 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 17:08:17,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94495 states to 94495 states and 97293 transitions. [2022-12-13 17:08:17,536 INFO L78 Accepts]: Start accepts. Automaton has 94495 states and 97293 transitions. Word has length 901 [2022-12-13 17:08:17,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:08:17,536 INFO L495 AbstractCegarLoop]: Abstraction has 94495 states and 97293 transitions. [2022-12-13 17:08:17,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 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 17:08:17,536 INFO L276 IsEmpty]: Start isEmpty. Operand 94495 states and 97293 transitions. [2022-12-13 17:08:17,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 954 [2022-12-13 17:08:17,564 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:08:17,564 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:08:17,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-12-13 17:08:17,564 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:08:17,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:08:17,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1270478158, now seen corresponding path program 1 times [2022-12-13 17:08:17,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:08:17,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409627068] [2022-12-13 17:08:17,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:08:17,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:08:17,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:08:18,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 802 proven. 0 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2022-12-13 17:08:18,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:08:18,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409627068] [2022-12-13 17:08:18,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409627068] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:08:18,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:08:18,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 17:08:18,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599962597] [2022-12-13 17:08:18,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:08:18,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:08:18,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:08:18,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:08:18,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 17:08:18,221 INFO L87 Difference]: Start difference. First operand 94495 states and 97293 transitions. Second operand has 4 states, 4 states have (on average 172.25) internal successors, (689), 4 states have internal predecessors, (689), 0 states have call successors, (0), 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 17:08:21,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:08:21,340 INFO L93 Difference]: Finished difference Result 198363 states and 204142 transitions. [2022-12-13 17:08:21,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:08:21,341 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 172.25) internal successors, (689), 4 states have internal predecessors, (689), 0 states have call successors, (0), 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 953 [2022-12-13 17:08:21,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:08:21,452 INFO L225 Difference]: With dead ends: 198363 [2022-12-13 17:08:21,452 INFO L226 Difference]: Without dead ends: 103870 [2022-12-13 17:08:21,501 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 17:08:21,501 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 563 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 2171 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 2404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 2171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-13 17:08:21,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [563 Valid, 89 Invalid, 2404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 2171 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-12-13 17:08:21,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103870 states. [2022-12-13 17:08:22,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103870 to 92795. [2022-12-13 17:08:22,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92795 states, 92794 states have (on average 1.0295385477509322) internal successors, (95535), 92794 states have internal predecessors, (95535), 0 states have call successors, (0), 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 17:08:22,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92795 states to 92795 states and 95535 transitions. [2022-12-13 17:08:22,560 INFO L78 Accepts]: Start accepts. Automaton has 92795 states and 95535 transitions. Word has length 953 [2022-12-13 17:08:22,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:08:22,560 INFO L495 AbstractCegarLoop]: Abstraction has 92795 states and 95535 transitions. [2022-12-13 17:08:22,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 172.25) internal successors, (689), 4 states have internal predecessors, (689), 0 states have call successors, (0), 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 17:08:22,560 INFO L276 IsEmpty]: Start isEmpty. Operand 92795 states and 95535 transitions. [2022-12-13 17:08:22,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1066 [2022-12-13 17:08:22,595 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:08:22,595 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:08:22,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-12-13 17:08:22,596 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:08:22,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:08:22,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1659380002, now seen corresponding path program 1 times [2022-12-13 17:08:22,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:08:22,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844651550] [2022-12-13 17:08:22,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:08:22,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:08:22,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:08:23,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2195 backedges. 1330 proven. 94 refuted. 0 times theorem prover too weak. 771 trivial. 0 not checked. [2022-12-13 17:08:23,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:08:23,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844651550] [2022-12-13 17:08:23,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844651550] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:08:23,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028922398] [2022-12-13 17:08:23,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:08:23,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:08:23,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c151d8-6056-4641-8947-7597134bc8ee/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:08:23,570 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c151d8-6056-4641-8947-7597134bc8ee/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:08:23,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c151d8-6056-4641-8947-7597134bc8ee/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 17:08:23,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:08:23,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 1307 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 17:08:23,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:08:24,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2195 backedges. 