./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label05.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_c41ea486-e20c-4ce9-b96f-ec8102d73bfb/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41ea486-e20c-4ce9-b96f-ec8102d73bfb/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41ea486-e20c-4ce9-b96f-ec8102d73bfb/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41ea486-e20c-4ce9-b96f-ec8102d73bfb/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label05.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41ea486-e20c-4ce9-b96f-ec8102d73bfb/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41ea486-e20c-4ce9-b96f-ec8102d73bfb/bin/uautomizer-ug76WZFUDN --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 058bf7bb7159fc58d1639895d555a49cdf382897b3dae93686af695cfade8af2 --- 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-6b4ec56 [2022-11-20 11:38:11,184 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:38:11,187 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:38:11,232 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:38:11,234 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:38:11,238 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:38:11,241 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:38:11,244 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:38:11,246 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:38:11,252 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:38:11,254 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:38:11,257 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:38:11,258 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:38:11,261 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:38:11,262 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:38:11,265 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:38:11,267 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:38:11,269 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:38:11,270 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:38:11,278 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:38:11,279 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:38:11,282 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:38:11,285 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:38:11,286 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:38:11,296 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:38:11,297 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:38:11,298 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:38:11,300 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:38:11,301 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:38:11,302 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:38:11,302 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:38:11,303 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:38:11,305 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:38:11,306 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:38:11,309 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:38:11,309 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:38:11,310 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:38:11,311 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:38:11,311 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:38:11,313 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:38:11,313 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:38:11,314 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41ea486-e20c-4ce9-b96f-ec8102d73bfb/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:38:11,357 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:38:11,357 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:38:11,358 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:38:11,359 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:38:11,360 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:38:11,361 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:38:11,361 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:38:11,362 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:38:11,362 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:38:11,362 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:38:11,364 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:38:11,364 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:38:11,364 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:38:11,365 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:38:11,365 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:38:11,365 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:38:11,366 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:38:11,366 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:38:11,366 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:38:11,367 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:38:11,367 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:38:11,367 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:38:11,368 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:38:11,368 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:38:11,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:38:11,369 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:38:11,369 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:38:11,369 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:38:11,369 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:38:11,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:38:11,370 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:38:11,370 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:38:11,371 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:38:11,371 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41ea486-e20c-4ce9-b96f-ec8102d73bfb/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41ea486-e20c-4ce9-b96f-ec8102d73bfb/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 058bf7bb7159fc58d1639895d555a49cdf382897b3dae93686af695cfade8af2 [2022-11-20 11:38:11,731 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:38:11,771 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:38:11,774 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:38:11,775 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:38:11,776 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:38:11,777 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41ea486-e20c-4ce9-b96f-ec8102d73bfb/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label05.c [2022-11-20 11:38:15,149 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:38:15,816 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:38:15,817 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41ea486-e20c-4ce9-b96f-ec8102d73bfb/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label05.c [2022-11-20 11:38:15,853 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41ea486-e20c-4ce9-b96f-ec8102d73bfb/bin/uautomizer-ug76WZFUDN/data/4673f8a0f/9ca487559ae04ef38bfbbba58f8c1bcd/FLAG789ea24d5 [2022-11-20 11:38:15,874 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41ea486-e20c-4ce9-b96f-ec8102d73bfb/bin/uautomizer-ug76WZFUDN/data/4673f8a0f/9ca487559ae04ef38bfbbba58f8c1bcd [2022-11-20 11:38:15,878 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:38:15,881 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:38:15,884 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:38:15,884 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:38:15,888 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:38:15,889 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:38:15" (1/1) ... [2022-11-20 11:38:15,891 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@708b65ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:15, skipping insertion in model container [2022-11-20 11:38:15,891 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:38:15" (1/1) ... [2022-11-20 11:38:15,900 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:38:16,074 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:38:16,661 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_c41ea486-e20c-4ce9-b96f-ec8102d73bfb/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label05.c[20454,20467] [2022-11-20 11:38:16,733 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_c41ea486-e20c-4ce9-b96f-ec8102d73bfb/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label05.c[27390,27403] [2022-11-20 11:38:17,783 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:38:17,799 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:38:17,879 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_c41ea486-e20c-4ce9-b96f-ec8102d73bfb/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label05.c[20454,20467] [2022-11-20 11:38:17,896 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_c41ea486-e20c-4ce9-b96f-ec8102d73bfb/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label05.c[27390,27403] [2022-11-20 11:38:18,565 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:38:18,604 