./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label08.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_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/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_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label08.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/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_d228008e-39c1-49a8-9564-21a53c7e5027/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 065db717d2cdf97087f1b115414109818504267e957198e710d38901ef11a98a --- 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 16:32:59,985 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 16:32:59,986 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 16:33:00,001 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 16:33:00,001 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 16:33:00,002 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 16:33:00,003 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 16:33:00,004 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 16:33:00,006 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 16:33:00,008 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 16:33:00,009 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 16:33:00,010 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 16:33:00,010 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 16:33:00,011 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 16:33:00,012 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 16:33:00,013 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 16:33:00,014 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 16:33:00,015 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 16:33:00,016 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 16:33:00,018 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 16:33:00,019 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 16:33:00,020 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 16:33:00,021 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 16:33:00,022 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 16:33:00,025 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 16:33:00,025 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 16:33:00,026 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 16:33:00,026 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 16:33:00,027 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 16:33:00,028 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 16:33:00,028 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 16:33:00,029 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 16:33:00,029 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 16:33:00,030 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 16:33:00,031 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 16:33:00,031 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 16:33:00,032 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 16:33:00,032 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 16:33:00,032 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 16:33:00,033 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 16:33:00,034 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 16:33:00,035 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 16:33:00,054 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 16:33:00,054 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 16:33:00,054 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 16:33:00,054 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 16:33:00,055 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 16:33:00,055 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 16:33:00,056 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 16:33:00,056 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 16:33:00,056 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 16:33:00,056 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 16:33:00,056 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 16:33:00,056 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 16:33:00,057 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 16:33:00,057 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 16:33:00,057 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 16:33:00,057 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 16:33:00,057 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 16:33:00,057 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 16:33:00,057 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 16:33:00,058 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 16:33:00,058 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 16:33:00,058 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 16:33:00,058 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 16:33:00,058 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 16:33:00,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:33:00,058 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 16:33:00,059 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 16:33:00,059 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 16:33:00,059 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 16:33:00,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 16:33:00,059 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 16:33:00,059 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 16:33:00,060 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 16:33:00,060 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 16:33:00,060 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 16:33:00,060 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_d228008e-39c1-49a8-9564-21a53c7e5027/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 065db717d2cdf97087f1b115414109818504267e957198e710d38901ef11a98a [2022-12-13 16:33:00,231 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 16:33:00,247 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 16:33:00,248 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 16:33:00,249 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 16:33:00,249 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 16:33:00,250 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label08.c [2022-12-13 16:33:02,851 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 16:33:03,232 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 16:33:03,233 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label08.c [2022-12-13 16:33:03,257 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/data/c3d8d064d/64a59ba73e98472bbcce4fcebe8ed613/FLAGf85f5c529 [2022-12-13 16:33:03,271 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/data/c3d8d064d/64a59ba73e98472bbcce4fcebe8ed613 [2022-12-13 16:33:03,274 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 16:33:03,275 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 16:33:03,276 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 16:33:03,277 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 16:33:03,280 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 16:33:03,281 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:33:03" (1/1) ... [2022-12-13 16:33:03,282 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@337fdae1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:33:03, skipping insertion in model container [2022-12-13 16:33:03,282 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:33:03" (1/1) ... [2022-12-13 16:33:03,289 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 16:33:03,384 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 16:33:03,645 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_d228008e-39c1-49a8-9564-21a53c7e5027/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label08.c[11640,11653] [2022-12-13 16:33:03,679 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_d228008e-39c1-49a8-9564-21a53c7e5027/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label08.c[15147,15160] [2022-12-13 16:33:04,219 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:33:04,227 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 16:33:04,247 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_d228008e-39c1-49a8-9564-21a53c7e5027/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label08.c[11640,11653] [2022-12-13 16:33:04,251 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_d228008e-39c1-49a8-9564-21a53c7e5027/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label08.c[15147,15160] [2022-12-13 16:33:04,599 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:33:04,615 INFO L208 MainTranslator]: Completed translation [2022-12-13 16:33:04,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:33:04 WrapperNode [2022-12-13 16:33:04,616 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 16:33:04,616 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 16:33:04,616 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 16:33:04,617 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 16:33:04,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:33:04" (1/1) ... [2022-12-13 16:33:04,673 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:33:04" (1/1) ... [2022-12-13 16:33:04,898 INFO L138 Inliner]: procedures = 36, calls = 22, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 5070 [2022-12-13 16:33:04,899 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 16:33:04,899 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 16:33:04,899 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 16:33:04,899 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 16:33:04,907 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:33:04" (1/1) ... [2022-12-13 16:33:04,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:33:04" (1/1) ... [2022-12-13 16:33:04,944 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:33:04" (1/1) ... [2022-12-13 16:33:04,945 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:33:04" (1/1) ... [2022-12-13 16:33:05,061 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:33:04" (1/1) ... [2022-12-13 16:33:05,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:33:04" (1/1) ... [2022-12-13 16:33:05,103 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:33:04" (1/1) ... [2022-12-13 16:33:05,110 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:33:04" (1/1) ... [2022-12-13 16:33:05,155 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 16:33:05,156 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 16:33:05,156 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 16:33:05,156 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 16:33:05,156 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:33:04" (1/1) ... [2022-12-13 16:33:05,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:33:05,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:33:05,182 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 16:33:05,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 16:33:05,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 16:33:05,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 16:33:05,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 16:33:05,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 16:33:05,297 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 16:33:05,299 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 16:33:08,790 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 16:33:08,805 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 16:33:08,805 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 16:33:08,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:33:08 BoogieIcfgContainer [2022-12-13 16:33:08,809 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 16:33:08,811 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 16:33:08,812 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 16:33:08,814 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 16:33:08,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 04:33:03" (1/3) ... [2022-12-13 16:33:08,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6595322d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:33:08, skipping insertion in model container [2022-12-13 16:33:08,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:33:04" (2/3) ... [2022-12-13 16:33:08,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6595322d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:33:08, skipping insertion in model container [2022-12-13 16:33:08,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:33:08" (3/3) ... [2022-12-13 16:33:08,817 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label08.c [2022-12-13 16:33:08,834 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 16:33:08,834 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 16:33:08,894 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 16:33:08,899 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;@6465b8f2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 16:33:08,899 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 16:33:08,905 INFO L276 IsEmpty]: Start isEmpty. Operand has 899 states, 896 states have (on average 1.9051339285714286) internal successors, (1707), 898 states have internal predecessors, (1707), 0 states have call successors, (0), 0 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 16:33:08,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-13 16:33:08,910 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:33:08,911 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] [2022-12-13 16:33:08,911 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:33:08,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:33:08,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1798739915, now seen corresponding path program 1 times [2022-12-13 16:33:08,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:33:08,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534667902] [2022-12-13 16:33:08,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:33:08,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:33:09,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:33:09,098 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 16:33:09,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:33:09,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534667902] [2022-12-13 16:33:09,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534667902] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:33:09,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:33:09,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:33:09,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862547789] [2022-12-13 16:33:09,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:33:09,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 16:33:09,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:33:09,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 16:33:09,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 16:33:09,128 INFO L87 Difference]: Start difference. First operand has 899 states, 896 states have (on average 1.9051339285714286) internal successors, (1707), 898 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 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 16:33:09,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:33:09,182 INFO L93 Difference]: Finished difference Result 1761 states and 3344 transitions. [2022-12-13 16:33:09,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 16:33:09,184 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-12-13 16:33:09,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:33:09,195 INFO L225 Difference]: With dead ends: 1761 [2022-12-13 16:33:09,195 INFO L226 Difference]: Without dead ends: 833 [2022-12-13 16:33:09,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 16:33:09,202 INFO L413 NwaCegarLoop]: 1641 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1641 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:33:09,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1641 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:33:09,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2022-12-13 16:33:09,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 833. [2022-12-13 16:33:09,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 831 states have (on average 1.8941034897713598) internal successors, (1574), 832 states have internal predecessors, (1574), 0 states have call successors, (0), 0 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 16:33:09,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1574 transitions. [2022-12-13 16:33:09,256 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1574 transitions. Word has length 24 [2022-12-13 16:33:09,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:33:09,256 INFO L495 AbstractCegarLoop]: Abstraction has 833 states and 1574 transitions. [2022-12-13 16:33:09,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 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 16:33:09,257 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1574 transitions. [2022-12-13 16:33:09,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-13 16:33:09,257 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:33:09,257 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] [2022-12-13 16:33:09,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 16:33:09,258 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:33:09,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:33:09,258 INFO L85 PathProgramCache]: Analyzing trace with hash 502082675, now seen corresponding path program 1 times [2022-12-13 16:33:09,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:33:09,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716238431] [2022-12-13 16:33:09,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:33:09,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:33:09,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:33:09,396 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 16:33:09,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:33:09,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716238431] [2022-12-13 16:33:09,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716238431] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:33:09,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:33:09,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 16:33:09,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734299209] [2022-12-13 16:33:09,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:33:09,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 16:33:09,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:33:09,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 16:33:09,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:33:09,400 INFO L87 Difference]: Start difference. First operand 833 states and 1574 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 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 16:33:09,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:33:09,495 INFO L93 Difference]: Finished difference Result 879 states and 1645 transitions. [2022-12-13 16:33:09,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 16:33:09,495 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-12-13 16:33:09,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:33:09,498 INFO L225 Difference]: With dead ends: 879 [2022-12-13 16:33:09,498 INFO L226 Difference]: Without dead ends: 833 [2022-12-13 16:33:09,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:33:09,499 INFO L413 NwaCegarLoop]: 1572 