./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem11_label46.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d2d41b-fb6b-4397-a0f6-41b2cf0a97b0/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d2d41b-fb6b-4397-a0f6-41b2cf0a97b0/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d2d41b-fb6b-4397-a0f6-41b2cf0a97b0/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d2d41b-fb6b-4397-a0f6-41b2cf0a97b0/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem11_label46.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d2d41b-fb6b-4397-a0f6-41b2cf0a97b0/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d2d41b-fb6b-4397-a0f6-41b2cf0a97b0/bin/uautomizer-J5u9QxTXDZ --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 201cd0b9f7312851770c009ac8fff4b46d270c8816b37eb4df1c49891060a8fb --- 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-dbf71c6-m [2022-10-17 10:29:46,208 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:29:46,212 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:29:46,254 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:29:46,255 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:29:46,256 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:29:46,258 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:29:46,260 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:29:46,263 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:29:46,264 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:29:46,265 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:29:46,267 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:29:46,267 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:29:46,269 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:29:46,270 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:29:46,272 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:29:46,273 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:29:46,274 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:29:46,277 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:29:46,279 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:29:46,282 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:29:46,288 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:29:46,289 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:29:46,290 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:29:46,296 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:29:46,296 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:29:46,297 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:29:46,298 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:29:46,299 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:29:46,300 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:29:46,300 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:29:46,301 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:29:46,302 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:29:46,303 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:29:46,305 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:29:46,305 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:29:46,306 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:29:46,306 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:29:46,307 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:29:46,308 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:29:46,309 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:29:46,310 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d2d41b-fb6b-4397-a0f6-41b2cf0a97b0/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:29:46,336 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:29:46,336 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:29:46,337 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:29:46,337 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:29:46,337 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:29:46,337 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:29:46,338 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:29:46,338 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:29:46,338 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:29:46,339 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:29:46,339 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:29:46,339 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:29:46,339 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:29:46,339 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:29:46,340 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:29:46,340 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:29:46,340 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:29:46,340 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:29:46,340 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:29:46,341 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:29:46,341 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:29:46,341 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:29:46,341 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:29:46,342 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:29:46,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:29:46,342 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:29:46,342 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:29:46,342 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:29:46,343 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:29:46,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:29:46,343 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:29:46,343 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:29:46,343 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:29:46,344 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_79d2d41b-fb6b-4397-a0f6-41b2cf0a97b0/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d2d41b-fb6b-4397-a0f6-41b2cf0a97b0/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 201cd0b9f7312851770c009ac8fff4b46d270c8816b37eb4df1c49891060a8fb [2022-10-17 10:29:46,580 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:29:46,612 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:29:46,615 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:29:46,616 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:29:46,617 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:29:46,619 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d2d41b-fb6b-4397-a0f6-41b2cf0a97b0/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/eca-rers2012/Problem11_label46.c [2022-10-17 10:29:46,707 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d2d41b-fb6b-4397-a0f6-41b2cf0a97b0/bin/uautomizer-J5u9QxTXDZ/data/a98ec5435/bc8927fa9f7b4d1abafb21caf5b8bbe6/FLAGce1a51d8c [2022-10-17 10:29:47,398 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:29:47,399 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d2d41b-fb6b-4397-a0f6-41b2cf0a97b0/sv-benchmarks/c/eca-rers2012/Problem11_label46.c [2022-10-17 10:29:47,419 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d2d41b-fb6b-4397-a0f6-41b2cf0a97b0/bin/uautomizer-J5u9QxTXDZ/data/a98ec5435/bc8927fa9f7b4d1abafb21caf5b8bbe6/FLAGce1a51d8c [2022-10-17 10:29:47,624 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d2d41b-fb6b-4397-a0f6-41b2cf0a97b0/bin/uautomizer-J5u9QxTXDZ/data/a98ec5435/bc8927fa9f7b4d1abafb21caf5b8bbe6 [2022-10-17 10:29:47,626 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:29:47,631 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:29:47,634 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:29:47,634 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:29:47,638 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:29:47,639 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:29:47" (1/1) ... [2022-10-17 10:29:47,640 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49aecedc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:47, skipping insertion in model container [2022-10-17 10:29:47,640 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:29:47" (1/1) ... [2022-10-17 10:29:47,647 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:29:47,720 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:29:48,041 WARN L230 