818 proven. 0 refuted. 0 times theorem prover too weak. 1377 trivial. 0 not checked. [2022-12-13 17:08:24,016 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:08:24,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028922398] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:08:24,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:08:24,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-12-13 17:08:24,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874560346] [2022-12-13 17:08:24,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:08:24,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 17:08:24,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:08:24,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 17:08:24,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:08:24,018 INFO L87 Difference]: Start difference. First operand 92795 states and 95535 transitions. Second operand has 5 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 0 states have call successors, (0), 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 17:08:27,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:08:27,848 INFO L93 Difference]: Finished difference Result 203481 states and 209469 transitions. [2022-12-13 17:08:27,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 17:08:27,850 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 0 states have call successors, (0), 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 1065 [2022-12-13 17:08:27,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:08:27,952 INFO L225 Difference]: With dead ends: 203481 [2022-12-13 17:08:27,953 INFO L226 Difference]: Without dead ends: 110263 [2022-12-13 17:08:27,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1069 GetRequests, 1063 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:08:27,994 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 1208 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 3201 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1208 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 3378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 3201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:08:27,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1208 Valid, 204 Invalid, 3378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 3201 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-12-13 17:08:28,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110263 states. [2022-12-13 17:08:29,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110263 to 97046. [2022-12-13 17:08:29,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97046 states, 97045 states have (on average 1.0300685249111237) internal successors, (99963), 97045 states have internal predecessors, (99963), 0 states have call successors, (0), 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 17:08:29,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97046 states to 97046 states and 99963 transitions. [2022-12-13 17:08:29,194 INFO L78 Accepts]: Start accepts. Automaton has 97046 states and 99963 transitions. Word has length 1065 [2022-12-13 17:08:29,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:08:29,195 INFO L495 AbstractCegarLoop]: Abstraction has 97046 states and 99963 transitions. [2022-12-13 17:08:29,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 0 states have call successors, (0), 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 17:08:29,195 INFO L276 IsEmpty]: Start isEmpty. Operand 97046 states and 99963 transitions. [2022-12-13 17:08:29,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1165 [2022-12-13 17:08:29,244 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:08:29,245 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 17:08:29,250 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c151d8-6056-4641-8947-7597134bc8ee/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 17:08:29,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c151d8-6056-4641-8947-7597134bc8ee/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:08:29,447 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:08:29,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:08:29,448 INFO L85 PathProgramCache]: Analyzing trace with hash 402037623, now seen corresponding path program 1 times [2022-12-13 17:08:29,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:08:29,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954663020] [2022-12-13 17:08:29,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:08:29,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:08:29,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:08:30,988 INFO L134 CoverageAnalysis]: Checked inductivity of 2393 backedges. 1520 proven. 175 refuted. 0 times theorem prover too weak. 698 trivial. 0 not checked. [2022-12-13 17:08:30,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:08:30,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954663020] [2022-12-13 17:08:30,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954663020] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:08:30,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217449512] [2022-12-13 17:08:30,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:08:30,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:08:30,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c151d8-6056-4641-8947-7597134bc8ee/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:08:30,990 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c151d8-6056-4641-8947-7597134bc8ee/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:08:30,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c151d8-6056-4641-8947-7597134bc8ee/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 17:08:31,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:08:31,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 1413 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 17:08:31,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:08:31,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2393 backedges. 1695 proven. 0 refuted. 0 times theorem prover too weak. 698 trivial. 