mSDtfsCounter, 3 mSDsluCounter, 4682 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6254 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:33:09,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6254 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:33:09,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2022-12-13 16:33:09,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 833. [2022-12-13 16:33:09,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 831 states have (on average 1.8567990373044525) internal successors, (1543), 832 states have internal predecessors, (1543), 0 states have call successors, (0), 0 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 16:33:09,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1543 transitions. [2022-12-13 16:33:09,519 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1543 transitions. Word has length 24 [2022-12-13 16:33:09,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:33:09,519 INFO L495 AbstractCegarLoop]: Abstraction has 833 states and 1543 transitions. [2022-12-13 16:33:09,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 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 16:33:09,519 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1543 transitions. [2022-12-13 16:33:09,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-12-13 16:33:09,520 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:33:09,520 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] [2022-12-13 16:33:09,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 16:33:09,520 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:33:09,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:33:09,521 INFO L85 PathProgramCache]: Analyzing trace with hash 206256813, now seen corresponding path program 1 times [2022-12-13 16:33:09,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:33:09,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089072507] [2022-12-13 16:33:09,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:33:09,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:33:09,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:33:09,579 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 16:33:09,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:33:09,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089072507] [2022-12-13 16:33:09,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089072507] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:33:09,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:33:09,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:33:09,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117402386] [2022-12-13 16:33:09,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:33:09,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:33:09,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:33:09,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:33:09,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:33:09,582 INFO L87 Difference]: Start difference. First operand 833 states and 1543 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 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 16:33:12,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:33:12,616 INFO L93 Difference]: Finished difference Result 2337 states and 4416 transitions. [2022-12-13 16:33:12,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:33:12,617 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2022-12-13 16:33:12,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:33:12,623 INFO L225 Difference]: With dead ends: 2337 [2022-12-13 16:33:12,623 INFO L226 Difference]: Without dead ends: 1584 [2022-12-13 16:33:12,624 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 16:33:12,625 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 943 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2377 mSolverCounterSat, 711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 943 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 3088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 2377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-12-13 16:33:12,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [943 Valid, 219 Invalid, 3088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [711 Valid, 2377 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-12-13 16:33:12,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1584 states. [2022-12-13 16:33:12,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1584 to 1584. [2022-12-13 16:33:12,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1584 states, 1582 states have (on average 1.8217446270543616) internal successors, (2882), 1583 states have internal predecessors, (2882), 0 states have call successors, (0), 0 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 16:33:12,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 2882 transitions. [2022-12-13 16:33:12,669 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 2882 transitions. Word has length 30 [2022-12-13 16:33:12,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:33:12,670 INFO L495 AbstractCegarLoop]: Abstraction has 1584 states and 2882 transitions. [2022-12-13 16:33:12,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 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 16:33:12,670 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 2882 transitions. [2022-12-13 16:33:12,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-12-13 16:33:12,671 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:33:12,672 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:33:12,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 16:33:12,672 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:33:12,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:33:12,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1518044022, now seen corresponding path program 1 times [2022-12-13 16:33:12,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:33:12,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338193587] [2022-12-13 16:33:12,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:33:12,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:33:12,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:33:12,842 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 16:33:12,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:33:12,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338193587] [2022-12-13 16:33:12,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338193587] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:33:12,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:33:12,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 16:33:12,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580992488] [2022-12-13 16:33:12,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:33:12,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:33:12,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:33:12,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:33:12,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:33:12,845 INFO L87 Difference]: Start difference. First operand 1584 states and 2882 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 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 16:33:13,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:33:13,055 INFO L93 Difference]: Finished difference Result 2004 states and 3552 transitions. [2022-12-13 16:33:13,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 16:33:13,056 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2022-12-13 16:33:13,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:33:13,061 INFO L225 Difference]: With dead ends: 2004 [2022-12-13 16:33:13,061 INFO L226 Difference]: Without dead ends: 1962 [2022-12-13 16:33:13,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-12-13 16:33:13,064 INFO L413 NwaCegarLoop]: 1539 mSDtfsCounter, 7953 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7953 SdHoareTripleChecker+Valid, 2746 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:33:13,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7953 Valid, 2746 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 16:33:13,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1962 states. [2022-12-13 16:33:13,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1962 to 1624. [2022-12-13 16:33:13,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1624 states, 1622 states have (on average 1.816276202219482) internal successors, (2946), 1623 states have internal predecessors, (2946), 0 states have call successors, (0), 0 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 16:33:13,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1624 states to 1624 states and 2946 transitions. [2022-12-13 16:33:13,103 INFO L78 Accepts]: Start accepts. Automaton has 1624 states and 2946 transitions. Word has length 54 [2022-12-13 16:33:13,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:33:13,103 INFO L495 AbstractCegarLoop]: Abstraction has 1624 states and 2946 transitions. [2022-12-13 16:33:13,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 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 16:33:13,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 2946 transitions. [2022-12-13 16:33:13,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-12-13 16:33:13,106 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:33:13,107 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:33:13,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 16:33:13,107 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:33:13,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:33:13,108 INFO L85 PathProgramCache]: Analyzing trace with hash 32878714, now seen corresponding path program 1 times [2022-12-13 16:33:13,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:33:13,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134117463] [2022-12-13 16:33:13,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:33:13,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:33:13,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:33:13,186 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 16:33:13,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:33:13,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134117463] [2022-12-13 16:33:13,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134117463] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:33:13,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:33:13,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:33:13,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013167740] [2022-12-13 16:33:13,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:33:13,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:33:13,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:33:13,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:33:13,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:33:13,189 INFO L87 Difference]: Start difference. First operand 1624 states and 2946 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 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 16:33:13,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:33:13,232 INFO L93 Difference]: Finished difference Result 1777 states and 3189 transitions. [2022-12-13 16:33:13,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:33:13,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2022-12-13 16:33:13,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:33:13,237 INFO L225 Difference]: With dead ends: 1777 [2022-12-13 16:33:13,238 INFO L226 Difference]: Without dead ends: 1695 [2022-12-13 16:33:13,238 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 16:33:13,239 INFO L413 NwaCegarLoop]: 1541 mSDtfsCounter, 1482 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1603 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:33:13,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1603 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:33:13,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1695 states. [2022-12-13 16:33:13,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1695 to 1693. [2022-12-13 16:33:13,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1693 states, 1691 states have (on average 1.8060319337670019) internal successors, (3054), 1692 states have internal predecessors, (3054), 0 states have call successors, (0), 0 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 16:33:13,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1693 states to 1693 states and 3054 transitions. [2022-12-13 16:33:13,270 INFO L78 Accepts]: Start accepts. Automaton has 1693 states and 3054 transitions. Word has length 56 [2022-12-13 16:33:13,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:33:13,271 INFO L495 AbstractCegarLoop]: Abstraction has 1693 states and 3054 transitions. [2022-12-13 16:33:13,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 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 16:33:13,271 INFO L276 IsEmpty]: Start isEmpty. Operand 1693 states and 3054 transitions. [2022-12-13 16:33:13,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-12-13 16:33:13,273 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:33:13,273 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:33:13,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 16:33:13,273 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:33:13,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:33:13,274 INFO L85 PathProgramCache]: Analyzing trace with hash 99372226, now seen corresponding path program 1 times [2022-12-13 16:33:13,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:33:13,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245300794] [2022-12-13 16:33:13,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:33:13,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:33:13,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:33:13,491 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 16:33:13,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:33:13,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245300794] [2022-12-13 16:33:13,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245300794] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:33:13,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:33:13,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 16:33:13,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761201882] [2022-12-13 16:33:13,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:33:13,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:33:13,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:33:13,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:33:13,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:33:13,493 INFO L87 Difference]: Start difference. First operand 1693 states and 3054 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 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 16:33:13,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:33:13,637 INFO L93 Difference]: Finished difference Result 1846 states and 3294 transitions. [2022-12-13 16:33:13,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 16:33:13,637 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2022-12-13 16:33:13,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:33:13,641 INFO L225 Difference]: With dead ends: 1846 [2022-12-13 16:33:13,642 INFO L226 Difference]: Without dead ends: 1695 [2022-12-13 16:33:13,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-12-13 16:33:13,643 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 2994 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2994 SdHoareTripleChecker+Valid, 1798 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:33:13,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2994 Valid, 1798 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:33:13,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1695 states. [2022-12-13 16:33:13,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1695 to 1693. [2022-12-13 16:33:13,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1693 states, 1691 states have (on average 1.8048492016558249) internal successors, (3052), 1692 states have internal predecessors, (3052), 0 states have call successors, (0), 0 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 16:33:13,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1693 states to 1693 states and 3052 transitions. [2022-12-13 16:33:13,674 INFO L78 Accepts]: Start accepts. Automaton has 1693 states and 3052 transitions. Word has length 56 [2022-12-13 16:33:13,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:33:13,674 INFO L495 AbstractCegarLoop]: Abstraction has 1693 states and 3052 transitions. [2022-12-13 16:33:13,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 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 16:33:13,675 INFO L276 IsEmpty]: Start isEmpty. Operand 1693 states and 3052 transitions. [2022-12-13 16:33:13,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-12-13 16:33:13,676 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:33:13,676 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:33:13,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 16:33:13,676 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:33:13,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:33:13,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1629151369, now seen corresponding path program 1 times [2022-12-13 16:33:13,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:33:13,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017529045] [2022-12-13 16:33:13,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:33:13,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:33:13,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:33:13,888 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 16:33:13,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:33:13,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017529045] [2022-12-13 16:33:13,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017529045] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:33:13,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:33:13,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 16:33:13,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152035309] [2022-12-13 16:33:13,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:33:13,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 16:33:13,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:33:13,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 16:33:13,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:33:13,891 INFO L87 Difference]: Start difference. First operand 1693 states and 3052 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 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 16:33:14,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:33:14,044 INFO L93 Difference]: Finished difference Result 1841 states and 3279 transitions. [2022-12-13 16:33:14,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 16:33:14,044 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2022-12-13 16:33:14,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:33:14,049 INFO L225 Difference]: With dead ends: 1841 [2022-12-13 16:33:14,049 INFO L226 Difference]: Without dead ends: 1839 [2022-12-13 16:33:14,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-12-13 16:33:14,050 INFO L413 NwaCegarLoop]: 1598 mSDtfsCounter, 394 mSDsluCounter, 9035 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 10633 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:33:14,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 