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:38:18,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:18 WrapperNode [2022-11-20 11:38:18,605 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:38:18,607 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:38:18,607 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:38:18,607 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:38:18,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:18" (1/1) ... [2022-11-20 11:38:18,694 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:18" (1/1) ... [2022-11-20 11:38:19,171 INFO L138 Inliner]: procedures = 39, calls = 24, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 5180 [2022-11-20 11:38:19,171 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:38:19,173 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:38:19,173 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:38:19,173 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:38:19,184 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:18" (1/1) ... [2022-11-20 11:38:19,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:18" (1/1) ... [2022-11-20 11:38:19,233 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:18" (1/1) ... [2022-11-20 11:38:19,233 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:18" (1/1) ... [2022-11-20 11:38:19,482 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:18" (1/1) ... [2022-11-20 11:38:19,518 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:18" (1/1) ... [2022-11-20 11:38:19,535 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:18" (1/1) ... [2022-11-20 11:38:19,555 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:18" (1/1) ... [2022-11-20 11:38:19,767 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:38:19,770 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:38:19,770 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:38:19,770 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:38:19,773 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:18" (1/1) ... [2022-11-20 11:38:19,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:38:19,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41ea486-e20c-4ce9-b96f-ec8102d73bfb/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:38:19,855 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41ea486-e20c-4ce9-b96f-ec8102d73bfb/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:38:19,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41ea486-e20c-4ce9-b96f-ec8102d73bfb/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:38:19,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:38:19,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:38:19,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:38:19,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:38:20,211 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:38:20,214 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:38:26,729 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:38:26,745 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:38:26,745 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 11:38:26,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:38:26 BoogieIcfgContainer [2022-11-20 11:38:26,749 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:38:26,753 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:38:26,753 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:38:26,757 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:38:26,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:38:15" (1/3) ... [2022-11-20 11:38:26,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bd0c361 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:38:26, skipping insertion in model container [2022-11-20 11:38:26,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:18" (2/3) ... [2022-11-20 11:38:26,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bd0c361 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:38:26, skipping insertion in model container [2022-11-20 11:38:26,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:38:26" (3/3) ... [2022-11-20 11:38:26,765 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label05.c [2022-11-20 11:38:26,790 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:38:26,790 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-20 11:38:26,897 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:38:26,906 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;@3bd1aea3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:38:26,907 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-20 11:38:26,917 INFO L276 IsEmpty]: Start isEmpty. Operand has 932 states, 929 states have (on average 1.9031216361679224) internal successors, (1768), 931 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:38:26,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-20 11:38:26,928 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:38:26,929 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] [2022-11-20 11:38:26,930 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:38:26,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:38:26,936 INFO L85 PathProgramCache]: Analyzing trace with hash -28928260, now seen corresponding path program 1 times [2022-11-20 11:38:26,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:38:26,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895425176] [2022-11-20 11:38:26,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:38:26,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:38:27,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:27,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:38:27,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:38:27,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895425176] [2022-11-20 11:38:27,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895425176] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:38:27,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:38:27,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:38:27,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799193059] [2022-11-20 11:38:27,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:38:27,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 11:38:27,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:38:27,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 11:38:27,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:38:27,412 INFO L87 Difference]: Start difference. First operand has 932 states, 929 states have (on average 1.9031216361679224) internal successors, (1768), 931 states have internal predecessors, (1768), 0 states have call successors, (0), 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 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:38:27,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:38:27,529 INFO L93 Difference]: Finished difference Result 1806 states and 3426 transitions. [2022-11-20 11:38:27,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 11:38:27,540 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2022-11-20 11:38:27,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:38:27,565 INFO L225 Difference]: With dead ends: 1806 [2022-11-20 11:38:27,565 INFO L226 Difference]: Without dead ends: 866 [2022-11-20 11:38:27,572 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 [2022-11-20 11:38:27,576 INFO L413 NwaCegarLoop]: 1699 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, 1699 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 [2022-11-20 11:38:27,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1699 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:38:27,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2022-11-20 11:38:27,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 866. [2022-11-20 11:38:27,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 864 states have (on average 1.8923611111111112) internal successors, (1635), 865 states have internal predecessors, (1635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:38:27,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 1635 transitions. [2022-11-20 11:38:27,675 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 1635 transitions. Word has length 28 [2022-11-20 11:38:27,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:38:27,676 INFO L495 AbstractCegarLoop]: Abstraction has 866 states and 1635 transitions. [2022-11-20 11:38:27,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:38:27,677 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 1635 transitions. [2022-11-20 11:38:27,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-20 11:38:27,678 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:38:27,678 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] [2022-11-20 11:38:27,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:38:27,679 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:38:27,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:38:27,680 INFO L85 PathProgramCache]: Analyzing trace with hash 189926458, now seen corresponding path program 1 times [2022-11-20 