0 not checked. [2022-12-13 17:08:31,556 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:08:31,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217449512] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:08:31,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:08:31,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-12-13 17:08:31,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523821156] [2022-12-13 17:08:31,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:08:31,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:08:31,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:08:31,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:08:31,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:08:31,558 INFO L87 Difference]: Start difference. First operand 97046 states and 99963 transitions. Second operand has 4 states, 4 states have (on average 161.5) internal successors, (646), 4 states have internal predecessors, (646), 0 states have call successors, (0), 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 17:08:33,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:08:33,822 INFO L93 Difference]: Finished difference Result 194515 states and 200350 transitions. [2022-12-13 17:08:33,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:08:33,823 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 161.5) internal successors, (646), 4 states have internal predecessors, (646), 0 states have call successors, (0), 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 1164 [2022-12-13 17:08:33,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:08:33,904 INFO L225 Difference]: With dead ends: 194515 [2022-12-13 17:08:33,904 INFO L226 Difference]: Without dead ends: 97471 [2022-12-13 17:08:33,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1169 GetRequests, 1163 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:08:33,946 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 754 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1981 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 2081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-12-13 17:08:33,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [754 Valid, 169 Invalid, 2081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1981 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-12-13 17:08:34,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97471 states. [2022-12-13 17:08:34,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97471 to 96621. [2022-12-13 17:08:35,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96621 states, 96620 states have (on average 1.0294245497826537) internal successors, (99463), 96620 states have internal predecessors, (99463), 0 states have call successors, (0), 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 17:08:35,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96621 states to 96621 states and 99463 transitions. [2022-12-13 17:08:35,111 INFO L78 Accepts]: Start accepts. Automaton has 96621 states and 99463 transitions. Word has length 1164 [2022-12-13 17:08:35,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:08:35,111 INFO L495 AbstractCegarLoop]: Abstraction has 96621 states and 99463 transitions. [2022-12-13 17:08:35,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 161.5) internal successors, (646), 4 states have internal predecessors, (646), 0 states have call successors, (0), 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 17:08:35,112 INFO L276 IsEmpty]: Start isEmpty. Operand 96621 states and 99463 transitions. [2022-12-13 17:08:35,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1280 [2022-12-13 17:08:35,166 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:08:35,167 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-12-13 17:08:35,172 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c151d8-6056-4641-8947-7597134bc8ee/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 17:08:35,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c151d8-6056-4641-8947-7597134bc8ee/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-12-13 17:08:35,369 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:08:35,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:08:35,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1522338651, now seen corresponding path program 1 times [2022-12-13 17:08:35,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:08:35,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818799655] [2022-12-13 17:08:35,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:08:35,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:08:35,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:08:36,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2284 backedges. 1471 proven. 0 refuted. 0 times theorem prover too weak. 813 trivial. 0 not checked. [2022-12-13 17:08:36,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:08:36,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818799655] [2022-12-13 17:08:36,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818799655] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:08:36,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:08:36,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 17:08:36,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358168746] [2022-12-13 17:08:36,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:08:36,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:08:36,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:08:36,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:08:36,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 17:08:36,487 INFO L87 Difference]: Start difference. First operand 96621 states and 99463 transitions. Second operand has 4 states, 4 states have (on average 184.75) internal successors, (739), 4 states have internal predecessors, (739), 0 states have call successors, (0), 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 17:08:39,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:08:39,201 INFO L93 Difference]: Finished difference Result 188560 states and 194062 transitions. [2022-12-13 17:08:39,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:08:39,202 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 184.75) internal successors, (739), 4 states have internal predecessors, (739), 0 states have call successors, (0), 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 1279 [2022-12-13 17:08:39,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:08:39,273 INFO L225 Difference]: With dead ends: 188560 [2022-12-13 17:08:39,273 INFO L226 Difference]: Without dead ends: 91941 [2022-12-13 17:08:39,303 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 17:08:39,303 INFO L413 NwaCegarLoop]: 627 mSDtfsCounter, 549 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1984 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 2063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:08:39,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [549 Valid, 659 Invalid, 2063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1984 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-12-13 17:08:39,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91941 states. [2022-12-13 17:08:40,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91941 to 88105. [2022-12-13 17:08:40,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88105 states, 88104 states have (on average 1.0280009988195768) internal successors, (90571), 88104 states have internal predecessors, (90571), 0 states have call successors, (0), 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 17:08:40,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88105 states to 88105 states and 90571 transitions. [2022-12-13 17:08:40,311 INFO L78 Accepts]: Start accepts. Automaton has 88105 states and 90571 transitions. Word has length 1279 [2022-12-13 17:08:40,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:08:40,312 INFO L495 AbstractCegarLoop]: Abstraction has 88105 states and 90571 transitions. [2022-12-13 