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_79d2d41b-fb6b-4397-a0f6-41b2cf0a97b0/sv-benchmarks/c/eca-rers2012/Problem11_label46.c[8949,8962] [2022-10-17 10:29:48,304 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:29:48,320 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:29:48,361 WARN L230 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_79d2d41b-fb6b-4397-a0f6-41b2cf0a97b0/sv-benchmarks/c/eca-rers2012/Problem11_label46.c[8949,8962] [2022-10-17 10:29:48,516 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:29:48,576 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:29:48,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:48 WrapperNode [2022-10-17 10:29:48,577 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:29:48,579 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:29:48,579 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:29:48,579 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:29:48,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:48" (1/1) ... [2022-10-17 10:29:48,663 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:48" (1/1) ... [2022-10-17 10:29:48,782 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 999 [2022-10-17 10:29:48,783 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:29:48,784 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:29:48,784 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:29:48,784 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:29:48,794 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:48" (1/1) ... [2022-10-17 10:29:48,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:48" (1/1) ... [2022-10-17 10:29:48,810 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:48" (1/1) ... [2022-10-17 10:29:48,811 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:48" (1/1) ... [2022-10-17 10:29:48,870 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:48" (1/1) ... [2022-10-17 10:29:48,898 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:48" (1/1) ... [2022-10-17 10:29:48,909 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:48" (1/1) ... [2022-10-17 10:29:48,921 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:48" (1/1) ... [2022-10-17 10:29:48,934 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:29:48,935 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:29:48,936 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:29:48,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:29:48,938 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:48" (1/1) ... [2022-10-17 10:29:48,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:29:48,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d2d41b-fb6b-4397-a0f6-41b2cf0a97b0/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:29:48,980 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d2d41b-fb6b-4397-a0f6-41b2cf0a97b0/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:29:48,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d2d41b-fb6b-4397-a0f6-41b2cf0a97b0/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:29:49,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:29:49,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:29:49,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:29:49,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:29:49,097 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:29:49,100 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:29:51,030 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:29:51,041 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:29:51,041 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 10:29:51,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:29:51 BoogieIcfgContainer [2022-10-17 10:29:51,044 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:29:51,046 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:29:51,046 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:29:51,050 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:29:51,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:29:47" (1/3) ... [2022-10-17 10:29:51,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51e6fcb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:29:51, skipping insertion in model container [2022-10-17 10:29:51,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:48" (2/3) ... [2022-10-17 10:29:51,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51e6fcb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:29:51, skipping insertion in model container [2022-10-17 10:29:51,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:29:51" (3/3) ... [2022-10-17 10:29:51,053 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label46.c [2022-10-17 10:29:51,073 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:29:51,073 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:29:51,147 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:29:51,155 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;@2172dd5d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:29:51,155 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:29:51,161 INFO L276 IsEmpty]: Start isEmpty. Operand has 283 states, 281 states have (on average 1.7153024911032029) internal successors, (482), 282 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:51,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-10-17 10:29:51,171 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:29:51,172 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] [2022-10-17 10:29:51,173 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:29:51,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:29:51,179 INFO L85 PathProgramCache]: Analyzing trace with hash 531730986, now seen corresponding path program 1 times [2022-10-17 10:29:51,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:29:51,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526511306] [2022-10-17 10:29:51,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:29:51,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:29:51,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:51,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:29:51,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:29:51,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526511306] [2022-10-17 10:29:51,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526511306] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:29:51,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:29:51,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:29:51,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042398487] [2022-10-17 10:29:51,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:29:51,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:29:51,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:29:51,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:29:51,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:29:51,787 INFO L87 Difference]: Start difference. First operand has 283 states, 281 states have (on average 1.7153024911032029) internal successors, (482), 282 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:53,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:29:53,315 INFO L93 Difference]: Finished difference Result 776 states and 1363 transitions. [2022-10-17 10:29:53,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:29:53,318 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2022-10-17 10:29:53,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:29:53,334 INFO L225 Difference]: With dead ends: 776 [2022-10-17 10:29:53,334 INFO L226 Difference]: Without dead ends: 413 [2022-10-17 10:29:53,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:29:53,343 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 165 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-10-17 10:29:53,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 196 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-10-17 10:29:53,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2022-10-17 10:29:53,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 411. [2022-10-17 10:29:53,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 410 states have (on average 1.4585365853658536) internal successors, (598), 410 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:53,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 