11:38:27,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:38:27,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936515416] [2022-11-20 11:38:27,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:38:27,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:38:27,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:27,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:38:27,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:38:27,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936515416] [2022-11-20 11:38:27,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936515416] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:38:27,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:38:27,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:38:27,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478870945] [2022-11-20 11:38:27,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:38:27,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:38:27,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:38:27,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:38:27,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:38:27,919 INFO L87 Difference]: Start difference. First operand 866 states and 1635 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:38:28,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:38:28,187 INFO L93 Difference]: Finished difference Result 926 states and 1729 transitions. [2022-11-20 11:38:28,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:38:28,188 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2022-11-20 11:38:28,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:38:28,194 INFO L225 Difference]: With dead ends: 926 [2022-11-20 11:38:28,195 INFO L226 Difference]: Without dead ends: 866 [2022-11-20 11:38:28,198 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 [2022-11-20 11:38:28,200 INFO L413 NwaCegarLoop]: 1633 mSDtfsCounter, 3 mSDsluCounter, 4846 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6479 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:38:28,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6479 Invalid, 60 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [49 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:38:28,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2022-11-20 11:38:28,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 866. [2022-11-20 11:38:28,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 864 states have (on average 1.8344907407407407) internal successors, (1585), 865 states have internal predecessors, (1585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:38:28,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 1585 transitions. [2022-11-20 11:38:28,264 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 1585 transitions. Word has length 28 [2022-11-20 11:38:28,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:38:28,264 INFO L495 AbstractCegarLoop]: Abstraction has 866 states and 1585 transitions. [2022-11-20 11:38:28,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:38:28,266 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 1585 transitions. [2022-11-20 11:38:28,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-20 11:38:28,277 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:38:28,278 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:38:28,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:38:28,278 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:38:28,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:38:28,286 INFO L85 PathProgramCache]: Analyzing trace with hash -70736731, now seen corresponding path program 1 times [2022-11-20 11:38:28,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:38:28,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505415261] [2022-11-20 11:38:28,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:38:28,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:38:28,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:28,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:38:28,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:38:28,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505415261] [2022-11-20 11:38:28,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505415261] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:38:28,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:38:28,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:38:28,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822205839] [2022-11-20 11:38:28,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:38:28,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:38:28,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:38:28,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:38:28,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:38:28,621 INFO L87 Difference]: Start difference. First operand 866 states and 1585 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:38:38,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:38:38,545 INFO L93 Difference]: Finished difference Result 3121 states and 5894 transitions. [2022-11-20 11:38:38,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:38:38,546 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2022-11-20 11:38:38,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:38:38,557 INFO L225 Difference]: With dead ends: 3121 [2022-11-20 11:38:38,557 INFO L226 Difference]: Without dead ends: 2368 [2022-11-20 11:38:38,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:38:38,560 INFO L413 NwaCegarLoop]: 821 mSDtfsCounter, 2485 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5354 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2485 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 6507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:38:38,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2485 Valid, 839 Invalid, 6507 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1153 Valid, 5354 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2022-11-20 11:38:38,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2368 states. [2022-11-20 11:38:38,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2368 to 2368. [2022-11-20 11:38:38,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2368 states, 2366 states have (on average 1.5633981403212172) internal successors, (3699), 2367 states have internal predecessors, (3699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:38:38,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2368 states to 2368 states and 3699 transitions. [2022-11-20 11:38:38,624 INFO L78 Accepts]: Start accepts. Automaton has 2368 states and 3699 transitions. Word has length 60 [2022-11-20 11:38:38,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:38:38,625 INFO L495 AbstractCegarLoop]: Abstraction has 2368 states and 3699 transitions. [2022-11-20 11:38:38,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:38:38,626 INFO L276 IsEmpty]: Start isEmpty. Operand 2368 states and 3699 transitions. [2022-11-20 11:38:38,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-20 11:38:38,627 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:38:38,628 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:38:38,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:38:38,628 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:38:38,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:38:38,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1109970983, now seen corresponding path program 1 times [2022-11-20 11:38:38,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:38:38,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173189775] [2022-11-20 11:38:38,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:38:38,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:38:38,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:39,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:38:39,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:38:39,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173189775] [2022-11-20 11:38:39,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173189775] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:38:39,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:38:39,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 11:38:39,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173497396] [2022-11-20 11:38:39,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:38:39,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 11:38:39,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:38:39,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 11:38:39,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:38:39,069 INFO L87 Difference]: Start difference. First operand 2368 states and 3699 transitions. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:38:39,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:38:39,598 INFO L93 Difference]: Finished difference Result 3152 states and 4959 transitions. [2022-11-20 11:38:39,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 11:38:39,599 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 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 [2022-11-20 11:38:39,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:38:39,613 INFO L225 Difference]: With dead ends: 3152 [2022-11-20 11:38:39,614 INFO L226 Difference]: Without dead ends: 3096 [2022-11-20 11:38:39,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:38:39,628 INFO L413 NwaCegarLoop]: 1579 mSDtfsCounter, 11614 mSDsluCounter, 2746 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11614 SdHoareTripleChecker+Valid, 4325 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:38:39,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11614 Valid, 4325 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:38:39,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3096 states. [2022-11-20 11:38:39,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3096 to 2422. [2022-11-20 11:38:39,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2422 states, 2420 states have (on average 1.5644628099173554) internal successors, (3786), 2421 states have internal predecessors, (3786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:38:39,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2422 states to 2422 states and 3786 transitions. [2022-11-20 11:38:39,731 INFO L78 Accepts]: Start accepts. Automaton has 2422 states and 3786 transitions. Word has length 77 [2022-11-20 11:38:39,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:38:39,733 INFO L495 AbstractCegarLoop]: Abstraction has 2422 states and 3786 transitions. [2022-11-20 11:38:39,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:38:39,734 INFO L276 IsEmpty]: Start isEmpty. Operand 2422 states and 3786 transitions. [2022-11-20 11:38:39,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-20 11:38:39,736 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:38:39,737 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:38:39,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:38:39,737 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:38:39,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:38:39,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1349050793, now seen corresponding path program 1 times [2022-11-20 11:38:39,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:38:39,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622009611] [2022-11-20 11:38:39,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:38:39,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:38:39,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:39,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:38:39,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:38:39,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622009611] [2022-11-20 11:38:39,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622009611] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:38:39,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:38:39,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:38:39,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183477376] [2022-11-20 11:38:39,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:38:39,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:38:39,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:38:39,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:38:39,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:38:39,911 INFO L87 Difference]: Start difference. First operand 2422 states and 3786 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) [2022-11-20 11:38:39,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:38:39,989 INFO L93 Difference]: Finished difference Result 2631 states and 4121 transitions. [2022-11-20 11:38:39,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:38:39,990 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 [2022-11-20 11:38:39,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:38:40,000 INFO L225 Difference]: With dead ends: 2631 [2022-11-20 11:38:40,001 INFO L226 Difference]: Without dead ends: 2521 [2022-11-20 11:38:40,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:38:40,005 INFO L413 NwaCegarLoop]: 1581 mSDtfsCounter, 1500 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1500 SdHoareTripleChecker+Valid, 1664 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:38:40,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1500 Valid, 1664 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:38:40,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2521 states. [2022-11-20 11:38:40,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2521 to 2517. [2022-11-20 11:38:40,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2517 states, 2515 states have (on average 1.5650099403578528) internal successors, (3936), 2516 states have internal predecessors, (3936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:38:40,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2517 states to 2517 states and 3936 transitions. [2022-11-20 11:38:40,092 INFO L78 Accepts]: Start accepts. Automaton has 2517 states and 3936 transitions. Word has length 79 [2022-11-20 11:38:40,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:38:40,097 INFO L495 AbstractCegarLoop]: Abstraction has 2517 states and 3936 transitions. [2022-11-20 11:38:40,097 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) [2022-11-20 11:38:40,097 INFO L276 IsEmpty]: Start isEmpty. Operand 2517 states and 3936 transitions. [2022-11-20 11:38:40,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-20 11:38:40,099 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:38:40,099 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:38:40,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:38:40,099 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:38:40,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:38:40,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1415544305, now seen corresponding path program 1 times [2022-11-20 11:38:40,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:38:40,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782322045] [2022-11-20 11:38:40,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:38:40,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:38:40,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:40,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:38:40,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:38:40,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782322045] [2022-11-20 11:38:40,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782322045] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:38:40,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:38:40,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 11:38:40,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552323910] [2022-11-20 11:38:40,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:38:40,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 11:38:40,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:38:40,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 11:38:40,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:38:40,684 INFO L87 Difference]: Start difference. First operand 2517 states and 3936 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 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) [2022-11-20 11:38:41,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:38:41,200 INFO L93 Difference]: Finished difference Result 2724 states and 4264 transitions. [2022-11-20 11:38:41,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:38:41,201 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 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 [2022-11-20 11:38:41,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:38:41,212 INFO L225 Difference]: With dead ends: 2724 [2022-11-20 11:38:41,212 INFO L226 Difference]: Without dead ends: 2519 [2022-11-20 11:38:41,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:38:41,215 INFO L413 NwaCegarLoop]: 1577 mSDtfsCounter, 3334 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3334 SdHoareTripleChecker+Valid, 2114 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:38:41,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3334 Valid, 2114 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:38:41,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2519 states. [2022-11-20 11:38:41,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2519 to 2517. [2022-11-20 11:38:41,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2517 states, 2515 states have (on average 1.5642147117296223) internal successors, (3934), 2516 states have internal predecessors, (3934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:38:41,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2517 states to 2517 states and 3934 transitions. [2022-11-20 11:38:41,317 INFO L78 Accepts]: Start accepts. Automaton has 2517 states and 3934 transitions. Word has length 79 [2022-11-20 