17:08:40,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 184.75) internal successors, (739), 4 states have internal predecessors, (739), 0 states have call successors, (0), 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 17:08:40,312 INFO L276 IsEmpty]: Start isEmpty. Operand 88105 states and 90571 transitions. [2022-12-13 17:08:40,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1300 [2022-12-13 17:08:40,367 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:08:40,367 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, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 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 17:08:40,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-12-13 17:08:40,368 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:08:40,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:08:40,368 INFO L85 PathProgramCache]: Analyzing trace with hash 506492642, now seen corresponding path program 1 times [2022-12-13 17:08:40,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:08:40,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621953008] [2022-12-13 17:08:40,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:08:40,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:08:40,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:08:41,403 INFO L134 CoverageAnalysis]: Checked inductivity of 3187 backedges. 1781 proven. 0 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2022-12-13 17:08:41,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:08:41,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621953008] [2022-12-13 17:08:41,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621953008] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:08:41,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:08:41,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 17:08:41,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909309665] [2022-12-13 17:08:41,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:08:41,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:08:41,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:08:41,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:08:41,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 17:08:41,406 INFO L87 Difference]: Start difference. First operand 88105 states and 90571 transitions. Second operand has 4 states, 4 states have (on average 196.5) internal successors, (786), 4 states have internal predecessors, (786), 0 states have call successors, (0), 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 17:08:44,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:08:44,542 INFO L93 Difference]: Finished difference Result 195364 states and 200653 transitions. [2022-12-13 17:08:44,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:08:44,543 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 196.5) internal successors, (786), 4 states have internal predecessors, (786), 0 states have call successors, (0), 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 1299 [2022-12-13 17:08:44,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:08:44,641 INFO L225 Difference]: With dead ends: 195364 [2022-12-13 17:08:44,641 INFO L226 Difference]: Without dead ends: 107261 [2022-12-13 17:08:44,682 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 17:08:44,682 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 557 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 2052 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 557 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 2385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 2052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-13 17:08:44,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [557 Valid, 86 Invalid, 2385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 2052 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-12-13 17:08:44,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107261 states. [2022-12-13 17:08:45,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107261 to 83858. [2022-12-13 17:08:45,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83858 states, 83857 states have (on average 1.0258416113144997) internal successors, (86024), 83857 states have internal predecessors, (86024), 0 states have call successors, (0), 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 17:08:45,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83858 states to 83858 states and 86024 transitions. [2022-12-13 17:08:45,780 INFO L78 Accepts]: Start accepts. Automaton has 83858 states and 86024 transitions. Word has length 1299 [2022-12-13 17:08:45,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:08:45,781 INFO L495 AbstractCegarLoop]: Abstraction has 83858 states and 86024 transitions. [2022-12-13 17:08:45,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 196.5) internal successors, (786), 4 states have internal predecessors, (786), 0 states have call successors, (0), 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 17:08:45,781 INFO L276 IsEmpty]: Start isEmpty. Operand 83858 states and 86024 transitions. [2022-12-13 17:08:45,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1612 [2022-12-13 17:08:45,848 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:08:45,848 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, 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, 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, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:08:45,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-12-13 17:08:45,848 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:08:45,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:08:45,849 INFO L85 PathProgramCache]: Analyzing trace with hash -2104107315, now seen corresponding path program 1 times [2022-12-13 17:08:45,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:08:45,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060930382] [2022-12-13 17:08:45,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:08:45,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:08:46,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:08:46,917 INFO L134 CoverageAnalysis]: Checked inductivity of 4192 backedges. 2609 proven. 0 refuted. 0 times theorem prover too weak. 1583 trivial. 