598 transitions. [2022-10-17 10:29:53,409 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 598 transitions. Word has length 62 [2022-10-17 10:29:53,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:29:53,410 INFO L495 AbstractCegarLoop]: Abstraction has 411 states and 598 transitions. [2022-10-17 10:29:53,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:53,410 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 598 transitions. [2022-10-17 10:29:53,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-10-17 10:29:53,416 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:29:53,416 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:29:53,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:29:53,417 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:29:53,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:29:53,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1066754174, now seen corresponding path program 1 times [2022-10-17 10:29:53,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:29:53,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793743761] [2022-10-17 10:29:53,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:29:53,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:29:53,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:53,683 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:29:53,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:29:53,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793743761] [2022-10-17 10:29:53,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793743761] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:29:53,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:29:53,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:29:53,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017674330] [2022-10-17 10:29:53,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:29:53,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:29:53,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:29:53,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:29:53,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:29:53,693 INFO L87 Difference]: Start difference. First operand 411 states and 598 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:54,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:29:54,647 INFO L93 Difference]: Finished difference Result 1209 states and 1765 transitions. [2022-10-17 10:29:54,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:29:54,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 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 130 [2022-10-17 10:29:54,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:29:54,654 INFO L225 Difference]: With dead ends: 1209 [2022-10-17 10:29:54,654 INFO L226 Difference]: Without dead ends: 800 [2022-10-17 10:29:54,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:29:54,658 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 142 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-10-17 10:29:54,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 122 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-10-17 10:29:54,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2022-10-17 10:29:54,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 787. [2022-10-17 10:29:54,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 787 states, 786 states have (on average 1.3842239185750635) internal successors, (1088), 786 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:54,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 1088 transitions. [2022-10-17 10:29:54,717 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 1088 transitions. Word has length 130 [2022-10-17 10:29:54,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:29:54,720 INFO L495 AbstractCegarLoop]: Abstraction has 787 states and 1088 transitions. [2022-10-17 10:29:54,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:54,722 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 1088 transitions. [2022-10-17 10:29:54,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-10-17 10:29:54,733 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:29:54,734 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:29:54,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:29:54,738 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:29:54,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:29:54,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1046029789, now seen corresponding path program 1 times [2022-10-17 10:29:54,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:29:54,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543677802] [2022-10-17 10:29:54,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:29:54,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:29:54,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:55,233 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:29:55,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:29:55,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543677802] [2022-10-17 10:29:55,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543677802] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:29:55,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:29:55,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:29:55,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695874222] [2022-10-17 10:29:55,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:29:55,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:29:55,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:29:55,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:29:55,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:29:55,240 INFO L87 Difference]: Start difference. First operand 787 states and 1088 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:56,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:29:56,151 INFO L93 Difference]: Finished difference Result 1942 states and 2629 transitions. [2022-10-17 10:29:56,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:29:56,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-10-17 10:29:56,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:29:56,159 INFO L225 Difference]: With dead ends: 1942 [2022-10-17 10:29:56,159 INFO L226 Difference]: Without dead ends: 1157 [2022-10-17 10:29:56,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:29:56,162 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 119 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-10-17 10:29:56,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 190 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-10-17 10:29:56,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2022-10-17 10:29:56,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1156. [2022-10-17 10:29:56,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1156 states, 1155 states have (on average 1.277056277056277) internal successors, (1475), 1155 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:56,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1475 transitions. [2022-10-17 10:29:56,201 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1475 transitions. Word has length 132 [2022-10-17 10:29:56,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:29:56,201 INFO L495 AbstractCegarLoop]: Abstraction has 1156 states and 1475 transitions. [2022-10-17 10:29:56,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:56,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1475 transitions. [2022-10-17 10:29:56,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-10-17 10:29:56,207 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:29:56,208 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:29:56,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:29:56,208 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:29:56,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:29:56,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1696825530, now seen corresponding path program 1 times [2022-10-17 10:29:56,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:29:56,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535358951] [2022-10-17 