11:38:41,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:38:41,317 INFO L495 AbstractCegarLoop]: Abstraction has 2517 states and 3934 transitions. [2022-11-20 11:38:41,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 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) [2022-11-20 11:38:41,318 INFO L276 IsEmpty]: Start isEmpty. Operand 2517 states and 3934 transitions. [2022-11-20 11:38:41,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-20 11:38:41,319 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:38:41,319 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:38:41,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:38:41,320 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:38:41,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:38:41,320 INFO L85 PathProgramCache]: Analyzing trace with hash 517477589, now seen corresponding path program 1 times [2022-11-20 11:38:41,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:38:41,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473596362] [2022-11-20 11:38:41,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:38:41,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:38:41,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:41,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:38:41,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:38:41,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473596362] [2022-11-20 11:38:41,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473596362] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:38:41,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:38:41,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 11:38:41,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669507474] [2022-11-20 11:38:41,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:38:41,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:38:41,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:38:41,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:38:41,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:38:41,727 INFO L87 Difference]: Start difference. First operand 2517 states and 3934 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 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) [2022-11-20 11:38:41,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:38:41,974 INFO L93 Difference]: Finished difference Result 2718 states and 4248 transitions. [2022-11-20 11:38:41,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:38:41,975 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 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 [2022-11-20 11:38:41,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:38:41,984 INFO L225 Difference]: With dead ends: 2718 [2022-11-20 11:38:41,984 INFO L226 Difference]: Without dead ends: 2716 [2022-11-20 11:38:41,985 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 [2022-11-20 11:38:41,988 INFO L413 NwaCegarLoop]: 1663 mSDtfsCounter, 532 mSDsluCounter, 9218 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 10881 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 [2022-11-20 11:38:41,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 10881 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:38:41,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2716 states. [2022-11-20 11:38:42,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2716 to 2523. [2022-11-20 11:38:42,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2523 states, 2521 states have (on average 1.562475208250694) internal successors, (3939), 2522 states have internal predecessors, (3939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:38:42,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2523 states to 2523 states and 3939 transitions. [2022-11-20 11:38:42,140 INFO L78 Accepts]: Start accepts. Automaton has 2523 states and 3939 transitions. Word has length 80 [2022-11-20 11:38:42,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:38:42,141 INFO L495 AbstractCegarLoop]: Abstraction has 2523 states and 3939 transitions. [2022-11-20 11:38:42,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 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) [2022-11-20 11:38:42,141 INFO L276 IsEmpty]: Start isEmpty. Operand 2523 states and 3939 transitions. [2022-11-20 11:38:42,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-20 11:38:42,149 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:38:42,149 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:38:42,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:38:42,149 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:38:42,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:38:42,150 INFO L85 PathProgramCache]: Analyzing trace with hash -927531695, now seen corresponding path program 1 times [2022-11-20 11:38:42,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:38:42,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482198092] [2022-11-20 11:38:42,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:38:42,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:38:42,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:42,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:38:42,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:38:42,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482198092] [2022-11-20 11:38:42,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482198092] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:38:42,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:38:42,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:38:42,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720436216] [2022-11-20 11:38:42,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:38:42,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:38:42,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:38:42,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:38:42,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:38:42,237 INFO L87 Difference]: Start difference. First operand 2523 states and 3939 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:38:42,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:38:42,356 INFO L93 Difference]: Finished difference Result 2929 states and 4571 transitions. [2022-11-20 11:38:42,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:38:42,357 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-11-20 11:38:42,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:38:42,368 INFO L225 Difference]: With dead ends: 2929 [2022-11-20 11:38:42,368 INFO L226 Difference]: Without dead ends: 2718 [2022-11-20 11:38:42,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:38:42,372 INFO L413 NwaCegarLoop]: 1652 mSDtfsCounter, 1517 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1517 SdHoareTripleChecker+Valid, 1747 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 [2022-11-20 11:38:42,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1517 Valid, 1747 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:38:42,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2718 states. [2022-11-20 11:38:42,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2718 to 2716. [2022-11-20 11:38:42,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2716 states, 2714 states have (on average 1.5607958732498157) internal successors, (4236), 2715 states have internal predecessors, (4236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:38:42,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2716 states to 2716 states and 4236 transitions. [2022-11-20 11:38:42,506 INFO L78 Accepts]: Start accepts. Automaton has 2716 states and 4236 transitions. Word has length 81 [2022-11-20 11:38:42,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:38:42,506 INFO L495 AbstractCegarLoop]: Abstraction has 2716 states and 4236 transitions. [2022-11-20 11:38:42,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:38:42,507 INFO L276 IsEmpty]: Start isEmpty. Operand 2716 states and 4236 transitions. [2022-11-20 11:38:42,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-20 11:38:42,509 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:38:42,510 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:38:42,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:38:42,510 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:38:42,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:38:42,511 INFO L85 PathProgramCache]: Analyzing trace with hash -764617135, now seen corresponding path program 1 times [2022-11-20 11:38:42,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:38:42,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478314724] [2022-11-20 11:38:42,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:38:42,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:38:42,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:42,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:38:42,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:38:42,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478314724] [2022-11-20 