10633 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:33:14,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1839 states. [2022-12-13 16:33:14,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1839 to 1699. [2022-12-13 16:33:14,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1699 states, 1697 states have (on average 1.8014142604596346) internal successors, (3057), 1698 states have internal predecessors, (3057), 0 states have call successors, (0), 0 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 16:33:14,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 3057 transitions. [2022-12-13 16:33:14,089 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 3057 transitions. Word has length 57 [2022-12-13 16:33:14,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:33:14,089 INFO L495 AbstractCegarLoop]: Abstraction has 1699 states and 3057 transitions. [2022-12-13 16:33:14,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 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 16:33:14,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 3057 transitions. [2022-12-13 16:33:14,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-12-13 16:33:14,091 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:33:14,091 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:33:14,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 16:33:14,091 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:33:14,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:33:14,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1409361730, now seen corresponding path program 1 times [2022-12-13 16:33:14,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:33:14,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860765894] [2022-12-13 16:33:14,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:33:14,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:33:14,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:33:14,146 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 16:33:14,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:33:14,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860765894] [2022-12-13 16:33:14,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860765894] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:33:14,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:33:14,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:33:14,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089598373] [2022-12-13 16:33:14,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:33:14,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:33:14,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:33:14,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:33:14,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:33:14,148 INFO L87 Difference]: Start difference. First operand 1699 states and 3057 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 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 16:33:14,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:33:14,209 INFO L93 Difference]: Finished difference Result 1869 states and 3318 transitions. [2022-12-13 16:33:14,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:33:14,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-12-13 16:33:14,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:33:14,221 INFO L225 Difference]: With dead ends: 1869 [2022-12-13 16:33:14,222 INFO L226 Difference]: Without dead ends: 1781 [2022-12-13 16:33:14,222 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 16:33:14,223 INFO L413 NwaCegarLoop]: 1595 mSDtfsCounter, 1496 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1663 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:33:14,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 1663 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:33:14,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1781 states. [2022-12-13 16:33:14,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1781 to 1779. [2022-12-13 16:33:14,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1779 states, 1777 states have (on average 1.7884074282498592) internal successors, (3178), 1778 states have internal predecessors, (3178), 0 states have call successors, (0), 0 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 16:33:14,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1779 states to 1779 states and 3178 transitions. [2022-12-13 16:33:14,298 INFO L78 Accepts]: Start accepts. Automaton has 1779 states and 3178 transitions. Word has length 58 [2022-12-13 16:33:14,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:33:14,299 INFO L495 AbstractCegarLoop]: Abstraction has 1779 states and 3178 transitions. [2022-12-13 16:33:14,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 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 16:33:14,299 INFO L276 IsEmpty]: Start isEmpty. Operand 1779 states and 3178 transitions. [2022-12-13 16:33:14,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-12-13 16:33:14,300 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:33:14,300 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:33:14,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 16:33:14,300 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:33:14,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:33:14,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1383487166, now seen corresponding path program 1 times [2022-12-13 16:33:14,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:33:14,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766136992] [2022-12-13 16:33:14,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:33:14,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:33:14,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:33:14,349 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 16:33:14,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:33:14,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766136992] [2022-12-13 16:33:14,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766136992] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:33:14,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:33:14,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:33:14,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70393115] [2022-12-13 16:33:14,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:33:14,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:33:14,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:33:14,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:33:14,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:33:14,351 INFO L87 Difference]: Start difference. First operand 1779 states and 3178 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 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 16:33:14,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:33:14,433 INFO L93 Difference]: Finished difference Result 2225 states and 3858 transitions. [2022-12-13 16:33:14,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:33:14,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-12-13 16:33:14,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:33:14,438 INFO L225 Difference]: With dead ends: 2225 [2022-12-13 16:33:14,438 INFO L226 Difference]: Without dead ends: 1990 [2022-12-13 16:33:14,439 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 16:33:14,440 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 1492 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 1663 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:33:14,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1492 Valid, 1663 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:33:14,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1990 states. [2022-12-13 16:33:14,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1990 to 1988. [2022-12-13 16:33:14,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1988 states, 1986 states have (on average 1.75730110775428) internal successors, (3490), 1987 states have internal predecessors, (3490), 0 states have call successors, (0), 0 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 16:33:14,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1988 states to 1988 states and 3490 transitions. [2022-12-13 16:33:14,543 INFO L78 Accepts]: Start accepts. Automaton has 1988 states and 3490 transitions. Word has length 58 [2022-12-13 16:33:14,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:33:14,543 INFO L495 AbstractCegarLoop]: Abstraction has 1988 states and 3490 transitions. [2022-12-13 16:33:14,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 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 16:33:14,543 INFO L276 IsEmpty]: Start isEmpty. Operand 1988 states and 3490 transitions. [2022-12-13 16:33:14,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-12-13 16:33:14,544 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:33:14,544 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:33:14,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 16:33:14,544 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:33:14,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:33:14,544 INFO L85 PathProgramCache]: Analyzing trace with hash 696011330, now seen corresponding path program 1 times [2022-12-13 16:33:14,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:33:14,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114942592] [2022-12-13 16:33:14,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:33:14,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:33:14,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:33:14,576 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 16:33:14,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:33:14,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114942592] [2022-12-13 16:33:14,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114942592] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:33:14,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:33:14,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:33:14,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845118536] [2022-12-13 16:33:14,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:33:14,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:33:14,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:33:14,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:33:14,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:33:14,578 INFO L87 Difference]: Start difference. First operand 1988 states and 3490 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 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 16:33:14,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:33:14,667 INFO L93 Difference]: Finished difference Result 2828 states and 4752 transitions. [2022-12-13 16:33:14,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:33:14,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-12-13 16:33:14,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:33:14,674 INFO L225 Difference]: With dead ends: 2828 [2022-12-13 16:33:14,674 INFO L226 Difference]: Without dead ends: 2384 [2022-12-13 16:33:14,675 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 16:33:14,675 INFO L413 NwaCegarLoop]: 1585 mSDtfsCounter, 1490 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1665 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:33:14,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 1665 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:33:14,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2384 states. [2022-12-13 16:33:14,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2384 to 2382. [2022-12-13 16:33:14,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2382 states, 2380 states have (on average 1.7084033613445377) internal successors, (4066), 2381 states have internal predecessors, (4066), 0 states have call successors, (0), 0 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 16:33:14,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2382 states to 2382 states and 4066 transitions. [2022-12-13 16:33:14,762 INFO L78 Accepts]: Start accepts. Automaton has 2382 states and 4066 transitions. Word has length 58 [2022-12-13 16:33:14,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:33:14,762 INFO L495 AbstractCegarLoop]: Abstraction has 2382 states and 4066 transitions. [2022-12-13 16:33:14,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 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 16:33:14,762 INFO L276 IsEmpty]: Start isEmpty. Operand 2382 states and 4066 transitions. [2022-12-13 16:33:14,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-12-13 16:33:14,762 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:33:14,762 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:33:14,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 16:33:14,763 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:33:14,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:33:14,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1818023102, now seen corresponding path program 1 times [2022-12-13 16:33:14,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:33:14,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564179719] [2022-12-13 16:33:14,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:33:14,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:33:14,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:33:14,795 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 16:33:14,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:33:14,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564179719] [2022-12-13 16:33:14,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564179719] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:33:14,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:33:14,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:33:14,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736853426] [2022-12-13 16:33:14,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:33:14,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:33:14,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:33:14,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:33:14,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:33:14,797 INFO L87 Difference]: Start difference. First operand 2382 states and 4066 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 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 16:33:14,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:33:14,974 INFO L93 Difference]: Finished difference Result 3962 states and 6396 transitions. [2022-12-13 16:33:14,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:33:14,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-12-13 16:33:14,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:33:14,982 INFO L225 Difference]: With dead ends: 3962 [2022-12-13 16:33:14,983 INFO L226 Difference]: Without dead ends: 3124 [2022-12-13 16:33:14,984 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 16:33:14,985 INFO L413 NwaCegarLoop]: 1583 mSDtfsCounter, 1488 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1667 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:33:14,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 1667 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:33:14,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3124 states. [2022-12-13 16:33:15,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3124 to 3122. [2022-12-13 16:33:15,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3122 states, 3120 states have (on average 1.6416666666666666) internal successors, (5122), 3121 states have internal predecessors, (5122), 0 states have call successors, (0), 0 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 16:33:15,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3122 states to 3122 states and 5122 transitions. [2022-12-13 16:33:15,176 INFO L78 Accepts]: Start accepts. Automaton has 3122 states and 5122 transitions. Word has length 58 [2022-12-13 16:33:15,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:33:15,176 INFO L495 AbstractCegarLoop]: Abstraction has 3122 states and 5122 transitions. [2022-12-13 16:33:15,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 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 16:33:15,177 INFO L276 IsEmpty]: Start isEmpty. Operand 3122 states and 5122 transitions. [2022-12-13 16:33:15,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-12-13 16:33:15,177 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:33:15,178 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:33:15,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 16:33:15,178 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:33:15,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:33:15,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1673218114, now seen corresponding path program 1 times [2022-12-13 16:33:15,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:33:15,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008050752] [2022-12-13 16:33:15,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:33:15,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:33:15,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:33:15,211 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 16:33:15,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:33:15,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008050752] [2022-12-13 16:33:15,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008050752] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:33:15,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:33:15,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:33:15,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117915152] [2022-12-13 16:33:15,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:33:15,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:33:15,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:33:15,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:33:15,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:33:15,213 INFO L87 Difference]: Start difference. First operand 3122 states and 5122 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 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 16:33:15,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:33:15,523 INFO L93 Difference]: Finished difference Result 6086 states and 9396 transitions. [2022-12-13 16:33:15,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:33:15,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-12-13 16:33:15,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:33:15,536 INFO L225 Difference]: With dead ends: 6086 [2022-12-13 16:33:15,537 INFO L226 Difference]: Without dead ends: 4508 [2022-12-13 16:33:15,539 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 16:33:15,540 INFO L413 NwaCegarLoop]: 1597 mSDtfsCounter, 1494 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:33:15,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 1669 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:33:15,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4508 states. [2022-12-13 16:33:15,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4508 to 4506. [2022-12-13 16:33:15,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4506 states, 4504 states have (on average 1.5634991119005328) internal successors, (7042), 4505 states have internal predecessors, (7042), 0 states have call successors, (0), 0 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 16:33:15,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4506 