0 not checked. [2022-12-13 17:08:46,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:08:46,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060930382] [2022-12-13 17:08:46,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060930382] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:08:46,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:08:46,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 17:08:46,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885733956] [2022-12-13 17:08:46,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:08:46,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:08:46,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:08:46,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:08:46,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 17:08:46,919 INFO L87 Difference]: Start difference. First operand 83858 states and 86024 transitions. Second operand has 4 states, 4 states have (on average 171.75) internal successors, (687), 4 states have internal predecessors, (687), 0 states have call successors, (0), 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 17:08:49,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:08:49,892 INFO L93 Difference]: Finished difference Result 171978 states and 176370 transitions. [2022-12-13 17:08:49,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:08:49,892 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 171.75) internal successors, (687), 4 states have internal predecessors, (687), 0 states have call successors, (0), 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 1611 [2022-12-13 17:08:49,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:08:49,962 INFO L225 Difference]: With dead ends: 171978 [2022-12-13 17:08:49,962 INFO L226 Difference]: Without dead ends: 88122 [2022-12-13 17:08:49,993 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 17:08:49,994 INFO L413 NwaCegarLoop]: 550 mSDtfsCounter, 769 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 2537 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 2637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 2537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-12-13 17:08:49,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [769 Valid, 607 Invalid, 2637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 2537 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-12-13 17:08:50,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88122 states. [2022-12-13 17:08:50,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88122 to 83433. [2022-12-13 17:08:50,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83433 states, 83432 states have (on average 1.0255417585578674) internal successors, (85563), 83432 states have internal predecessors, (85563), 0 states have call successors, (0), 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 17:08:51,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83433 states to 83433 states and 85563 transitions. [2022-12-13 17:08:51,077 INFO L78 Accepts]: Start accepts. Automaton has 83433 states and 85563 transitions. Word has length 1611 [2022-12-13 17:08:51,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:08:51,078 INFO L495 AbstractCegarLoop]: Abstraction has 83433 states and 85563 transitions. [2022-12-13 17:08:51,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 171.75) internal successors, (687), 4 states have internal predecessors, (687), 0 states have call successors, (0), 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 17:08:51,078 INFO L276 IsEmpty]: Start isEmpty. Operand 83433 states and 85563 transitions. [2022-12-13 17:08:51,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1638 [2022-12-13 17:08:51,145 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:08:51,146 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, 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 17:08:51,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-12-13 17:08:51,146 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:08:51,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:08:51,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1062661967, now seen corresponding path program 1 times [2022-12-13 17:08:51,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:08:51,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522213929] [2022-12-13 17:08:51,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:08:51,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:08:51,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:08:52,307 INFO L134 CoverageAnalysis]: Checked inductivity of 4013 backedges. 3252 proven. 0 refuted. 0 times theorem prover too weak. 761 trivial. 0 not checked. [2022-12-13 17:08:52,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:08:52,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522213929] [2022-12-13 17:08:52,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522213929] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:08:52,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:08:52,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 17:08:52,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086837515] [2022-12-13 17:08:52,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:08:52,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:08:52,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:08:52,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:08:52,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 17:08:52,309 INFO L87 Difference]: Start difference. First operand 83433 states and 85563 transitions. Second operand has 4 states, 4 states have (on average 281.5) internal successors, (1126), 4 states have internal predecessors, (1126), 0 states have call successors, (0), 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 17:08:54,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:08:54,998 INFO L93 Difference]: Finished difference Result 160046 states and 164177 transitions. [2022-12-13 17:08:54,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:08:54,999 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 281.5) internal successors, (1126), 4 states have internal predecessors, (1126), 0 states have call successors, (0), 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 1637 [2022-12-13 17:08:55,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:08:55,000 INFO L225 Difference]: With dead ends: 160046 [2022-12-13 17:08:55,000 INFO L226 Difference]: Without dead ends: 0 [2022-12-13 17:08:55,035 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 17:08:55,036 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 210 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 1515 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 1681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 1515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-12-13 17:08:55,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 132 Invalid, 1681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 1515 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-12-13 17:08:55,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-13 17:08:55,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-13 17:08:55,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 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 17:08:55,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-13 17:08:55,037 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1637 [2022-12-13 17:08:55,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:08:55,037 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 17:08:55,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 281.5) internal successors, (1126), 4 states have internal predecessors, (1126), 0 states have call successors, (0), 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 17:08:55,037 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-13 17:08:55,037 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-13 17:08:55,039 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-13 17:08:55,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-12-13 17:08:55,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.