11:38:42,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478314724] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:38:42,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:38:42,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:38:42,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554938738] [2022-11-20 11:38:42,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:38:42,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:38:42,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:38:42,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:38:42,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:38:42,609 INFO L87 Difference]: Start difference. First operand 2716 states and 4236 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:38:42,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:38:42,785 INFO L93 Difference]: Finished difference Result 3492 states and 5434 transitions. [2022-11-20 11:38:42,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:38:42,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-11-20 11:38:42,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:38:42,798 INFO L225 Difference]: With dead ends: 3492 [2022-11-20 11:38:42,798 INFO L226 Difference]: Without dead ends: 3088 [2022-11-20 11:38:42,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:38:42,803 INFO L413 NwaCegarLoop]: 1650 mSDtfsCounter, 1515 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1515 SdHoareTripleChecker+Valid, 1749 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 [2022-11-20 11:38:42,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1515 Valid, 1749 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:38:42,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3088 states. [2022-11-20 11:38:43,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3088 to 3086. [2022-11-20 11:38:43,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3086 states, 3084 states have (on average 1.5557717250324254) internal successors, (4798), 3085 states have internal predecessors, (4798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:38:43,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3086 states to 3086 states and 4798 transitions. [2022-11-20 11:38:43,081 INFO L78 Accepts]: Start accepts. Automaton has 3086 states and 4798 transitions. Word has length 81 [2022-11-20 11:38:43,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:38:43,081 INFO L495 AbstractCegarLoop]: Abstraction has 3086 states and 4798 transitions. [2022-11-20 11:38:43,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:38:43,082 INFO L276 IsEmpty]: Start isEmpty. Operand 3086 states and 4798 transitions. [2022-11-20 11:38:43,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-20 11:38:43,083 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:38:43,083 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:38:43,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:38:43,084 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:38:43,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:38:43,090 INFO L85 PathProgramCache]: Analyzing trace with hash 737501265, now seen corresponding path program 1 times [2022-11-20 11:38:43,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:38:43,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799814098] [2022-11-20 11:38:43,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:38:43,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:38:43,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:43,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:38:43,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:38:43,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799814098] [2022-11-20 11:38:43,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799814098] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:38:43,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:38:43,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:38:43,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304030318] [2022-11-20 11:38:43,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:38:43,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:38:43,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:38:43,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:38:43,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:38:43,196 INFO L87 Difference]: Start difference. First operand 3086 states and 4798 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:38:43,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:38:43,565 INFO L93 Difference]: Finished difference Result 4570 states and 7064 transitions. [2022-11-20 11:38:43,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:38:43,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-11-20 11:38:43,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:38:43,591 INFO L225 Difference]: With dead ends: 4570 [2022-11-20 11:38:43,597 INFO L226 Difference]: Without dead ends: 3796 [2022-11-20 11:38:43,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:38:43,600 INFO L413 NwaCegarLoop]: 1638 mSDtfsCounter, 1511 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1511 SdHoareTripleChecker+Valid, 1745 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 [2022-11-20 11:38:43,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1511 Valid, 1745 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:38:43,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3796 states. [2022-11-20 11:38:44,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3796 to 3794. [2022-11-20 11:38:44,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3794 states, 3792 states have (on average 1.544831223628692) internal successors, (5858), 3793 states have internal predecessors, (5858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:38:44,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3794 states to 3794 states and 5858 transitions. [2022-11-20 11:38:44,044 INFO L78 Accepts]: Start accepts. Automaton has 3794 states and 5858 transitions. Word has length 81 [2022-11-20 11:38:44,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:38:44,044 INFO L495 AbstractCegarLoop]: Abstraction has 3794 states and 5858 transitions. [2022-11-20 11:38:44,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:38:44,045 INFO L276 IsEmpty]: Start isEmpty. Operand 3794 states and 5858 transitions. [2022-11-20 11:38:44,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-20 11:38:44,046 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:38:44,046 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:38:44,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 11:38:44,047 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:38:44,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:38:44,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1477967535, now seen corresponding path program 1 times [2022-11-20 11:38:44,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:38:44,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123267440] [2022-11-20 11:38:44,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:38:44,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:38:44,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:44,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:38:44,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:38:44,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123267440] [2022-11-20 11:38:44,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123267440] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:38:44,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:38:44,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:38:44,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187911642] [2022-11-20 11:38:44,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:38:44,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:38:44,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:38:44,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:38:44,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:38:44,129 INFO L87 Difference]: Start difference. First operand 3794 states and 5858 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:38:44,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:38:44,734 INFO L93 Difference]: Finished difference Result 6630 states and 10132 transitions. [2022-11-20 11:38:44,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:38:44,735 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-11-20 11:38:44,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:38:44,748 INFO L225 Difference]: With dead ends: 6630 [2022-11-20 11:38:44,748 INFO L226 Difference]: Without dead ends: 5148 [2022-11-20 11:38:44,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:38:44,753 INFO L413 NwaCegarLoop]: 1636 mSDtfsCounter, 1509 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1509 SdHoareTripleChecker+Valid, 1747 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 [2022-11-20 11:38:44,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1509 