10:29:56,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:29:56,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:29:56,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:56,477 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:29:56,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:29:56,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535358951] [2022-10-17 10:29:56,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535358951] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:29:56,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:29:56,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:29:56,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745471915] [2022-10-17 10:29:56,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:29:56,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:29:56,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:29:56,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:29:56,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:29:56,480 INFO L87 Difference]: Start difference. First operand 1156 states and 1475 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:57,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:29:57,392 INFO L93 Difference]: Finished difference Result 2691 states and 3513 transitions. [2022-10-17 10:29:57,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:29:57,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 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 174 [2022-10-17 10:29:57,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:29:57,403 INFO L225 Difference]: With dead ends: 2691 [2022-10-17 10:29:57,403 INFO L226 Difference]: Without dead ends: 1721 [2022-10-17 10:29:57,405 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 [2022-10-17 10:29:57,416 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 144 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-10-17 10:29:57,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 336 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-10-17 10:29:57,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1721 states. [2022-10-17 10:29:57,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1721 to 1528. [2022-10-17 10:29:57,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1528 states, 1527 states have (on average 1.260641781270465) internal successors, (1925), 1527 states have internal predecessors, (1925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:57,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1528 states to 1528 states and 1925 transitions. [2022-10-17 10:29:57,458 INFO L78 Accepts]: Start accepts. Automaton has 1528 states and 1925 transitions. Word has length 174 [2022-10-17 10:29:57,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:29:57,459 INFO L495 AbstractCegarLoop]: Abstraction has 1528 states and 1925 transitions. [2022-10-17 10:29:57,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:57,460 INFO L276 IsEmpty]: Start isEmpty. Operand 1528 states and 1925 transitions. [2022-10-17 10:29:57,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-10-17 10:29:57,464 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:29:57,465 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-10-17 10:29:57,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:29:57,465 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:29:57,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:29:57,466 INFO L85 PathProgramCache]: Analyzing trace with hash 800976377, now seen corresponding path program 1 times [2022-10-17 10:29:57,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:29:57,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996424661] [2022-10-17 10:29:57,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:29:57,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:29:57,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:57,903 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-10-17 10:29:57,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:29:57,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996424661] [2022-10-17 10:29:57,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996424661] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:29:57,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:29:57,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:29:57,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604003773] [2022-10-17 10:29:57,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:29:57,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:29:57,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:29:57,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:29:57,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:29:57,906 INFO L87 Difference]: Start difference. First operand 1528 states and 1925 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:58,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:29:58,938 INFO L93 Difference]: Finished difference Result 4160 states and 5315 transitions. [2022-10-17 10:29:58,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:29:58,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 244 [2022-10-17 10:29:58,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:29:58,955 INFO L225 Difference]: With dead ends: 4160 [2022-10-17 10:29:58,955 INFO L226 Difference]: Without dead ends: 2634 [2022-10-17 10:29:58,980 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 [2022-10-17 10:29:58,982 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 152 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:29:58,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 352 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-10-17 10:29:58,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2634 states. [2022-10-17 10:29:59,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2634 to 2634. [2022-10-17 10:29:59,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2634 states, 2633 states have (on average 1.2468666919863274) internal successors, (3283), 2633 states have internal predecessors, (3283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:59,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2634 states to 2634 states and 3283 transitions. [2022-10-17 10:29:59,050 INFO L78 Accepts]: Start accepts. Automaton has 2634 states and 3283 transitions. Word has length 244 [2022-10-17 10:29:59,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:29:59,054 INFO L495 AbstractCegarLoop]: Abstraction has 2634 states and 3283 transitions. [2022-10-17 10:29:59,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:29:59,058 INFO L276 IsEmpty]: Start isEmpty. Operand 2634 states and 3283 transitions. [2022-10-17 10:29:59,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2022-10-17 10:29:59,064 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:29:59,064 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-10-17 10:29:59,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:29:59,065 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:29:59,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:29:59,066 INFO L85 PathProgramCache]: Analyzing trace with hash 531389150, now seen corresponding path program 1 times [2022-10-17 10:29:59,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:29:59,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770512124] [2022-10-17 10:29:59,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:29:59,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:29:59,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:59,366 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-10-17 10:29:59,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:29:59,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770512124] [2022-10-17 10:29:59,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770512124] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:29:59,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:29:59,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:29:59,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653962295] [2022-10-17 10:29:59,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:29:59,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:29:59,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:29:59,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:29:59,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:29:59,369 