states to 4506 states and 7042 transitions. [2022-12-13 16:33:15,804 INFO L78 Accepts]: Start accepts. Automaton has 4506 states and 7042 transitions. Word has length 58 [2022-12-13 16:33:15,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:33:15,804 INFO L495 AbstractCegarLoop]: Abstraction has 4506 states and 7042 transitions. [2022-12-13 16:33:15,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 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 16:33:15,805 INFO L276 IsEmpty]: Start isEmpty. Operand 4506 states and 7042 transitions. [2022-12-13 16:33:15,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-13 16:33:15,806 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:33:15,806 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 16:33:15,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 16:33:15,807 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:33:15,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:33:15,807 INFO L85 PathProgramCache]: Analyzing trace with hash 273219202, now seen corresponding path program 1 times [2022-12-13 16:33:15,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:33:15,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716682141] [2022-12-13 16:33:15,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:33:15,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:33:15,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:33:15,913 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 16:33:15,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:33:15,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716682141] [2022-12-13 16:33:15,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716682141] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:33:15,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:33:15,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 16:33:15,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795561899] [2022-12-13 16:33:15,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:33:15,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:33:15,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:33:15,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:33:15,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:33:15,915 INFO L87 Difference]: Start difference. First operand 4506 states and 7042 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 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 16:33:17,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:33:17,330 INFO L93 Difference]: Finished difference Result 19110 states and 27848 transitions. [2022-12-13 16:33:17,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 16:33:17,331 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 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 77 [2022-12-13 16:33:17,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:33:17,363 INFO L225 Difference]: With dead ends: 19110 [2022-12-13 16:33:17,363 INFO L226 Difference]: Without dead ends: 16996 [2022-12-13 16:33:17,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-12-13 16:33:17,369 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 6307 mSDsluCounter, 1964 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6307 SdHoareTripleChecker+Valid, 3568 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:33:17,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6307 Valid, 3568 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 16:33:17,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16996 states. [2022-12-13 16:33:17,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16996 to 7050. [2022-12-13 16:33:17,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7050 states, 7048 states have (on average 1.507661748013621) internal successors, (10626), 7049 states have internal predecessors, (10626), 0 states have call successors, (0), 0 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 16:33:17,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7050 states to 7050 states and 10626 transitions. [2022-12-13 16:33:17,972 INFO L78 Accepts]: Start accepts. Automaton has 7050 states and 10626 transitions. Word has length 77 [2022-12-13 16:33:17,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:33:17,973 INFO L495 AbstractCegarLoop]: Abstraction has 7050 states and 10626 transitions. [2022-12-13 16:33:17,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 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 16:33:17,973 INFO L276 IsEmpty]: Start isEmpty. Operand 7050 states and 10626 transitions. [2022-12-13 16:33:17,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-13 16:33:17,974 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:33:17,974 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 16:33:17,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 16:33:17,975 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:33:17,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:33:17,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1775337602, now seen corresponding path program 1 times [2022-12-13 16:33:17,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:33:17,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150404104] [2022-12-13 16:33:17,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:33:17,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:33:17,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:33:18,073 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 16:33:18,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:33:18,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150404104] [2022-12-13 16:33:18,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150404104] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:33:18,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:33:18,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 16:33:18,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142959593] [2022-12-13 16:33:18,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:33:18,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:33:18,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:33:18,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:33:18,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:33:18,075 INFO L87 Difference]: Start difference. First operand 7050 states and 10626 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 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 16:33:19,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:33:19,859 INFO L93 Difference]: Finished difference Result 22070 states and 32040 transitions. [2022-12-13 16:33:19,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 16:33:19,860 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 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 77 [2022-12-13 16:33:19,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:33:19,884 INFO L225 Difference]: With dead ends: 22070 [2022-12-13 16:33:19,884 INFO L226 Difference]: Without dead ends: 19108 [2022-12-13 16:33:19,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-12-13 16:33:19,889 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 6353 mSDsluCounter, 1993 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6353 SdHoareTripleChecker+Valid, 3597 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:33:19,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6353 Valid, 3597 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 16:33:19,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19108 states. [2022-12-13 16:33:21,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19108 to 11066. [2022-12-13 16:33:21,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11066 states, 11064 states have (on average 1.4708966015907448) internal successors, (16274), 11065 states have internal predecessors, (16274), 0 states have call successors, (0), 0 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 16:33:21,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11066 states to 11066 states and 16274 transitions. [2022-12-13 16:33:21,024 INFO L78 Accepts]: Start accepts. Automaton has 11066 states and 16274 transitions. Word has length 77 [2022-12-13 16:33:21,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:33:21,024 INFO L495 AbstractCegarLoop]: Abstraction has 11066 states and 16274 transitions. [2022-12-13 16:33:21,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 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 16:33:21,025 INFO L276 IsEmpty]: Start isEmpty. Operand 11066 states and 16274 transitions. [2022-12-13 16:33:21,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-13 16:33:21,026 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:33:21,026 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 16:33:21,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 16:33:21,026 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:33:21,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:33:21,027 INFO L85 PathProgramCache]: Analyzing trace with hash -440131198, now seen corresponding path program 1 times [2022-12-13 16:33:21,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:33:21,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105430246] [2022-12-13 16:33:21,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:33:21,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:33:21,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:33:21,117 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 16:33:21,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:33:21,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105430246] [2022-12-13 16:33:21,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105430246] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:33:21,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:33:21,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 16:33:21,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309341468] [2022-12-13 16:33:21,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:33:21,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:33:21,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:33:21,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:33:21,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:33:21,119 INFO L87 Difference]: Start difference. First operand 11066 states and 16274 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 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 16:33:23,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:33:23,541 INFO L93 Difference]: Finished difference Result 25030 states and 36216 transitions. [2022-12-13 16:33:23,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 16:33:23,542 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 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 77 [2022-12-13 16:33:23,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:33:23,565 INFO L225 Difference]: With dead ends: 25030 [2022-12-13 16:33:23,565 INFO L226 Difference]: Without dead ends: 22068 [2022-12-13 16:33:23,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-12-13 16:33:23,571 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 6397 mSDsluCounter, 1976 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6397 SdHoareTripleChecker+Valid, 3578 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:33:23,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6397 Valid, 3578 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 16:33:23,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22068 states. [2022-12-13 16:33:24,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22068 to 14026. [2022-12-13 16:33:24,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14026 states, 14024 states have (on average 1.4582144894466629) internal successors, (20450), 14025 states have internal predecessors, (20450), 0 states have call successors, (0), 0 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 16:33:24,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14026 states to 14026 states and 20450 transitions. [2022-12-13 16:33:24,968 INFO L78 Accepts]: Start accepts. Automaton has 14026 states and 20450 transitions. Word has length 77 [2022-12-13 16:33:24,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:33:24,968 INFO L495 AbstractCegarLoop]: Abstraction has 14026 states and 20450 transitions. [2022-12-13 16:33:24,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 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 16:33:24,968 INFO L276 IsEmpty]: Start isEmpty. Operand 14026 states and 20450 transitions. [2022-12-13 16:33:24,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-13 16:33:24,970 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:33:24,970 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 16:33:24,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 16:33:24,970 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:33:24,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:33:24,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1340801666, now seen corresponding path program 1 times [2022-12-13 16:33:24,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:33:24,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184087169] [2022-12-13 16:33:24,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:33:24,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:33:24,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:33:25,060 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 16:33:25,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:33:25,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184087169] [2022-12-13 16:33:25,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184087169] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:33:25,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:33:25,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 16:33:25,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550672588] [2022-12-13 16:33:25,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:33:25,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:33:25,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:33:25,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:33:25,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:33:25,062 INFO L87 Difference]: Start difference. First operand 14026 states and 20450 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 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 16:33:27,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:33:27,869 INFO L93 Difference]: Finished difference Result 27990 states and 40392 transitions. [2022-12-13 16:33:27,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 16:33:27,870 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 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 77 [2022-12-13 16:33:27,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:33:27,894 INFO L225 Difference]: With dead ends: 27990 [2022-12-13 16:33:27,894 INFO L226 Difference]: Without dead ends: 25028 [2022-12-13 16:33:27,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-12-13 16:33:27,901 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 6355 mSDsluCounter, 2002 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6355 SdHoareTripleChecker+Valid, 3604 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:33:27,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6355 Valid, 3604 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 16:33:27,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25028 states. [2022-12-13 16:33:29,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25028 to 16986. [2022-12-13 16:33:29,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16986 states, 16984 states have (on average 1.4499528968440885) internal successors, (24626), 16985 states have internal predecessors, (24626), 0 states have call successors, (0), 0 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 16:33:29,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16986 states to 16986 states and 24626 transitions. [2022-12-13 16:33:29,656 INFO L78 Accepts]: Start accepts. Automaton has 16986 states and 24626 transitions. Word has length 77 [2022-12-13 16:33:29,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:33:29,656 INFO L495 AbstractCegarLoop]: Abstraction has 16986 states and 24626 transitions. [2022-12-13 16:33:29,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 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 16:33:29,657 INFO L276 IsEmpty]: Start isEmpty. Operand 16986 states and 24626 transitions. [2022-12-13 16:33:29,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-13 16:33:29,658 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:33:29,658 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 16:33:29,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 16:33:29,658 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:33:29,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:33:29,659 INFO L85 PathProgramCache]: Analyzing trace with hash 537075586, now seen corresponding path program 1 times [2022-12-13 16:33:29,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:33:29,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952666667] [2022-12-13 16:33:29,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:33:29,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:33:29,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:33:29,760 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 16:33:29,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:33:29,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952666667] [2022-12-13 16:33:29,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952666667] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:33:29,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:33:29,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 16:33:29,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487116314] [2022-12-13 16:33:29,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:33:29,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:33:29,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:33:29,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:33:29,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:33:29,762 INFO L87 Difference]: Start difference. First operand 16986 states and 24626 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 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 16:33:33,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:33:33,045 INFO L93 Difference]: Finished difference Result 30950 states and 44568 transitions. [2022-12-13 16:33:33,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 16:33:33,046 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 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 77 [2022-12-13 16:33:33,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:33:33,075 INFO L225 Difference]: With dead ends: 30950 [2022-12-13 16:33:33,075 INFO L226 Difference]: Without dead ends: 27988 [2022-12-13 16:33:33,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-12-13 16:33:33,083 INFO L413 NwaCegarLoop]: 1601 mSDtfsCounter, 6309 mSDsluCounter, 2083 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6309 SdHoareTripleChecker+Valid, 3684 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:33:33,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6309 Valid, 3684 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 16:33:33,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27988 states. [2022-12-13 16:33:35,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27988 to 19946. [2022-12-13 