Valid, 1747 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:38:44,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5148 states. [2022-11-20 11:38:45,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5148 to 5146. [2022-11-20 11:38:45,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5146 states, 5144 states have (on average 1.526049766718507) internal successors, (7850), 5145 states have internal predecessors, (7850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:38:45,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5146 states to 5146 states and 7850 transitions. [2022-11-20 11:38:45,501 INFO L78 Accepts]: Start accepts. Automaton has 5146 states and 7850 transitions. Word has length 81 [2022-11-20 11:38:45,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:38:45,502 INFO L495 AbstractCegarLoop]: Abstraction has 5146 states and 7850 transitions. [2022-11-20 11:38:45,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:38:45,502 INFO L276 IsEmpty]: Start isEmpty. Operand 5146 states and 7850 transitions. [2022-11-20 11:38:45,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-20 11:38:45,503 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:38:45,504 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:38:45,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 11:38:45,504 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:38:45,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:38:45,505 INFO L85 PathProgramCache]: Analyzing trace with hash 302965329, now seen corresponding path program 1 times [2022-11-20 11:38:45,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:38:45,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731442748] [2022-11-20 11:38:45,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:38:45,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:38:45,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:45,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:38:45,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:38:45,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731442748] [2022-11-20 11:38:45,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731442748] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:38:45,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:38:45,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:38:45,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354571780] [2022-11-20 11:38:45,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:38:45,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:38:45,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:38:45,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:38:45,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:38:45,595 INFO L87 Difference]: Start difference. First operand 5146 states and 7850 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:38:47,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:38:47,086 INFO L93 Difference]: Finished difference Result 10558 states and 15884 transitions. [2022-11-20 11:38:47,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:38:47,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-11-20 11:38:47,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:38:47,113 INFO L225 Difference]: With dead ends: 10558 [2022-11-20 11:38:47,114 INFO L226 Difference]: Without dead ends: 7724 [2022-11-20 11:38:47,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:38:47,120 INFO L413 NwaCegarLoop]: 1634 mSDtfsCounter, 1507 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 1749 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 [2022-11-20 11:38:47,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1507 Valid, 1749 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:38:47,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7724 states. [2022-11-20 11:38:48,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7724 to 7722. [2022-11-20 11:38:48,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7722 states, 7720 states have (on average 1.499740932642487) internal successors, (11578), 7721 states have internal predecessors, (11578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:38:48,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7722 states to 7722 states and 11578 transitions. [2022-11-20 11:38:48,136 INFO L78 Accepts]: Start accepts. Automaton has 7722 states and 11578 transitions. Word has length 81 [2022-11-20 11:38:48,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:38:48,137 INFO L495 AbstractCegarLoop]: Abstraction has 7722 states and 11578 transitions. [2022-11-20 11:38:48,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:38:48,138 INFO L276 IsEmpty]: Start isEmpty. Operand 7722 states and 11578 transitions. [2022-11-20 11:38:48,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-20 11:38:48,139 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:38:48,140 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:38:48,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 11:38:48,140 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:38:48,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:38:48,141 INFO L85 PathProgramCache]: Analyzing trace with hash -500760751, now seen corresponding path program 1 times [2022-11-20 11:38:48,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:38:48,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801563436] [2022-11-20 11:38:48,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:38:48,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:38:48,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:48,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:38:48,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:38:48,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801563436] [2022-11-20 11:38:48,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801563436] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:38:48,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:38:48,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:38:48,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320572561] [2022-11-20 11:38:48,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:38:48,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:38:48,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:38:48,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:38:48,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:38:48,227 INFO L87 Difference]: Start difference. First operand 7722 states and 11578 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:38:49,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:38:49,881 INFO L93 Difference]: Finished difference Result 18030 states and 26620 transitions. [2022-11-20 11:38:49,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:38:49,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-11-20 11:38:49,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:38:49,913 INFO L225 Difference]: With dead ends: 18030 [2022-11-20 11:38:49,914 INFO L226 Difference]: Without dead ends: 12620 [2022-11-20 11:38:49,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:38:49,924 INFO L413 NwaCegarLoop]: 1648 mSDtfsCounter, 1513 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 1751 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 [2022-11-20 11:38:49,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1513 Valid, 1751 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:38:49,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12620 states. [2022-11-20 11:38:51,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12620 to 12618. [2022-11-20 11:38:51,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12618 states, 12616 states have (on average 1.4681357006975269) internal successors, (18522), 12617 states have internal predecessors, (18522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:38:51,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12618 states to 12618 states and 18522 transitions. [2022-11-20 11:38:51,885 INFO L78 Accepts]: Start accepts. Automaton has 12618 states and 18522 transitions. Word has length 81 [2022-11-20 11:38:51,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:38:51,885 INFO L495 AbstractCegarLoop]: Abstraction has 12618 states and 18522 transitions. [2022-11-20 11:38:51,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:38:51,886 INFO L276 IsEmpty]: Start isEmpty. Operand 12618 states and 18522 transitions. [2022-11-20 11:38:51,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-20 11:38:51,887 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:38:51,887 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:38:51,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 11:38:51,888 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:38:51,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:38:51,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1125158260, now seen corresponding path program 1 times [2022-11-20 11:38:51,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:38:51,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742571469] [2022-11-20 