INFO L87 Difference]: Start difference. First operand 2634 states and 3283 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:30:00,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:30:00,304 INFO L93 Difference]: Finished difference Result 6553 states and 8157 transitions. [2022-10-17 10:30:00,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:30:00,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 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 255 [2022-10-17 10:30:00,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:30:00,326 INFO L225 Difference]: With dead ends: 6553 [2022-10-17 10:30:00,326 INFO L226 Difference]: Without dead ends: 3921 [2022-10-17 10:30:00,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:30:00,332 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 115 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-10-17 10:30:00,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 155 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-10-17 10:30:00,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3921 states. [2022-10-17 10:30:00,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3921 to 3185. [2022-10-17 10:30:00,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3185 states, 3184 states have (on average 1.1699120603015076) internal successors, (3725), 3184 states have internal predecessors, (3725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:30:00,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3185 states to 3185 states and 3725 transitions. [2022-10-17 10:30:00,433 INFO L78 Accepts]: Start accepts. Automaton has 3185 states and 3725 transitions. Word has length 255 [2022-10-17 10:30:00,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:30:00,434 INFO L495 AbstractCegarLoop]: Abstraction has 3185 states and 3725 transitions. [2022-10-17 10:30:00,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:30:00,434 INFO L276 IsEmpty]: Start isEmpty. Operand 3185 states and 3725 transitions. [2022-10-17 10:30:00,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-10-17 10:30:00,441 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:30:00,441 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:30:00,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:30:00,442 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:30:00,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:30:00,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1060462334, now seen corresponding path program 1 times [2022-10-17 10:30:00,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:30:00,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323871709] [2022-10-17 10:30:00,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:30:00,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:30:00,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:00,809 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-10-17 10:30:00,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:30:00,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323871709] [2022-10-17 10:30:00,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323871709] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:30:00,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:30:00,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:30:00,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041786798] [2022-10-17 10:30:00,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:30:00,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:30:00,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:30:00,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:30:00,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:30:00,812 INFO L87 Difference]: Start difference. First operand 3185 states and 3725 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:30:01,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:30:01,883 INFO L93 Difference]: Finished difference Result 7108 states and 8338 transitions. [2022-10-17 10:30:01,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:30:01,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 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 271 [2022-10-17 10:30:01,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:30:01,905 INFO L225 Difference]: With dead ends: 7108 [2022-10-17 10:30:01,905 INFO L226 Difference]: Without dead ends: 3925 [2022-10-17 10:30:01,909 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 [2022-10-17 10:30:01,910 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 139 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:30:01,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 372 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-10-17 10:30:01,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3925 states. [2022-10-17 10:30:01,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3925 to 3736. [2022-10-17 10:30:01,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3736 states, 3735 states have (on average 1.1606425702811245) internal successors, (4335), 3735 states have internal predecessors, (4335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:30:02,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3736 states to 3736 states and 4335 transitions. [2022-10-17 10:30:02,005 INFO L78 Accepts]: Start accepts. Automaton has 3736 states and 4335 transitions. Word has length 271 [2022-10-17 10:30:02,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:30:02,006 INFO L495 AbstractCegarLoop]: Abstraction has 3736 states and 4335 transitions. [2022-10-17 10:30:02,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:30:02,007 INFO L276 IsEmpty]: Start isEmpty. Operand 3736 states and 4335 transitions. [2022-10-17 10:30:02,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2022-10-17 10:30:02,013 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:30:02,014 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:30:02,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 10:30:02,014 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:30:02,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:30:02,015 INFO L85 PathProgramCache]: Analyzing trace with hash 639036590, now seen corresponding path program 1 times [2022-10-17 10:30:02,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:30:02,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131232060] [2022-10-17 10:30:02,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:30:02,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:30:02,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:02,457 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-10-17 10:30:02,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:30:02,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131232060] [2022-10-17 10:30:02,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131232060] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:30:02,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:30:02,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:30:02,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861763573] [2022-10-17 10:30:02,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:30:02,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:30:02,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:30:02,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:30:02,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:30:02,460 INFO L87 Difference]: Start difference. First operand 3736 states and 4335 transitions. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:30:03,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:30:03,431 INFO L93 Difference]: Finished difference Result 8579 states and 9918 transitions. [2022-10-17 10:30:03,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:30:03,432 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 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 284 [2022-10-17 10:30:03,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:30:03,457 INFO L225 Difference]: With dead ends: 8579 [2022-10-17 10:30:03,457 INFO L226 Difference]: Without dead ends: 4845 [2022-10-17 10:30:03,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:30:03,463 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 158 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-10-17 10:30:03,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 390 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-10-17 10:30:03,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4845 states. [2022-10-17 10:30:03,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4845 to 4844. [2022-10-17 10:30:03,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4844 states, 4843 states have (on average 1.1525913689861655) internal successors, (5582), 4843 states have internal predecessors, (5582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:30:03,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4844 states to 4844 states and 5582 transitions. [2022-10-17 10:30:03,588 INFO L78 Accepts]: Start accepts. Automaton has 4844 states and 5582 transitions. Word has length 284 [2022-10-17 10:30:03,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:30:03,589 INFO L495 AbstractCegarLoop]: Abstraction has 4844 states and 5582 transitions. [2022-10-17 10:30:03,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:30:03,590 INFO L276 IsEmpty]: Start isEmpty. Operand 4844 states and 5582 transitions. [2022-10-17 10:30:03,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2022-10-17 10:30:03,598 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:30:03,598 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:30:03,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 10:30:03,598 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:30:03,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:30:03,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1603746634, now seen corresponding path program 1 times [2022-10-17 10:30:03,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:30:03,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23569972] [2022-10-17 10:30:03,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:30:03,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:30:03,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:04,061 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-10-17 10:30:04,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:30:04,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23569972] [2022-10-17 10:30:04,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23569972] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:30:04,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:30:04,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:30:04,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261135487] [2022-10-17 10:30:04,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:30:04,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:30:04,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:30:04,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:30:04,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:30:04,065 INFO L87 Difference]: Start difference. First operand 4844 states and 5582 transitions. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:30:05,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:30:05,020 INFO L93 Difference]: Finished difference Result 10238 states and 11865 transitions. [2022-10-17 10:30:05,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:30:05,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 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 293 [2022-10-17 10:30:05,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:30:05,050 INFO L225 Difference]: With dead ends: 10238 [2022-10-17 10:30:05,050 INFO L226 Difference]: Without dead ends: 5764 [2022-10-17 10:30:05,056 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 [2022-10-17 10:30:05,058 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 130 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-10-17 10:30:05,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 384 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-10-17 10:30:05,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5764 states. [2022-10-17 10:30:05,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5764 to 5212. [2022-10-17 10:30:05,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5212 states, 5211 states have (on average 1.146421032431395) internal successors, (5974), 5211 states have internal predecessors, (5974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:30:05,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5212 states to 5212 states and 5974 transitions. [2022-10-17 10:30:05,195 INFO L78 Accepts]: Start accepts. Automaton has 5212 states and 5974 transitions. Word has length 293 [2022-10-17 10:30:05,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:30:05,196 INFO L495 AbstractCegarLoop]: Abstraction has 5212 states and 5974 transitions. [2022-10-17 10:30:05,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:30:05,196 INFO L276 IsEmpty]: Start isEmpty. Operand 5212 states and 5974 transitions. [2022-10-17 10:30:05,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2022-10-17 10:30:05,206 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:30:05,207 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:30:05,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-17 10:30:05,207 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:30:05,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:30:05,213 INFO L85 PathProgramCache]: Analyzing trace with hash -971055813, now seen corresponding path program 1 times [2022-10-17 10:30:05,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:30:05,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876736434] [2022-10-17 10:30:05,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:30:05,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:30:05,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:05,492 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-10-17 10:30:05,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:30:05,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876736434] [2022-10-17 10:30:05,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876736434] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:30:05,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:30:05,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:30:05,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479616209] [2022-10-17 10:30:05,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:30:05,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:30:05,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:30:05,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:30:05,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:30:05,499 INFO L87 Difference]: Start difference. First operand 5212 states and 5974 transitions. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:30:06,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:30:06,534 INFO L93 Difference]: Finished difference Result 12262 states and 14255 transitions. [2022-10-17 10:30:06,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:30:06,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 321 [2022-10-17 10:30:06,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:30:06,568 INFO L225 Difference]: With dead ends: 12262 [2022-10-17 10:30:06,568 INFO L226 Difference]: Without dead ends: 7420 [2022-10-17 10:30:06,574 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 [2022-10-17 10:30:06,575 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 147 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:30:06,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 342 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-10-17 10:30:06,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7420 states. [2022-10-17 10:30:06,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7420 to 7235. [2022-10-17 10:30:06,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7235 states, 7234 states have (on average 1.1385125794857618) internal successors, (8236), 7234 states have internal predecessors, (8236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:30:06,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7235 states to 7235 states and 8236 transitions. [2022-10-17 10:30:06,727 INFO L78 Accepts]: Start accepts. Automaton has 7235 states and 8236 transitions. Word