16:33:35,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19946 states, 19944 states have (on average 1.4441436020858403) internal successors, (28802), 19945 states have internal predecessors, (28802), 0 states have call successors, (0), 0 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 16:33:35,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19946 states to 19946 states and 28802 transitions. [2022-12-13 16:33:35,257 INFO L78 Accepts]: Start accepts. Automaton has 19946 states and 28802 transitions. Word has length 77 [2022-12-13 16:33:35,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:33:35,257 INFO L495 AbstractCegarLoop]: Abstraction has 19946 states and 28802 transitions. [2022-12-13 16:33:35,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 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 16:33:35,258 INFO L276 IsEmpty]: Start isEmpty. Operand 19946 states and 28802 transitions. [2022-12-13 16:33:35,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-12-13 16:33:35,259 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:33:35,259 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 16:33:35,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 16:33:35,260 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:33:35,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:33:35,260 INFO L85 PathProgramCache]: Analyzing trace with hash 895246760, now seen corresponding path program 1 times [2022-12-13 16:33:35,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:33:35,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730976187] [2022-12-13 16:33:35,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:33:35,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:33:35,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:33:35,313 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:33:35,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:33:35,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730976187] [2022-12-13 16:33:35,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730976187] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:33:35,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:33:35,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:33:35,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276510974] [2022-12-13 16:33:35,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:33:35,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:33:35,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:33:35,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:33:35,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:33:35,315 INFO L87 Difference]: Start difference. First operand 19946 states and 28802 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 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 16:33:37,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:33:37,435 INFO L93 Difference]: Finished difference Result 38350 states and 54788 transitions. [2022-12-13 16:33:37,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:33:37,436 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2022-12-13 16:33:37,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:33:37,453 INFO L225 Difference]: With dead ends: 38350 [2022-12-13 16:33:37,453 INFO L226 Difference]: Without dead ends: 19948 [2022-12-13 16:33:37,462 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 16:33:37,462 INFO L413 NwaCegarLoop]: 1577 mSDtfsCounter, 45 mSDsluCounter, 1531 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3108 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:33:37,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3108 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:33:37,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19948 states. [2022-12-13 16:33:39,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19948 to 19946. [2022-12-13 16:33:39,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19946 states, 19944 states have (on average 1.4293020457280385) internal successors, (28506), 19945 states have internal predecessors, (28506), 0 states have call successors, (0), 0 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 16:33:39,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19946 states to 19946 states and 28506 transitions. [2022-12-13 16:33:39,628 INFO L78 Accepts]: Start accepts. Automaton has 19946 states and 28506 transitions. Word has length 78 [2022-12-13 16:33:39,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:33:39,629 INFO L495 AbstractCegarLoop]: Abstraction has 19946 states and 28506 transitions. [2022-12-13 16:33:39,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 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 16:33:39,629 INFO L276 IsEmpty]: Start isEmpty. Operand 19946 states and 28506 transitions. [2022-12-13 16:33:39,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-12-13 16:33:39,630 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:33:39,630 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 16:33:39,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 16:33:39,630 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:33:39,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:33:39,631 INFO L85 PathProgramCache]: Analyzing trace with hash -615640646, now seen corresponding path program 1 times [2022-12-13 16:33:39,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:33:39,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848460053] [2022-12-13 16:33:39,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:33:39,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:33:39,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:33:39,692 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:33:39,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:33:39,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848460053] [2022-12-13 16:33:39,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848460053] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:33:39,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:33:39,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:33:39,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262807635] [2022-12-13 16:33:39,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:33:39,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:33:39,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:33:39,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:33:39,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:33:39,694 INFO L87 Difference]: Start difference. First operand 19946 states and 28506 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 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 16:33:40,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:33:40,552 INFO L93 Difference]: Finished difference Result 26833 states and 38200 transitions. [2022-12-13 16:33:40,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:33:40,552 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2022-12-13 16:33:40,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:33:40,559 INFO L225 Difference]: With dead ends: 26833 [2022-12-13 16:33:40,559 INFO L226 Difference]: Without dead ends: 8431 [2022-12-13 16:33:40,570 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 16:33:40,570 INFO L413 NwaCegarLoop]: 1575 mSDtfsCounter, 39 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 3105 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:33:40,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 3105 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:33:40,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8431 states. [2022-12-13 16:33:41,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8431 to 8423. [2022-12-13 16:33:41,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8423 states, 8421 states have (on average 1.4723904524403277) internal successors, (12399), 8422 states have internal predecessors, (12399), 0 states have call successors, (0), 0 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 16:33:41,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8423 states to 8423 states and 12399 transitions. [2022-12-13 16:33:41,776 INFO L78 Accepts]: Start accepts. Automaton has 8423 states and 12399 transitions. Word has length 79 [2022-12-13 16:33:41,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:33:41,777 INFO L495 AbstractCegarLoop]: Abstraction has 8423 states and 12399 transitions. [2022-12-13 16:33:41,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 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 16:33:41,777 INFO L276 IsEmpty]: Start isEmpty. Operand 8423 states and 12399 transitions. [2022-12-13 16:33:41,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-13 16:33:41,778 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:33:41,778 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 16:33:41,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 16:33:41,778 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:33:41,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:33:41,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1683802150, now seen corresponding path program 1 times [2022-12-13 16:33:41,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:33:41,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981554243] [2022-12-13 16:33:41,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:33:41,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:33:41,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:33:41,829 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:33:41,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:33:41,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981554243] [2022-12-13 16:33:41,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981554243] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:33:41,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:33:41,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:33:41,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361375663] [2022-12-13 16:33:41,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:33:41,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:33:41,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:33:41,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:33:41,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:33:41,831 INFO L87 Difference]: Start difference. First operand 8423 states and 12399 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 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 16:33:42,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:33:42,262 INFO L93 Difference]: Finished difference Result 11859 states and 17185 transitions. [2022-12-13 16:33:42,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:33:42,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-12-13 16:33:42,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:33:42,266 INFO L225 Difference]: With dead ends: 11859 [2022-12-13 16:33:42,266 INFO L226 Difference]: Without dead ends: 4993 [2022-12-13 16:33:42,270 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 16:33:42,271 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 41 mSDsluCounter, 1515 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 3084 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:33:42,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 3084 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:33:42,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4993 states. [2022-12-13 16:33:42,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4993 to 4991. [2022-12-13 16:33:42,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4991 states, 4989 states have (on average 1.5159350571256764) internal successors, (7563), 4990 states have internal predecessors, (7563), 0 states have call successors, (0), 0 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 16:33:42,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4991 states to 4991 states and 7563 transitions. [2022-12-13 16:33:42,705 INFO L78 Accepts]: Start accepts. Automaton has 4991 states and 7563 transitions. Word has length 80 [2022-12-13 16:33:42,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:33:42,705 INFO L495 AbstractCegarLoop]: Abstraction has 4991 states and 7563 transitions. [2022-12-13 16:33:42,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 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 16:33:42,706 INFO L276 IsEmpty]: Start isEmpty. Operand 4991 states and 7563 transitions. [2022-12-13 16:33:42,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-12-13 16:33:42,707 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:33:42,707 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:33:42,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 16:33:42,707 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:33:42,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:33:42,708 INFO L85 PathProgramCache]: Analyzing trace with hash 263472268, now seen corresponding path program 1 times [2022-12-13 16:33:42,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:33:42,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029597367] [2022-12-13 16:33:42,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:33:42,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:33:42,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:33:42,782 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:33:42,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:33:42,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029597367] [2022-12-13 16:33:42,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029597367] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:33:42,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:33:42,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:33:42,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877131015] [2022-12-13 16:33:42,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:33:42,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:33:42,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:33:42,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:33:42,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:33:42,784 INFO L87 Difference]: Start difference. First operand 4991 states and 7563 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 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 16:33:43,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:33:43,023 INFO L93 Difference]: Finished difference Result 6711 states and 9931 transitions. [2022-12-13 16:33:43,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:33:43,024 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2022-12-13 16:33:43,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:33:43,026 INFO L225 Difference]: With dead ends: 6711 [2022-12-13 16:33:43,026 INFO L226 Difference]: Without dead ends: 3277 [2022-12-13 16:33:43,028 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 16:33:43,029 INFO L413 NwaCegarLoop]: 1562 mSDtfsCounter, 38 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 3069 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:33:43,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 3069 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:33:43,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3277 states. [2022-12-13 16:33:43,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3277 to 3275. [2022-12-13 16:33:43,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3275 states, 3273 states have (on average 1.5798961197677972) internal successors, (5171), 3274 states have internal predecessors, (5171), 0 states have call successors, (0), 0 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 16:33:43,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3275 states to 3275 states and 5171 transitions. [2022-12-13 16:33:43,245 INFO L78 Accepts]: Start accepts. Automaton has 3275 states and 5171 transitions. Word has length 82 [2022-12-13 16:33:43,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:33:43,245 INFO L495 AbstractCegarLoop]: Abstraction has 3275 states and 5171 transitions. [2022-12-13 16:33:43,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 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 16:33:43,246 INFO L276 IsEmpty]: Start isEmpty. Operand 3275 states and 5171 transitions. [2022-12-13 16:33:43,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-12-13 16:33:43,247 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:33:43,247 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:33:43,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 16:33:43,247 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:33:43,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:33:43,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1956730946, now seen corresponding path program 1 times [2022-12-13 16:33:43,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:33:43,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596931463] [2022-12-13 16:33:43,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:33:43,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:33:43,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:33:43,292 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:33:43,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:33:43,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596931463] [2022-12-13 16:33:43,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596931463] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:33:43,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:33:43,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:33:43,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011432754] [2022-12-13 16:33:43,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:33:43,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:33:43,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:33:43,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:33:43,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:33:43,293 INFO L87 Difference]: Start difference. First operand 3275 states and 5171 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 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 16:33:43,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:33:43,415 INFO L93 Difference]: Finished difference Result 4137 states and 6343 transitions. [2022-12-13 16:33:43,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:33:43,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2022-12-13 16:33:43,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:33:43,417 INFO L225 Difference]: With dead ends: 4137 [2022-12-13 16:33:43,418 INFO L226 Difference]: Without dead ends: 2419 [2022-12-13 16:33:43,419 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 16:33:43,419 INFO L413 NwaCegarLoop]: 1555 mSDtfsCounter, 35 mSDsluCounter, 1499 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 3054 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:33:43,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 3054 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:33:43,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2419 states. [2022-12-13 16:33:43,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2419 to 2417. [2022-12-13 16:33:43,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2417 states, 2415 states have (on average 1.6513457556935818) internal successors, (3988), 2416 states have internal predecessors, (3988), 0 states have call successors, (0), 0 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 16:33:43,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2417 states to 2417 states and 3988 