11:38:51,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:38:51,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:38:51,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:51,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:38:51,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:38:51,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742571469] [2022-11-20 11:38:51,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742571469] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:38:51,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:38:51,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:38:51,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197690191] [2022-11-20 11:38:51,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:38:51,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:38:51,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:38:51,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:38:51,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:38:51,967 INFO L87 Difference]: Start difference. First operand 12618 states and 18522 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:38:55,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:38:55,378 INFO L93 Difference]: Finished difference Result 23377 states and 34272 transitions. [2022-11-20 11:38:55,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:38:55,378 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2022-11-20 11:38:55,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:38:55,420 INFO L225 Difference]: With dead ends: 23377 [2022-11-20 11:38:55,421 INFO L226 Difference]: Without dead ends: 17614 [2022-11-20 11:38:55,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:38:55,433 INFO L413 NwaCegarLoop]: 1657 mSDtfsCounter, 1516 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 1748 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 [2022-11-20 11:38:55,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1516 Valid, 1748 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:38:55,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17614 states. [2022-11-20 11:38:58,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17614 to 17612. [2022-11-20 11:38:58,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17612 states, 17610 states have (on average 1.4553094832481546) internal successors, (25628), 17611 states have internal predecessors, (25628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:38:58,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17612 states to 17612 states and 25628 transitions. [2022-11-20 11:38:58,329 INFO L78 Accepts]: Start accepts. Automaton has 17612 states and 25628 transitions. Word has length 83 [2022-11-20 11:38:58,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:38:58,329 INFO L495 AbstractCegarLoop]: Abstraction has 17612 states and 25628 transitions. [2022-11-20 11:38:58,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:38:58,330 INFO L276 IsEmpty]: Start isEmpty. Operand 17612 states and 25628 transitions. [2022-11-20 11:38:58,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-20 11:38:58,335 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:38:58,336 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:38:58,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 11:38:58,336 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:38:58,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:38:58,337 INFO L85 PathProgramCache]: Analyzing trace with hash -293163275, now seen corresponding path program 1 times [2022-11-20 11:38:58,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:38:58,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996762432] [2022-11-20 11:38:58,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:38:58,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:38:58,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:58,616 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 11:38:58,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:38:58,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996762432] [2022-11-20 11:38:58,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996762432] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:38:58,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:38:58,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 11:38:58,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087951726] [2022-11-20 11:38:58,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:38:58,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 11:38:58,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:38:58,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 11:38:58,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:38:58,620 INFO L87 Difference]: Start difference. First operand 17612 states and 25628 transitions. Second operand has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 9 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:39:18,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:39:18,204 INFO L93 Difference]: Finished difference Result 127836 states and 184100 transitions. [2022-11-20 11:39:18,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:39:18,205 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 9 states have internal predecessors, (101), 0 states have call successors, (0), 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 104 [2022-11-20 11:39:18,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:39:18,480 INFO L225 Difference]: With dead ends: 127836 [2022-11-20 11:39:18,480 INFO L226 Difference]: Without dead ends: 112538 [2022-11-20 11:39:18,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:39:18,516 INFO L413 NwaCegarLoop]: 1675 mSDtfsCounter, 9904 mSDsluCounter, 2770 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9904 SdHoareTripleChecker+Valid, 4445 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:39:18,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9904 Valid, 4445 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:39:18,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112538 states. [2022-11-20 11:39:25,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112538 to 32908. [2022-11-20 11:39:25,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32908 states, 32906 states have (on average 1.4420470430924452) internal successors, (47452), 32907 states have internal predecessors, (47452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:39:25,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32908 states to 32908 states and 47452 transitions. [2022-11-20 11:39:25,621 INFO L78 Accepts]: Start accepts. Automaton has 32908 states and 47452 transitions. Word has length 104 [2022-11-20 11:39:25,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:39:25,622 INFO L495 AbstractCegarLoop]: Abstraction has 32908 states and 47452 transitions. [2022-11-20 11:39:25,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 9 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:39:25,622 INFO L276 IsEmpty]: Start isEmpty. Operand 32908 states and 47452 transitions. [2022-11-20 11:39:25,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-20 11:39:25,628 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:39:25,629 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:39:25,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 11:39:25,629 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:39:25,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:39:25,630 INFO L85 PathProgramCache]: Analyzing trace with hash -130248715, now seen corresponding path program 1 times [2022-11-20 11:39:25,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:39:25,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470081594] [2022-11-20 11:39:25,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:39:25,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:39:25,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:25,904 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:39:25,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:39:25,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470081594] [2022-11-20 11:39:25,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470081594] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:39:25,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:39:25,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 11:39:25,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254854900] [2022-11-20 11:39:25,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:39:25,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 11:39:25,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:39:25,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 11:39:25,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:39:25,910 INFO L87 Difference]: Start difference. First operand 32908 states and 47452 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 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)