has length 321 [2022-10-17 10:30:06,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:30:06,727 INFO L495 AbstractCegarLoop]: Abstraction has 7235 states and 8236 transitions. [2022-10-17 10:30:06,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:30:06,728 INFO L276 IsEmpty]: Start isEmpty. Operand 7235 states and 8236 transitions. [2022-10-17 10:30:06,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2022-10-17 10:30:06,746 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:30:06,747 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:30:06,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-10-17 10:30:06,747 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:30:06,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:30:06,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1551061136, now seen corresponding path program 1 times [2022-10-17 10:30:06,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:30:06,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708377265] [2022-10-17 10:30:06,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:30:06,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:30:06,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:07,258 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 417 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-10-17 10:30:07,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:30:07,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708377265] [2022-10-17 10:30:07,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708377265] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:30:07,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:30:07,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:30:07,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811736725] [2022-10-17 10:30:07,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:30:07,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:30:07,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:30:07,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:30:07,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:30:07,262 INFO L87 Difference]: Start difference. First operand 7235 states and 8236 transitions. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:30:08,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:30:08,171 INFO L93 Difference]: Finished difference Result 15954 states and 18177 transitions. [2022-10-17 10:30:08,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:30:08,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 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 434 [2022-10-17 10:30:08,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:30:08,194 INFO L225 Difference]: With dead ends: 15954 [2022-10-17 10:30:08,194 INFO L226 Difference]: Without dead ends: 8905 [2022-10-17 10:30:08,203 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 [2022-10-17 10:30:08,203 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 67 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-10-17 10:30:08,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 180 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-10-17 10:30:08,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8905 states. [2022-10-17 10:30:08,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8905 to 8891. [2022-10-17 10:30:08,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8891 states, 8890 states have (on average 1.1227221597300336) internal successors, (9981), 8890 states have internal predecessors, (9981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:30:08,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8891 states to 8891 states and 9981 transitions. [2022-10-17 10:30:08,366 INFO L78 Accepts]: Start accepts. Automaton has 8891 states and 9981 transitions. Word has length 434 [2022-10-17 10:30:08,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:30:08,367 INFO L495 AbstractCegarLoop]: Abstraction has 8891 states and 9981 transitions. [2022-10-17 10:30:08,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:30:08,368 INFO L276 IsEmpty]: Start isEmpty. Operand 8891 states and 9981 transitions. [2022-10-17 10:30:08,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2022-10-17 10:30:08,394 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:30:08,395 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:30:08,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-17 10:30:08,395 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:30:08,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:30:08,396 INFO L85 PathProgramCache]: Analyzing trace with hash 531016907, now seen corresponding path program 1 times [2022-10-17 10:30:08,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:30:08,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865208015] [2022-10-17 10:30:08,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:30:08,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:30:08,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:08,811 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 632 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-10-17 10:30:08,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:30:08,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865208015] [2022-10-17 10:30:08,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865208015] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:30:08,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:30:08,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:30:08,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714283648] [2022-10-17 10:30:08,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:30:08,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:30:08,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:30:08,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:30:08,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:30:08,814 INFO L87 Difference]: Start difference. First operand 8891 states and 9981 transitions. Second operand has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:30:09,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:30:09,767 INFO L93 Difference]: Finished difference Result 18699 states and 21106 transitions. [2022-10-17 10:30:09,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:30:09,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 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 486 [2022-10-17 10:30:09,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:30:09,789 INFO L225 Difference]: With dead ends: 18699 [2022-10-17 10:30:09,789 INFO L226 Difference]: Without dead ends: 10178 [2022-10-17 10:30:09,799 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 [2022-10-17 10:30:09,800 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 70 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-10-17 10:30:09,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 354 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-10-17 10:30:09,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10178 states. [2022-10-17 10:30:09,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10178 to 9994. [2022-10-17 10:30:10,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9994 states, 9993 states have (on average 1.1252877013909737) internal successors, (11245), 9993 states have internal predecessors, (11245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:30:10,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9994 states to 9994 states and 11245 transitions. [2022-10-17 10:30:10,033 INFO L78 Accepts]: Start accepts. Automaton has 9994 states and 11245 transitions. Word has length 486 [2022-10-17 10:30:10,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:30:10,034 INFO L495 AbstractCegarLoop]: Abstraction has 9994 states and 11245 transitions. [2022-10-17 10:30:10,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:30:10,035 INFO L276 IsEmpty]: Start isEmpty. Operand 9994 states and 11245 transitions. [2022-10-17 10:30:10,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2022-10-17 10:30:10,061 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:30:10,062 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:30:10,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-10-17 10:30:10,062 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:30:10,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:30:10,063 INFO L85 PathProgramCache]: Analyzing trace with hash -236333549, now seen corresponding path program 1 times [2022-10-17 10:30:10,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:30:10,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794037589] [2022-10-17 10:30:10,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:30:10,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:30:10,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:10,863 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 586 proven. 