transitions. [2022-12-13 16:33:43,539 INFO L78 Accepts]: Start accepts. Automaton has 2417 states and 3988 transitions. Word has length 84 [2022-12-13 16:33:43,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:33:43,540 INFO L495 AbstractCegarLoop]: Abstraction has 2417 states and 3988 transitions. [2022-12-13 16:33:43,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 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 16:33:43,540 INFO L276 IsEmpty]: Start isEmpty. Operand 2417 states and 3988 transitions. [2022-12-13 16:33:43,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-12-13 16:33:43,540 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:33:43,540 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 16:33:43,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 16:33:43,541 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:33:43,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:33:43,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1389986160, now seen corresponding path program 1 times [2022-12-13 16:33:43,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:33:43,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980127584] [2022-12-13 16:33:43,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:33:43,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:33:43,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:33:44,094 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:33:44,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:33:44,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980127584] [2022-12-13 16:33:44,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980127584] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:33:44,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053450470] [2022-12-13 16:33:44,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:33:44,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:33:44,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:33:44,096 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:33:44,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 16:33:44,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:33:44,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 16:33:44,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:33:44,339 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 16:33:44,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:33:44,652 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 16:33:44,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053450470] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:33:44,652 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:33:44,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 4] total 19 [2022-12-13 16:33:44,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416068071] [2022-12-13 16:33:44,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:33:44,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 16:33:44,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:33:44,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 16:33:44,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2022-12-13 16:33:44,654 INFO L87 Difference]: Start difference. First operand 2417 states and 3988 transitions. Second operand has 19 states, 19 states have (on average 12.68421052631579) internal successors, (241), 19 states have internal predecessors, (241), 0 states have call successors, (0), 0 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 16:33:47,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:33:47,779 INFO L93 Difference]: Finished difference Result 8810 states and 12413 transitions. [2022-12-13 16:33:47,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-12-13 16:33:47,780 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 12.68421052631579) internal successors, (241), 19 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-12-13 16:33:47,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:33:47,786 INFO L225 Difference]: With dead ends: 8810 [2022-12-13 16:33:47,786 INFO L226 Difference]: Without dead ends: 7950 [2022-12-13 16:33:47,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 995 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=659, Invalid=2881, Unknown=0, NotChecked=0, Total=3540 [2022-12-13 16:33:47,788 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 18618 mSDsluCounter, 6456 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18618 SdHoareTripleChecker+Valid, 7972 SdHoareTripleChecker+Invalid, 935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 16:33:47,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18618 Valid, 7972 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 889 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 16:33:47,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7950 states. [2022-12-13 16:33:48,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7950 to 5753. [2022-12-13 16:33:48,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5753 states, 5751 states have (on average 1.4315771170231264) internal successors, (8233), 5752 states have internal predecessors, (8233), 0 states have call successors, (0), 0 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 16:33:48,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5753 states to 5753 states and 8233 transitions. [2022-12-13 16:33:48,463 INFO L78 Accepts]: Start accepts. Automaton has 5753 states and 8233 transitions. Word has length 86 [2022-12-13 16:33:48,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:33:48,463 INFO L495 AbstractCegarLoop]: Abstraction has 5753 states and 8233 transitions. [2022-12-13 16:33:48,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 12.68421052631579) internal successors, (241), 19 states have internal predecessors, (241), 0 states have call successors, (0), 0 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 16:33:48,463 INFO L276 IsEmpty]: Start isEmpty. Operand 5753 states and 8233 transitions. [2022-12-13 16:33:48,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-12-13 16:33:48,464 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:33:48,464 INFO L195 NwaCegarLoop]: trace histogram [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 16:33:48,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 16:33:48,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:33:48,666 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:33:48,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:33:48,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1667542172, now seen corresponding path program 1 times [2022-12-13 16:33:48,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:33:48,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238692992] [2022-12-13 16:33:48,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:33:48,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:33:48,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:33:49,539 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:33:49,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:33:49,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238692992] [2022-12-13 16:33:49,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238692992] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:33:49,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800477708] [2022-12-13 16:33:49,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:33:49,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:33:49,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:33:49,540 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:33:49,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 16:33:49,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:33:49,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-13 16:33:49,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:33:50,589 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:33:50,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:33:51,900 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:33:51,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800477708] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:33:51,900 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:33:51,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 35 [2022-12-13 16:33:51,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417617357] [2022-12-13 16:33:51,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:33:51,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-12-13 16:33:51,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:33:51,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-12-13 16:33:51,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1074, Unknown=0, NotChecked=0, Total=1190 [2022-12-13 16:33:51,903 INFO L87 Difference]: Start difference. First operand 5753 states and 8233 transitions. Second operand has 35 states, 35 states have (on average 6.485714285714286) internal successors, (227), 35 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 16:34:31,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:34:31,127 INFO L93 Difference]: Finished difference Result 77956 states and 100933 transitions. [2022-12-13 16:34:31,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2022-12-13 16:34:31,127 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 6.485714285714286) internal successors, (227), 35 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 87 [2022-12-13 16:34:31,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:34:31,204 INFO L225 Difference]: With dead ends: 77956 [2022-12-13 16:34:31,204 INFO L226 Difference]: Without dead ends: 73985 [2022-12-13 16:34:31,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 151 SyntacticMatches, 1 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23318 ImplicationChecksByTransitivity, 22.0s TimeCoverageRelationStatistics Valid=7220, Invalid=49662, Unknown=0, NotChecked=0, Total=56882 [2022-12-13 16:34:31,226 INFO L413 NwaCegarLoop]: 1636 mSDtfsCounter, 31242 mSDsluCounter, 14233 mSDsCounter, 0 mSdLazyCounter, 2801 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31242 SdHoareTripleChecker+Valid, 15869 SdHoareTripleChecker+Invalid, 2998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 2801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-12-13 16:34:31,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31242 Valid, 15869 Invalid, 2998 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [197 Valid, 2801 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-12-13 16:34:31,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73985 states. [2022-12-13 16:34:35,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73985 to 17688. [2022-12-13 16:34:35,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17688 states, 17686 states have (on average 1.3112066040936334) internal successors, (23190), 17687 states have internal predecessors, (23190), 0 states have call successors, (0), 0 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 16:34:35,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17688 states to 17688 states and 23190 transitions. [2022-12-13 16:34:35,365 INFO L78 Accepts]: Start accepts. Automaton has 17688 states and 23190 transitions. Word has length 87 [2022-12-13 16:34:35,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:34:35,365 INFO L495 AbstractCegarLoop]: Abstraction has 17688 states and 23190 transitions. [2022-12-13 16:34:35,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 6.485714285714286) internal successors, (227), 35 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 16:34:35,366 INFO L276 IsEmpty]: Start isEmpty. Operand 17688 states and 23190 transitions. [2022-12-13 16:34:35,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-12-13 16:34:35,367 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:34:35,367 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 16:34:35,371 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 16:34:35,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:34:35,569 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:34:35,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:34:35,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1769142018, now seen corresponding path program 1 times [2022-12-13 16:34:35,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:34:35,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278817094] [2022-12-13 16:34:35,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:34:35,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:34:35,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:34:36,250 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:34:36,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:34:36,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278817094] [2022-12-13 16:34:36,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278817094] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:34:36,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188590357] [2022-12-13 16:34:36,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:34:36,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:34:36,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:34:36,251 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:34:36,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 16:34:36,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:34:36,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-13 16:34:36,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:34:36,951 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:34:36,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:34:38,374 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:34:38,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188590357] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:34:38,374 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:34:38,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2022-12-13 16:34:38,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693025098] [2022-12-13 16:34:38,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:34:38,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-13 16:34:38,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:34:38,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-13 16:34:38,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=825, Unknown=0, NotChecked=0, Total=992 [2022-12-13 16:34:38,377 INFO L87 Difference]: Start difference. First operand 17688 states and 23190 transitions. Second operand has 32 states, 32 states have (on average 7.6875) internal successors, (246), 32 states have internal predecessors, (246), 0 states have call successors, (0), 0 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 16:34:51,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:34:51,878 INFO L93 Difference]: Finished difference Result 58620 states and 73707 transitions. [2022-12-13 16:34:51,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-13 16:34:51,879 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 7.6875) internal successors, (246), 32 states have internal predecessors, (246), 0 states have call successors, (0), 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 88 [2022-12-13 16:34:51,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:34:51,922 INFO L225 Difference]: With dead ends: 58620 [2022-12-13 16:34:51,922 INFO L226 Difference]: Without dead ends: 44192 [2022-12-13 16:34:51,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 654 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=640, Invalid=2222, Unknown=0, NotChecked=0, Total=2862 [2022-12-13 16:34:51,934 INFO L413 NwaCegarLoop]: 1524 mSDtfsCounter, 9587 mSDsluCounter, 6797 mSDsCounter, 0 mSdLazyCounter, 1029 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9587 SdHoareTripleChecker+Valid, 8321 SdHoareTripleChecker+Invalid, 1056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 16:34:51,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9587 Valid, 8321 Invalid, 1056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1029 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 16:34:52,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44192 states. [2022-12-13 16:35:00,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44192 to 33038. [2022-12-13 16:35:00,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33038 states, 33036 states have (on average 1.2747003269160915) internal successors, (42111), 33037 states have internal predecessors, (42111), 0 states have call successors, (0), 0 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 16:35:00,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33038 states to 33038 states and 42111 transitions. [2022-12-13 16:35:00,513 INFO L78 Accepts]: Start accepts. Automaton has 33038 states and 42111 transitions. Word has length 88 [2022-12-13 16:35:00,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:35:00,513 INFO L495 AbstractCegarLoop]: Abstraction has 33038 states and 42111 transitions. [2022-12-13 16:35:00,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 7.6875) internal successors, (246), 32 states have internal predecessors, (246), 0 states have call successors, (0), 0 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 16:35:00,514 INFO L276 IsEmpty]: Start isEmpty. Operand 33038 states and 42111 transitions. [2022-12-13 16:35:00,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-12-13 16:35:00,515 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:35:00,515 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 16:35:00,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-13 16:35:00,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:35:00,717 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:35:00,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:35:00,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1728911506, now seen corresponding path program 1 times [2022-12-13 16:35:00,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:35:00,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613544865] [2022-12-13 16:35:00,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:35:00,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:35:00,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:35:00,987 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:35:00,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:35:00,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613544865] [2022-12-13 16:35:00,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613544865] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:35:00,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178686828] [2022-12-13 16:35:00,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:35:00,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:35:00,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:35:00,989 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:35:00,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 16:35:01,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:35:01,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 16:35:01,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:35:01,744 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:35:01,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:35:02,562 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:35:02,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178686828] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:35:02,562 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:35:02,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2022-12-13 16:35:02,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064587142] [2022-12-13 16:35:02,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:35:02,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-13 16:35:02,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:35:02,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-13 16:35:02,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2022-12-13 16:35:02,564 INFO L87 Difference]: Start difference. First operand 33038 states and 42111 transitions. Second operand has 25 states, 25 states have (on average 9.44) internal successors, (236), 24 states have internal predecessors, (236), 0 states have call successors, (0), 0 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 16:35:22,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:35:22,100 INFO L93 Difference]: Finished difference Result 80562 states and 100985 transitions. [2022-12-13 16:35:22,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-12-13 16:35:22,100 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 9.44) internal successors, (236), 24 states have internal predecessors, (236), 0 states have call successors, (0), 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 88 [2022-12-13 16:35:22,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:35:22,161 INFO L225 Difference]: With dead ends: 80562 [2022-12-13 16:35:22,161 INFO L226 Difference]: Without dead ends: 51902 [2022-12-13 16:35:22,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 159 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 901 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=886, Invalid=3274, Unknown=0, NotChecked=0, Total=4160 [2022-12-13 16:35:22,181 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 20658 mSDsluCounter, 7264 mSDsCounter, 0 mSdLazyCounter, 1439 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20658 SdHoareTripleChecker+Valid, 8851 SdHoareTripleChecker+Invalid, 1468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:35:22,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20658 Valid, 8851 Invalid, 1468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1439 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-13 16:35:22,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51902 states. [2022-12-13 16:35:31,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51902 to 29556. [2022-12-13 16:35:31,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29556 states, 29554 states have (on average 1.2630439196047911) internal successors, (37328), 29555 states have internal predecessors, (37328), 0 states have call successors, (0), 0 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 16:35:31,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29556 states to 29556 states and 37328 transitions. [2022-12-13 16:35:31,223 INFO L78 Accepts]: Start accepts. Automaton has 29556 states and 37328 transitions. Word has length 88 [2022-12-13 16:35:31,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:35:31,223 INFO L495 AbstractCegarLoop]: Abstraction has 29556 states and 37328 transitions. [2022-12-13 16:35:31,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 9.44) internal successors, (236), 24 states have internal predecessors, (236), 0 states have call successors, (0), 0 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 16:35:31,224 INFO L276 IsEmpty]: Start isEmpty. Operand 29556 states and 37328 transitions. [2022-12-13 16:35:31,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-12-13 16:35:31,225 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:35:31,225 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:35:31,230 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 16:35:31,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-12-13 16:35:31,427 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:35:31,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:35:31,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1760002960, now seen corresponding path program 1 times [2022-12-13 16:35:31,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:35:31,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980763073] [2022-12-13 16:35:31,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:35:31,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:35:31,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:35:31,766 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:35:31,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:35:31,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980763073] [2022-12-13 16:35:31,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980763073] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:35:31,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999490609] [2022-12-13 16:35:31,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:35:31,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:35:31,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:35:31,767 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:35:31,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 16:35:31,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:35:31,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-13 16:35:31,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:35:32,220 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:35:32,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:35:33,333 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:35:33,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999490609] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:35:33,333 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:35:33,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 12] total 27 [2022-12-13 16:35:33,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086227205] [2022-12-13 16:35:33,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:35:33,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-13 16:35:33,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:35:33,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-13 16:35:33,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=574, Unknown=0, NotChecked=0, Total=702 [2022-12-13 16:35:33,335 INFO L87 Difference]: Start difference. First operand 29556 states and 37328 transitions. Second operand has 27 states, 27 states have (on average 8.481481481481481) internal successors, (229), 27 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 16:36:05,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:36:05,306 INFO L93 Difference]: Finished difference Result 111910 states and 137850 transitions. [2022-12-13 16:36:05,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-13 16:36:05,307 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 8.481481481481481) internal successors, (229), 27 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 89 [2022-12-13 16:36:05,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:36:05,405 INFO L225 Difference]: With dead ends: 111910 [2022-12-13 16:36:05,405 INFO L226 Difference]: Without dead ends: 87088 [2022-12-13 16:36:05,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 160 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=437, Invalid=1455, Unknown=0, NotChecked=0, Total=1892 [2022-12-13 16:36:05,432 INFO L413 NwaCegarLoop]: 1562 mSDtfsCounter, 12984 mSDsluCounter, 8225 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12984 SdHoareTripleChecker+Valid, 9787 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 16:36:05,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12984 Valid, 9787 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 16:36:05,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87088 states. [2022-12-13 16:36:23,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87088 to 54544. [2022-12-13 16:36:23,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54544 states, 54542 states have (on average 1.2421986725825969) internal successors, (67752), 54543 states have internal predecessors, (67752), 0 states have call successors, (0), 0 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 16:36:23,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54544 states to 54544 states and 67752 transitions. [2022-12-13 16:36:23,666 INFO L78 Accepts]: Start accepts. Automaton has 54544 states and 67752 transitions. Word has length 89 [2022-12-13 16:36:23,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:36:23,667 INFO L495 AbstractCegarLoop]: Abstraction has 54544 states and 67752 transitions. [2022-12-13 16:36:23,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 8.481481481481481) internal successors, (229), 27 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 16:36:23,667 INFO L276 IsEmpty]: Start isEmpty. Operand 54544 states and 67752 transitions. [2022-12-13 16:36:23,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-13 16:36:23,668 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:36:23,669 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 16:36:23,673 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 16:36:23,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-12-13 16:36:23,870 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:36:23,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:36:23,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1712352226, now seen corresponding path program 1 times [2022-12-13 16:36:23,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:36:23,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405796729] [2022-12-13 16:36:23,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:36:23,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:36:23,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:36:24,600 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:36:24,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:36:24,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405796729] [2022-12-13 16:36:24,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405796729] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:36:24,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903786639] [2022-12-13 16:36:24,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:36:24,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:36:24,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:36:24,601 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:36:24,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 16:36:24,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:36:24,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 16:36:24,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:36:26,319 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:36:26,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:36:28,170 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:36:28,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903786639] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:36:28,170 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:36:28,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 28 [2022-12-13 16:36:28,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114198929] [2022-12-13 16:36:28,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:36:28,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-13 16:36:28,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:36:28,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-13 16:36:28,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=653, Unknown=0, NotChecked=0, Total=756 [2022-12-13 16:36:28,172 INFO L87 Difference]: Start difference. First operand 54544 states and 67752 transitions. Second operand has 28 states, 28 states have (on average 8.857142857142858) internal successors, (248), 28 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 16:37:06,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:37:06,886 INFO L93 Difference]: Finished difference Result 81394 states and 99520 transitions. [2022-12-13 16:37:06,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-13 16:37:06,887 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 8.857142857142858) internal successors, (248), 28 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 90 [2022-12-13 16:37:06,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:37:06,958 INFO L225 Difference]: With dead ends: 81394 [2022-12-13 16:37:06,958 INFO L226 Difference]: Without dead ends: 65046 [2022-12-13 16:37:06,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 156 SyntacticMatches, 9 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=479, Invalid=1683, Unknown=0, NotChecked=0, Total=2162 [2022-12-13 16:37:06,975 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 11710 mSDsluCounter, 16497 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11710 SdHoareTripleChecker+Valid, 18013 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 16:37:06,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11710 Valid, 18013 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-13 16:37:07,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65046 states. [2022-12-13 16:37:29,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65046 to 49354. [2022-12-13 16:37:29,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49354 states, 49352 states have (on average 1.2415504944075215) internal successors, (61273), 49353 states have internal predecessors, (61273), 0 states have call successors, (0), 0 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 16:37:29,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49354 states to 49354 states and 61273 transitions. [2022-12-13 16:37:29,208 INFO L78 Accepts]: Start accepts. Automaton has 49354 states and 61273 transitions. Word has length 90 [2022-12-13 16:37:29,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:37:29,208 INFO L495 AbstractCegarLoop]: Abstraction has 49354 states and 61273 transitions. [2022-12-13 16:37:29,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 8.857142857142858) internal successors, (248), 28 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 16:37:29,209 INFO L276 IsEmpty]: Start isEmpty. Operand 49354 states and 61273 transitions. [2022-12-13 16:37:29,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-13 16:37:29,210 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:37:29,210 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 16:37:29,216 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 16:37:29,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-12-13 16:37:29,412 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:37:29,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:37:29,413 INFO L85 PathProgramCache]: Analyzing trace with hash 693585914, now seen corresponding path program 1 times [2022-12-13 16:37:29,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:37:29,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532040634] [2022-12-13 16:37:29,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:37:29,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:37:29,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:37:30,016 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:37:30,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:37:30,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532040634] [2022-12-13 16:37:30,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532040634] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:37:30,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744671115] [2022-12-13 16:37:30,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:37:30,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:37:30,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:37:30,018 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:37:30,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 16:37:30,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:37:30,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-13 16:37:30,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:37:30,933 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:37:30,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:37:33,355 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:37:33,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744671115] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:37:33,356 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:37:33,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15, 16] total 36 [2022-12-13 16:37:33,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54019701] [2022-12-13 16:37:33,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:37:33,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-12-13 16:37:33,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:37:33,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-12-13 16:37:33,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1099, Unknown=0, NotChecked=0, Total=1260 [2022-12-13 16:37:33,357 INFO L87 Difference]: Start difference. First operand 49354 states and 61273 transitions. Second operand has 36 states, 36 states have (on average 6.611111111111111) internal successors, (238), 36 states have internal predecessors, (238), 0 states have call successors, (0), 0 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 16:38:53,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:38:53,841 INFO L93 Difference]: Finished difference Result 156984 states and 193276 transitions. [2022-12-13 16:38:53,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-12-13 16:38:53,842 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 6.611111111111111) internal successors, (238), 36 states have internal predecessors, (238), 0 states have call successors, (0), 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 90 [2022-12-13 16:38:53,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:38:54,022 INFO L225 Difference]: With dead ends: 156984 [2022-12-13 16:38:54,022 INFO L226 Difference]: Without dead ends: 140110 [2022-12-13 16:38:54,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 150 SyntacticMatches, 7 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2266 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1466, Invalid=5674, Unknown=0, NotChecked=0, Total=7140 [2022-12-13 16:38:54,053 INFO L413 NwaCegarLoop]: 1554 mSDtfsCounter, 13742 mSDsluCounter, 14607 mSDsCounter, 0 mSdLazyCounter, 1346 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13742 SdHoareTripleChecker+Valid, 16161 SdHoareTripleChecker+Invalid, 1435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-13 16:38:54,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13742 Valid, 16161 Invalid, 1435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1346 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-13 16:38:54,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140110 states. [2022-12-13 16:39:16,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140110 to 43554. [2022-12-13 16:39:16,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43554 states, 43552 states have (on average 1.2420325128581926) internal successors, (54093), 43553 states have internal predecessors, (54093), 0 states have call successors, (0), 0 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 16:39:16,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43554 states to 43554 states and 54093 transitions. [2022-12-13 16:39:16,688 INFO L78 Accepts]: Start accepts. Automaton has 43554 states and 54093 transitions. Word has length 90 [2022-12-13 16:39:16,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:39:16,689 INFO L495 AbstractCegarLoop]: Abstraction has 43554 states and 54093 transitions. [2022-12-13 16:39:16,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 6.611111111111111) internal successors, (238), 36 states have internal predecessors, (238), 0 states have call successors, (0), 0 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 16:39:16,689 INFO L276 IsEmpty]: Start isEmpty. Operand 43554 states and 54093 transitions. [2022-12-13 16:39:16,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-13 16:39:16,690 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:39:16,690 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 16:39:16,696 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 16:39:16,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-12-13 16:39:16,892 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:39:16,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:39:16,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1951573022, now seen corresponding path program 1 times [2022-12-13 16:39:16,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:39:16,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935174577] [2022-12-13 16:39:16,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:39:16,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:39:16,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:39:18,798 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:39:18,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:39:18,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935174577] [2022-12-13 16:39:18,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935174577] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:39:18,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591377605] [2022-12-13 16:39:18,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:39:18,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:39:18,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:39:18,799 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:39:18,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 16:39:18,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:39:18,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 16:39:18,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:39:19,744 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:39:19,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:39:21,083 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:39:21,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591377605] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:39:21,083 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:39:21,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 12, 12] total 48 [2022-12-13 16:39:21,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076427212] [2022-12-13 16:39:21,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:39:21,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-12-13 16:39:21,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:39:21,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-12-13 16:39:21,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=2100, Unknown=0, NotChecked=0, Total=2256 [2022-12-13 16:39:21,084 INFO L87 Difference]: Start difference. First operand 43554 states and 54093 transitions. Second operand has 48 states, 48 states have (on average 4.854166666666667) internal successors, (233), 48 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:21,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:41:21,357 INFO L93 Difference]: Finished difference Result 111054 states and 136616 transitions. [2022-12-13 16:41:21,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 284 states. [2022-12-13 16:41:21,358 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 4.854166666666667) internal successors, (233), 48 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2022-12-13 16:41:21,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:41:21,460 INFO L225 Difference]: With dead ends: 111054 [2022-12-13 16:41:21,460 INFO L226 Difference]: Without dead ends: 93142 [2022-12-13 16:41:21,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 328 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42291 ImplicationChecksByTransitivity, 52.9s TimeCoverageRelationStatistics Valid=17720, Invalid=90850, Unknown=0, NotChecked=0, Total=108570 [2022-12-13 16:41:21,491 INFO L413 NwaCegarLoop]: 1716 mSDtfsCounter, 26653 mSDsluCounter, 30907 mSDsCounter, 0 mSdLazyCounter, 5697 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26653 SdHoareTripleChecker+Valid, 32623 SdHoareTripleChecker+Invalid, 5954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 5697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-12-13 16:41:21,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26653 Valid, 32623 Invalid, 5954 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [257 Valid, 5697 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-12-13 16:41:21,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93142 states. [2022-12-13 16:41:43,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93142 to 35564. [2022-12-13 16:41:43,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35564 states, 35562 states have (on average 1.2447837579438727) internal successors, (44267), 35563 states have internal predecessors, (44267), 0 states have call successors, (0), 0 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 16:41:44,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35564 states to 35564 states and 44267 transitions. [2022-12-13 16:41:44,029 INFO L78 Accepts]: Start accepts. Automaton has 35564 states and 44267 transitions. Word has length 90 [2022-12-13 16:41:44,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:41:44,029 INFO L495 AbstractCegarLoop]: Abstraction has 35564 states and 44267 transitions. [2022-12-13 16:41:44,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 4.854166666666667) internal successors, (233), 48 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:44,029 INFO L276 IsEmpty]: Start isEmpty. Operand 35564 states and 44267 transitions. [2022-12-13 16:41:44,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-12-13 16:41:44,030 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:41:44,030 INFO L195 NwaCegarLoop]: trace histogram [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 16:41:44,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-13 16:41:44,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:41:44,232 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:41:44,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:41:44,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1291801554, now seen corresponding path program 1 times [2022-12-13 16:41:44,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:41:44,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498053530] [2022-12-13 16:41:44,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:41:44,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:41:44,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:41:45,953 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:41:45,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:41:45,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498053530] [2022-12-13 16:41:45,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498053530] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:41:45,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192892266] [2022-12-13 16:41:45,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:41:45,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:41:45,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:41:45,954 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:41:45,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 16:41:46,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:41:46,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-13 16:41:46,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:41:47,810 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:41:47,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:41:49,843 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:41:49,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192892266] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:41:49,844 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:41:49,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 16, 15] total 57 [2022-12-13 16:41:49,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605096034] [2022-12-13 16:41:49,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:41:49,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-12-13 16:41:49,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:41:49,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-12-13 16:41:49,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=2936, Unknown=0, NotChecked=0, Total=3192 [2022-12-13 16:41:49,845 INFO L87 Difference]: Start difference. First operand 35564 states and 44267 transitions. Second operand has 57 states, 57 states have (on average 4.298245614035087) internal successors, (245), 57 states have internal predecessors, (245), 0 states have call successors, (0), 0 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 16:44:23,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:44:23,475 INFO L93 Difference]: Finished difference Result 88532 states and 109025 transitions. [2022-12-13 16:44:23,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 399 states. [2022-12-13 16:44:23,476 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 4.298245614035087) internal successors, (245), 57 states have internal predecessors, (245), 0 states have call successors, (0), 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 91 [2022-12-13 16:44:23,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:44:23,557 INFO L225 Difference]: With dead ends: 88532 [2022-12-13 16:44:23,557 INFO L226 Difference]: Without dead ends: 78484 [2022-12-13 16:44:23,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 606 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 451 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83104 ImplicationChecksByTransitivity, 85.8s TimeCoverageRelationStatistics Valid=23157, Invalid=181599, Unknown=0, NotChecked=0, Total=204756 [2022-12-13 16:44:23,583 INFO L413 NwaCegarLoop]: 2027 mSDtfsCounter, 29371 mSDsluCounter, 44122 mSDsCounter, 0 mSdLazyCounter, 14186 mSolverCounterSat, 355 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29371 SdHoareTripleChecker+Valid, 46149 SdHoareTripleChecker+Invalid, 14541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 355 IncrementalHoareTripleChecker+Valid, 14186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2022-12-13 16:44:23,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29371 Valid, 46149 Invalid, 14541 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [355 Valid, 14186 Invalid, 0 Unknown, 0 Unchecked, 10.9s Time] [2022-12-13 16:44:23,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78484 states. [2022-12-13 16:44:47,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78484 to 35222. [2022-12-13 16:44:47,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35222 states, 35220 states have (on average 1.2469051675184555) internal successors, (43916), 35221 states have internal predecessors, (43916), 0 states have call successors, (0), 0 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 16:44:47,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35222 states to 35222 states and 43916 transitions. [2022-12-13 16:44:47,637 INFO L78 Accepts]: Start accepts. Automaton has 35222 states and 43916 transitions. Word has length 91 [2022-12-13 16:44:47,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:44:47,637 INFO L495 AbstractCegarLoop]: Abstraction has 35222 states and 43916 transitions. [2022-12-13 16:44:47,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 4.298245614035087) internal successors, (245), 57 states have internal predecessors, (245), 0 states have call successors, (0), 0 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 16:44:47,637 INFO L276 IsEmpty]: Start isEmpty. Operand 35222 states and 43916 transitions. [2022-12-13 16:44:47,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-12-13 16:44:47,638 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:44:47,638 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 16:44:47,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-13 16:44:47,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:44:47,839 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:44:47,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:44:47,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1494519992, now seen corresponding path program 1 times [2022-12-13 16:44:47,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:44:47,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760424954] [2022-12-13 16:44:47,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:44:47,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:44:47,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:44:48,274 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:44:48,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:44:48,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760424954] [2022-12-13 16:44:48,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760424954] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:44:48,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879797040] [2022-12-13 16:44:48,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:44:48,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:44:48,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:44:48,276 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:44:48,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 16:44:48,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:44:48,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 16:44:48,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:44:49,131 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:44:49,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:44:50,036 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:44:50,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879797040] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:44:50,036 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:44:50,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 31 [2022-12-13 16:44:50,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726042179] [2022-12-13 16:44:50,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:44:50,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-12-13 16:44:50,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:44:50,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-12-13 16:44:50,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=818, Unknown=0, NotChecked=0, Total=930 [2022-12-13 16:44:50,038 INFO L87 Difference]: Start difference. First operand 35222 states and 43916 transitions. Second operand has 31 states, 31 states have (on average 7.419354838709677) internal successors, (230), 31 states have internal predecessors, (230), 0 states have call successors, (0), 0 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 16:45:32,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:45:32,861 INFO L93 Difference]: Finished difference Result 66303 states and 81962 transitions. [2022-12-13 16:45:32,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 16:45:32,862 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 7.419354838709677) internal successors, (230), 31 states have internal predecessors, (230), 0 states have call successors, (0), 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 92 [2022-12-13 16:45:32,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:45:32,920 INFO L225 Difference]: With dead ends: 66303 [2022-12-13 16:45:32,920 INFO L226 Difference]: Without dead ends: 51661 [2022-12-13 16:45:32,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 165 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=585, Invalid=2171, Unknown=0, NotChecked=0, Total=2756 [2022-12-13 16:45:32,935 INFO L413 NwaCegarLoop]: 1579 mSDtfsCounter, 16369 mSDsluCounter, 14363 mSDsCounter, 0 mSdLazyCounter, 1105 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16369 SdHoareTripleChecker+Valid, 15942 SdHoareTripleChecker+Invalid, 1136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 16:45:32,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16369 Valid, 15942 Invalid, 1136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1105 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 16:45:32,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51661 states. [2022-12-13 16:45:53,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51661 to 28970. [2022-12-13 16:45:53,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28970 states, 28968 states have (on average 1.2515189174261254) internal successors, (36254), 28969 states have internal predecessors, (36254), 0 states have call successors, (0), 0 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 16:45:53,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28970 states to 28970 states and 36254 transitions. [2022-12-13 16:45:53,873 INFO L78 Accepts]: Start accepts. Automaton has 28970 states and 36254 transitions. Word has length 92 [2022-12-13 16:45:53,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:45:53,873 INFO L495 AbstractCegarLoop]: Abstraction has 28970 states and 36254 transitions. [2022-12-13 16:45:53,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 7.419354838709677) internal successors, (230), 31 states have internal predecessors, (230), 0 states have call successors, (0), 0 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 16:45:53,873 INFO L276 IsEmpty]: Start isEmpty. Operand 28970 states and 36254 transitions. [2022-12-13 16:45:53,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-12-13 16:45:53,874 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:45:53,874 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:45:53,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-13 16:45:54,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d228008e-39c1-49a8-9564-21a53c7e5027/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:45:54,076 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:45:54,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:45:54,077 INFO L85 PathProgramCache]: Analyzing trace with hash 830513014, now seen corresponding path program 1 times [2022-12-13 16:45:54,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:45:54,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211664134] [2022-12-13 16:45:54,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:45:54,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:45:54,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:45:54,215 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:45:54,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:45:54,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211664134] [2022-12-13 16:45:54,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211664134] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:45:54,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:45:54,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:45:54,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807942418] [2022-12-13 16:45:54,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:45:54,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:45:54,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:45:54,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:45:54,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:45:54,217 INFO L87 Difference]: Start difference. First operand 28970 states and 36254 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)