0 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2022-10-17 10:30:10,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:30:10,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794037589] [2022-10-17 10:30:10,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794037589] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:30:10,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:30:10,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:30:10,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296772552] [2022-10-17 10:30:10,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:30:10,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:30:10,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:30:10,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:30:10,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:30:10,866 INFO L87 Difference]: Start difference. First operand 9994 states and 11245 transitions. Second operand has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:30:11,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:30:11,870 INFO L93 Difference]: Finished difference Result 22027 states and 24894 transitions. [2022-10-17 10:30:11,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:30:11,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 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 522 [2022-10-17 10:30:11,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:30:11,897 INFO L225 Difference]: With dead ends: 22027 [2022-10-17 10:30:11,897 INFO L226 Difference]: Without dead ends: 12403 [2022-10-17 10:30:11,907 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 [2022-10-17 10:30:11,908 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 139 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-10-17 10:30:11,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 133 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-10-17 10:30:11,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12403 states. [2022-10-17 10:30:12,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12403 to 12215. [2022-10-17 10:30:12,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12215 states, 12214 states have (on average 1.1200261994432619) internal successors, (13680), 12214 states have internal predecessors, (13680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:30:12,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12215 states to 12215 states and 13680 transitions. [2022-10-17 10:30:12,114 INFO L78 Accepts]: Start accepts. Automaton has 12215 states and 13680 transitions. Word has length 522 [2022-10-17 10:30:12,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:30:12,115 INFO L495 AbstractCegarLoop]: Abstraction has 12215 states and 13680 transitions. [2022-10-17 10:30:12,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:30:12,115 INFO L276 IsEmpty]: Start isEmpty. Operand 12215 states and 13680 transitions. [2022-10-17 10:30:12,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2022-10-17 10:30:12,152 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:30:12,153 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:30:12,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-10-17 10:30:12,153 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:30:12,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:30:12,154 INFO L85 PathProgramCache]: Analyzing trace with hash 941049859, now seen corresponding path program 1 times [2022-10-17 10:30:12,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:30:12,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806120127] [2022-10-17 10:30:12,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:30:12,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:30:12,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:12,964 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 619 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2022-10-17 10:30:12,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:30:12,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806120127] [2022-10-17 10:30:12,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806120127] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:30:12,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:30:12,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:30:12,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825250494] [2022-10-17 10:30:12,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:30:12,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:30:12,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:30:12,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:30:12,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:30:12,968 INFO L87 Difference]: Start difference. First operand 12215 states and 13680 transitions. Second operand has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:30:13,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:30:13,967 INFO L93 Difference]: Finished difference Result 27191 states and 30476 transitions. [2022-10-17 10:30:13,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:30:13,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 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 526 [2022-10-17 10:30:13,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:30:14,063 INFO L225 Difference]: With dead ends: 27191 [2022-10-17 10:30:14,063 INFO L226 Difference]: Without dead ends: 15346 [2022-10-17 10:30:14,071 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 [2022-10-17 10:30:14,072 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 129 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-10-17 10:30:14,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 78 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-10-17 10:30:14,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15346 states. [2022-10-17 10:30:14,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15346 to 14415. [2022-10-17 10:30:14,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14415 states, 14414 states have (on average 1.1133620091577632) internal successors, (16048), 14414 states have internal predecessors, (16048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:30:14,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14415 states to 14415 states and 16048 transitions. [2022-10-17 10:30:14,317 INFO L78 Accepts]: Start accepts. Automaton has 14415 states and 16048 transitions. Word has length 526 [2022-10-17 10:30:14,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:30:14,318 INFO L495 AbstractCegarLoop]: Abstraction has 14415 states and 16048 transitions. [2022-10-17 10:30:14,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:30:14,318 INFO L276 IsEmpty]: Start isEmpty. Operand 14415 states and 16048 transitions. [2022-10-17 10:30:14,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2022-10-17 10:30:14,355 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:30:14,356 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:30:14,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-10-17 10:30:14,356 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:30:14,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:30:14,357 INFO L85 PathProgramCache]: Analyzing trace with hash -540773030, now seen corresponding path program 1 times [2022-10-17 10:30:14,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:30:14,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377762067] [2022-10-17 10:30:14,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:30:14,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:30:14,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat