./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem03_label04.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem03_label04.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9287609067f4f1cf68c9add8d10c44a8dc20a6e66127e88f3c147131798fea5d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 18:28:40,305 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 18:28:40,307 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 18:28:40,324 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 18:28:40,325 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 18:28:40,326 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 18:28:40,327 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 18:28:40,328 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 18:28:40,330 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 18:28:40,330 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 18:28:40,331 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 18:28:40,332 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 18:28:40,332 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 18:28:40,333 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 18:28:40,334 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 18:28:40,335 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 18:28:40,336 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 18:28:40,337 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 18:28:40,338 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 18:28:40,340 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 18:28:40,341 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 18:28:40,342 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 18:28:40,343 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 18:28:40,344 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 18:28:40,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 18:28:40,347 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 18:28:40,348 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 18:28:40,348 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 18:28:40,349 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 18:28:40,350 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 18:28:40,350 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 18:28:40,351 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 18:28:40,351 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 18:28:40,352 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 18:28:40,353 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 18:28:40,353 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 18:28:40,354 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 18:28:40,354 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 18:28:40,354 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 18:28:40,355 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 18:28:40,355 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 18:28:40,356 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 18:28:40,401 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 18:28:40,401 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 18:28:40,402 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 18:28:40,402 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 18:28:40,402 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 18:28:40,403 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 18:28:40,403 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 18:28:40,403 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 18:28:40,404 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 18:28:40,404 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 18:28:40,404 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 18:28:40,404 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 18:28:40,404 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 18:28:40,404 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 18:28:40,404 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 18:28:40,405 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 18:28:40,405 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 18:28:40,405 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 18:28:40,405 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 18:28:40,405 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 18:28:40,405 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 18:28:40,406 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 18:28:40,406 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 18:28:40,406 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 18:28:40,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:28:40,406 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 18:28:40,406 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 18:28:40,406 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 18:28:40,407 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 18:28:40,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 18:28:40,407 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 18:28:40,407 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 18:28:40,407 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 18:28:40,407 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 18:28:40,408 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 18:28:40,408 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9287609067f4f1cf68c9add8d10c44a8dc20a6e66127e88f3c147131798fea5d [2022-12-13 18:28:40,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 18:28:40,602 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 18:28:40,604 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 18:28:40,606 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 18:28:40,606 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 18:28:40,607 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/eca-rers2012/Problem03_label04.c [2022-12-13 18:28:43,193 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 18:28:43,390 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 18:28:43,390 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/sv-benchmarks/c/eca-rers2012/Problem03_label04.c [2022-12-13 18:28:43,400 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/data/79c0e35d9/c00764ee337e4f49a4f4b8f745b70c85/FLAG7146fb817 [2022-12-13 18:28:43,411 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/data/79c0e35d9/c00764ee337e4f49a4f4b8f745b70c85 [2022-12-13 18:28:43,413 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 18:28:43,414 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 18:28:43,415 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 18:28:43,415 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 18:28:43,418 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 18:28:43,419 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:28:43" (1/1) ... [2022-12-13 18:28:43,420 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@412b252 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:28:43, skipping insertion in model container [2022-12-13 18:28:43,420 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:28:43" (1/1) ... [2022-12-13 18:28:43,426 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 18:28:43,472 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 18:28:43,844 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/sv-benchmarks/c/eca-rers2012/Problem03_label04.c[60959,60972] [2022-12-13 18:28:43,859 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:28:43,867 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 18:28:44,048 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/sv-benchmarks/c/eca-rers2012/Problem03_label04.c[60959,60972] [2022-12-13 18:28:44,053 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:28:44,065 INFO L208 MainTranslator]: Completed translation [2022-12-13 18:28:44,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:28:44 WrapperNode [2022-12-13 18:28:44,065 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 18:28:44,066 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 18:28:44,066 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 18:28:44,066 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 18:28:44,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:28:44" (1/1) ... [2022-12-13 18:28:44,098 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:28:44" (1/1) ... [2022-12-13 18:28:44,154 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1771 [2022-12-13 18:28:44,155 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 18:28:44,155 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 18:28:44,155 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 18:28:44,155 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 18:28:44,163 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:28:44" (1/1) ... [2022-12-13 18:28:44,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:28:44" (1/1) ... [2022-12-13 18:28:44,169 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:28:44" (1/1) ... [2022-12-13 18:28:44,170 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:28:44" (1/1) ... [2022-12-13 18:28:44,195 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:28:44" (1/1) ... [2022-12-13 18:28:44,201 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:28:44" (1/1) ... [2022-12-13 18:28:44,210 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:28:44" (1/1) ... [2022-12-13 18:28:44,215 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:28:44" (1/1) ... [2022-12-13 18:28:44,224 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 18:28:44,224 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 18:28:44,224 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 18:28:44,225 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 18:28:44,225 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:28:44" (1/1) ... [2022-12-13 18:28:44,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:28:44,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:28:44,248 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 18:28:44,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 18:28:44,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 18:28:44,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 18:28:44,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 18:28:44,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 18:28:44,355 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 18:28:44,357 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 18:28:45,687 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 18:28:45,696 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 18:28:45,696 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 18:28:45,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:28:45 BoogieIcfgContainer [2022-12-13 18:28:45,699 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 18:28:45,702 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 18:28:45,702 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 18:28:45,705 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 18:28:45,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 06:28:43" (1/3) ... [2022-12-13 18:28:45,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ac1599d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:28:45, skipping insertion in model container [2022-12-13 18:28:45,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:28:44" (2/3) ... [2022-12-13 18:28:45,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ac1599d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:28:45, skipping insertion in model container [2022-12-13 18:28:45,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:28:45" (3/3) ... [2022-12-13 18:28:45,708 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label04.c [2022-12-13 18:28:45,724 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 18:28:45,725 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 18:28:45,763 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:28:45,768 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;@79b1171c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:28:45,768 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 18:28:45,772 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:28:45,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-12-13 18:28:45,783 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:28:45,783 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:28:45,784 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:28:45,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:28:45,787 INFO L85 PathProgramCache]: Analyzing trace with hash 2019161402, now seen corresponding path program 1 times [2022-12-13 18:28:45,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:28:45,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127449421] [2022-12-13 18:28:45,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:28:45,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:28:46,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:46,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:28:46,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:28:46,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127449421] [2022-12-13 18:28:46,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127449421] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:28:46,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:28:46,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:28:46,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275066185] [2022-12-13 18:28:46,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:28:46,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:28:46,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:28:46,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:28:46,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:28:46,498 INFO L87 Difference]: Start difference. First operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 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 66.0) internal successors, (198), 2 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:28:47,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:28:47,299 INFO L93 Difference]: Finished difference Result 843 states and 1493 transitions. [2022-12-13 18:28:47,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:28:47,302 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 2 states have internal predecessors, (198), 0 states have call successors, (0), 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 198 [2022-12-13 18:28:47,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:28:47,315 INFO L225 Difference]: With dead ends: 843 [2022-12-13 18:28:47,315 INFO L226 Difference]: Without dead ends: 463 [2022-12-13 18:28:47,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:28:47,322 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 76 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 18:28:47,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 121 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 18:28:47,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2022-12-13 18:28:47,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 449. [2022-12-13 18:28:47,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 448 states have (on average 1.6339285714285714) internal successors, (732), 448 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:28:47,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 732 transitions. [2022-12-13 18:28:47,380 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 732 transitions. Word has length 198 [2022-12-13 18:28:47,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:28:47,381 INFO L495 AbstractCegarLoop]: Abstraction has 449 states and 732 transitions. [2022-12-13 18:28:47,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 2 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:28:47,381 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 732 transitions. [2022-12-13 18:28:47,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-12-13 18:28:47,386 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:28:47,386 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:28:47,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 18:28:47,387 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:28:47,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:28:47,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1882019270, now seen corresponding path program 1 times [2022-12-13 18:28:47,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:28:47,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014318360] [2022-12-13 18:28:47,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:28:47,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:28:47,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:47,686 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:28:47,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:28:47,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014318360] [2022-12-13 18:28:47,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014318360] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:28:47,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:28:47,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:28:47,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502237507] [2022-12-13 18:28:47,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:28:47,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:28:47,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:28:47,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:28:47,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:28:47,690 INFO L87 Difference]: Start difference. First operand 449 states and 732 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 2 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:28:48,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:28:48,318 INFO L93 Difference]: Finished difference Result 1333 states and 2180 transitions. [2022-12-13 18:28:48,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:28:48,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 2 states have internal predecessors, (204), 0 states have call successors, (0), 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 204 [2022-12-13 18:28:48,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:28:48,321 INFO L225 Difference]: With dead ends: 1333 [2022-12-13 18:28:48,321 INFO L226 Difference]: Without dead ends: 886 [2022-12-13 18:28:48,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:28:48,324 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 285 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 18:28:48,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 114 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 18:28:48,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2022-12-13 18:28:48,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 882. [2022-12-13 18:28:48,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 881 states have (on average 1.6163450624290578) internal successors, (1424), 881 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:28:48,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1424 transitions. [2022-12-13 18:28:48,356 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1424 transitions. Word has length 204 [2022-12-13 18:28:48,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:28:48,356 INFO L495 AbstractCegarLoop]: Abstraction has 882 states and 1424 transitions. [2022-12-13 18:28:48,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 2 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:28:48,357 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1424 transitions. [2022-12-13 18:28:48,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-12-13 18:28:48,362 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:28:48,362 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:28:48,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 18:28:48,362 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:28:48,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:28:48,363 INFO L85 PathProgramCache]: Analyzing trace with hash -952325218, now seen corresponding path program 1 times [2022-12-13 18:28:48,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:28:48,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953942416] [2022-12-13 18:28:48,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:28:48,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:28:48,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:48,539 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:28:48,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:28:48,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953942416] [2022-12-13 18:28:48,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953942416] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:28:48,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:28:48,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:28:48,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604110964] [2022-12-13 18:28:48,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:28:48,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:28:48,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:28:48,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:28:48,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:28:48,542 INFO L87 Difference]: Start difference. First operand 882 states and 1424 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 2 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:28:49,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:28:49,263 INFO L93 Difference]: Finished difference Result 2575 states and 4172 transitions. [2022-12-13 18:28:49,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:28:49,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 2 states have internal predecessors, (204), 0 states have call successors, (0), 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 204 [2022-12-13 18:28:49,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:28:49,281 INFO L225 Difference]: With dead ends: 2575 [2022-12-13 18:28:49,281 INFO L226 Difference]: Without dead ends: 1695 [2022-12-13 18:28:49,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:28:49,283 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 214 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 18:28:49,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 194 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 18:28:49,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1695 states. [2022-12-13 18:28:49,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1695 to 1695. [2022-12-13 18:28:49,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1695 states, 1694 states have (on average 1.39728453364817) internal successors, (2367), 1694 states have internal predecessors, (2367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:28:49,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1695 states to 1695 states and 2367 transitions. [2022-12-13 18:28:49,312 INFO L78 Accepts]: Start accepts. Automaton has 1695 states and 2367 transitions. Word has length 204 [2022-12-13 18:28:49,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:28:49,313 INFO L495 AbstractCegarLoop]: Abstraction has 1695 states and 2367 transitions. [2022-12-13 18:28:49,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 2 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:28:49,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1695 states and 2367 transitions. [2022-12-13 18:28:49,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-12-13 18:28:49,316 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:28:49,316 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:28:49,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 18:28:49,316 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:28:49,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:28:49,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1460060955, now seen corresponding path program 1 times [2022-12-13 18:28:49,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:28:49,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391457756] [2022-12-13 18:28:49,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:28:49,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:28:49,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:49,425 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 18:28:49,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:28:49,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391457756] [2022-12-13 18:28:49,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391457756] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:28:49,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:28:49,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:28:49,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164917154] [2022-12-13 18:28:49,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:28:49,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:28:49,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:28:49,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:28:49,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:28:49,428 INFO L87 Difference]: Start difference. First operand 1695 states and 2367 transitions. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 2 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:28:50,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:28:50,119 INFO L93 Difference]: Finished difference Result 4840 states and 6821 transitions. [2022-12-13 18:28:50,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:28:50,120 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 2 states have internal predecessors, (209), 0 states have call successors, (0), 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 212 [2022-12-13 18:28:50,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:28:50,139 INFO L225 Difference]: With dead ends: 4840 [2022-12-13 18:28:50,139 INFO L226 Difference]: Without dead ends: 3147 [2022-12-13 18:28:50,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:28:50,143 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 249 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 18:28:50,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 90 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 18:28:50,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3147 states. [2022-12-13 18:28:50,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3147 to 3123. [2022-12-13 18:28:50,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3123 states, 3122 states have (on average 1.3837283792440742) internal successors, (4320), 3122 states have internal predecessors, (4320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:28:50,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3123 states to 3123 states and 4320 transitions. [2022-12-13 18:28:50,228 INFO L78 Accepts]: Start accepts. Automaton has 3123 states and 4320 transitions. Word has length 212 [2022-12-13 18:28:50,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:28:50,228 INFO L495 AbstractCegarLoop]: Abstraction has 3123 states and 4320 transitions. [2022-12-13 18:28:50,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 2 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:28:50,228 INFO L276 IsEmpty]: Start isEmpty. Operand 3123 states and 4320 transitions. [2022-12-13 18:28:50,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-12-13 18:28:50,237 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:28:50,237 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:28:50,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 18:28:50,238 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:28:50,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:28:50,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1361528816, now seen corresponding path program 1 times [2022-12-13 18:28:50,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:28:50,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553737040] [2022-12-13 18:28:50,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:28:50,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:28:50,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:50,495 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 18:28:50,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:28:50,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553737040] [2022-12-13 18:28:50,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553737040] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:28:50,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:28:50,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:28:50,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569348516] [2022-12-13 18:28:50,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:28:50,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:28:50,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:28:50,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:28:50,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:28:50,498 INFO L87 Difference]: Start difference. First operand 3123 states and 4320 transitions. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:28:51,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:28:51,250 INFO L93 Difference]: Finished difference Result 8695 states and 12189 transitions. [2022-12-13 18:28:51,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:28:51,250 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 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 219 [2022-12-13 18:28:51,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:28:51,262 INFO L225 Difference]: With dead ends: 8695 [2022-12-13 18:28:51,262 INFO L226 Difference]: Without dead ends: 5574 [2022-12-13 18:28:51,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:28:51,266 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 216 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 18:28:51,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 367 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 18:28:51,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5574 states. [2022-12-13 18:28:51,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5574 to 5568. [2022-12-13 18:28:51,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5568 states, 5567 states have (on average 1.3175857733069876) internal successors, (7335), 5567 states have internal predecessors, (7335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:28:51,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5568 states to 5568 states and 7335 transitions. [2022-12-13 18:28:51,363 INFO L78 Accepts]: Start accepts. Automaton has 5568 states and 7335 transitions. Word has length 219 [2022-12-13 18:28:51,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:28:51,363 INFO L495 AbstractCegarLoop]: Abstraction has 5568 states and 7335 transitions. [2022-12-13 18:28:51,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:28:51,364 INFO L276 IsEmpty]: Start isEmpty. Operand 5568 states and 7335 transitions. [2022-12-13 18:28:51,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-12-13 18:28:51,371 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:28:51,371 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:28:51,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 18:28:51,372 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:28:51,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:28:51,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1121528084, now seen corresponding path program 1 times [2022-12-13 18:28:51,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:28:51,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705856266] [2022-12-13 18:28:51,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:28:51,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:28:51,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:51,573 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 18:28:51,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:28:51,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705856266] [2022-12-13 18:28:51,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705856266] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:28:51,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:28:51,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:28:51,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154323475] [2022-12-13 18:28:51,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:28:51,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:28:51,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:28:51,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:28:51,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:28:51,575 INFO L87 Difference]: Start difference. First operand 5568 states and 7335 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:28:52,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:28:52,338 INFO L93 Difference]: Finished difference Result 13180 states and 17448 transitions. [2022-12-13 18:28:52,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:28:52,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 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 226 [2022-12-13 18:28:52,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:28:52,377 INFO L225 Difference]: With dead ends: 13180 [2022-12-13 18:28:52,378 INFO L226 Difference]: Without dead ends: 7614 [2022-12-13 18:28:52,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:28:52,386 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 212 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 18:28:52,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 372 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 18:28:52,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7614 states. [2022-12-13 18:28:52,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7614 to 7600. [2022-12-13 18:28:52,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7600 states, 7599 states have (on average 1.2791156731148836) internal successors, (9720), 7599 states have internal predecessors, (9720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:28:52,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7600 states to 7600 states and 9720 transitions. [2022-12-13 18:28:52,511 INFO L78 Accepts]: Start accepts. Automaton has 7600 states and 9720 transitions. Word has length 226 [2022-12-13 18:28:52,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:28:52,511 INFO L495 AbstractCegarLoop]: Abstraction has 7600 states and 9720 transitions. [2022-12-13 18:28:52,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:28:52,512 INFO L276 IsEmpty]: Start isEmpty. Operand 7600 states and 9720 transitions. [2022-12-13 18:28:52,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-12-13 18:28:52,520 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:28:52,520 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:28:52,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 18:28:52,520 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:28:52,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:28:52,521 INFO L85 PathProgramCache]: Analyzing trace with hash -464017916, now seen corresponding path program 1 times [2022-12-13 18:28:52,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:28:52,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806053401] [2022-12-13 18:28:52,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:28:52,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:28:52,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:52,739 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 18:28:52,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:28:52,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806053401] [2022-12-13 18:28:52,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806053401] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:28:52,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:28:52,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:28:52,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551250017] [2022-12-13 18:28:52,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:28:52,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:28:52,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:28:52,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:28:52,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:28:52,742 INFO L87 Difference]: Start difference. First operand 7600 states and 9720 transitions. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 2 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:28:53,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:28:53,377 INFO L93 Difference]: Finished difference Result 21732 states and 27866 transitions. [2022-12-13 18:28:53,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:28:53,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 2 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 232 [2022-12-13 18:28:53,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:28:53,399 INFO L225 Difference]: With dead ends: 21732 [2022-12-13 18:28:53,399 INFO L226 Difference]: Without dead ends: 14134 [2022-12-13 18:28:53,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:28:53,404 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 217 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 18:28:53,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 164 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 18:28:53,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14134 states. [2022-12-13 18:28:53,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14134 to 14121. [2022-12-13 18:28:53,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14121 states, 14120 states have (on average 1.248158640226629) internal successors, (17624), 14120 states have internal predecessors, (17624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:28:53,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14121 states to 14121 states and 17624 transitions. [2022-12-13 18:28:53,596 INFO L78 Accepts]: Start accepts. Automaton has 14121 states and 17624 transitions. Word has length 232 [2022-12-13 18:28:53,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:28:53,596 INFO L495 AbstractCegarLoop]: Abstraction has 14121 states and 17624 transitions. [2022-12-13 18:28:53,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 2 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:28:53,597 INFO L276 IsEmpty]: Start isEmpty. Operand 14121 states and 17624 transitions. [2022-12-13 18:28:53,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-12-13 18:28:53,609 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:28:53,609 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:28:53,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 18:28:53,609 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:28:53,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:28:53,609 INFO L85 PathProgramCache]: Analyzing trace with hash 953523527, now seen corresponding path program 1 times [2022-12-13 18:28:53,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:28:53,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499453656] [2022-12-13 18:28:53,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:28:53,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:28:53,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:53,831 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:28:53,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:28:53,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499453656] [2022-12-13 18:28:53,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499453656] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:28:53,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:28:53,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:28:53,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752891174] [2022-12-13 18:28:53,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:28:53,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:28:53,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:28:53,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:28:53,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:28:53,832 INFO L87 Difference]: Start difference. First operand 14121 states and 17624 transitions. Second operand has 4 states, 4 states have (on average 60.5) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:28:54,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:28:54,792 INFO L93 Difference]: Finished difference Result 28079 states and 35105 transitions. [2022-12-13 18:28:54,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:28:54,793 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.5) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 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 242 [2022-12-13 18:28:54,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:28:54,812 INFO L225 Difference]: With dead ends: 28079 [2022-12-13 18:28:54,812 INFO L226 Difference]: Without dead ends: 14163 [2022-12-13 18:28:54,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:28:54,817 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 453 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 376 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 1428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 376 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 18:28:54,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 137 Invalid, 1428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [376 Valid, 1052 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-13 18:28:54,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14163 states. [2022-12-13 18:28:54,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14163 to 13309. [2022-12-13 18:28:54,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13309 states, 13308 states have (on average 1.2481965734896303) internal successors, (16611), 13308 states have internal predecessors, (16611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:28:54,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13309 states to 13309 states and 16611 transitions. [2022-12-13 18:28:54,968 INFO L78 Accepts]: Start accepts. Automaton has 13309 states and 16611 transitions. Word has length 242 [2022-12-13 18:28:54,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:28:54,969 INFO L495 AbstractCegarLoop]: Abstraction has 13309 states and 16611 transitions. [2022-12-13 18:28:54,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.5) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:28:54,969 INFO L276 IsEmpty]: Start isEmpty. Operand 13309 states and 16611 transitions. [2022-12-13 18:28:54,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2022-12-13 18:28:54,980 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:28:54,981 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:28:54,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 18:28:54,981 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:28:54,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:28:54,982 INFO L85 PathProgramCache]: Analyzing trace with hash 437609024, now seen corresponding path program 1 times [2022-12-13 18:28:54,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:28:54,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709612898] [2022-12-13 18:28:54,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:28:54,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:28:55,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:55,207 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-12-13 18:28:55,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:28:55,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709612898] [2022-12-13 18:28:55,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709612898] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:28:55,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:28:55,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:28:55,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512915606] [2022-12-13 18:28:55,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:28:55,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:28:55,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:28:55,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:28:55,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:28:55,209 INFO L87 Difference]: Start difference. First operand 13309 states and 16611 transitions. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 2 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:28:55,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:28:55,740 INFO L93 Difference]: Finished difference Result 36391 states and 45729 transitions. [2022-12-13 18:28:55,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:28:55,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 2 states have internal predecessors, (213), 0 states have call successors, (0), 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 245 [2022-12-13 18:28:55,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:28:55,760 INFO L225 Difference]: With dead ends: 36391 [2022-12-13 18:28:55,760 INFO L226 Difference]: Without dead ends: 23287 [2022-12-13 18:28:55,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:28:55,766 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 241 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 18:28:55,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 183 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 18:28:55,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23287 states. [2022-12-13 18:28:55,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23287 to 23079. [2022-12-13 18:28:55,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23079 states, 23078 states have (on average 1.224239535488344) internal successors, (28253), 23078 states have internal predecessors, (28253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:28:55,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23079 states to 23079 states and 28253 transitions. [2022-12-13 18:28:55,974 INFO L78 Accepts]: Start accepts. Automaton has 23079 states and 28253 transitions. Word has length 245 [2022-12-13 18:28:55,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:28:55,974 INFO L495 AbstractCegarLoop]: Abstraction has 23079 states and 28253 transitions. [2022-12-13 18:28:55,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 2 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:28:55,975 INFO L276 IsEmpty]: Start isEmpty. Operand 23079 states and 28253 transitions. [2022-12-13 18:28:56,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2022-12-13 18:28:56,007 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:28:56,007 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:28:56,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 18:28:56,007 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:28:56,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:28:56,008 INFO L85 PathProgramCache]: Analyzing trace with hash 917267845, now seen corresponding path program 1 times [2022-12-13 18:28:56,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:28:56,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292186556] [2022-12-13 18:28:56,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:28:56,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:28:56,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:56,258 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-12-13 18:28:56,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:28:56,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292186556] [2022-12-13 18:28:56,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292186556] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:28:56,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:28:56,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:28:56,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896399737] [2022-12-13 18:28:56,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:28:56,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:28:56,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:28:56,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:28:56,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:28:56,261 INFO L87 Difference]: Start difference. First operand 23079 states and 28253 transitions. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 2 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:28:56,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:28:56,985 INFO L93 Difference]: Finished difference Result 54951 states and 67802 transitions. [2022-12-13 18:28:56,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:28:56,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 2 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 262 [2022-12-13 18:28:56,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:28:57,018 INFO L225 Difference]: With dead ends: 54951 [2022-12-13 18:28:57,018 INFO L226 Difference]: Without dead ends: 32077 [2022-12-13 18:28:57,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:28:57,033 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 211 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 18:28:57,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 243 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 18:28:57,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32077 states. [2022-12-13 18:28:57,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32077 to 32038. [2022-12-13 18:28:57,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32038 states, 32037 states have (on average 1.2361020070543434) internal successors, (39601), 32037 states have internal predecessors, (39601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:28:57,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32038 states to 32038 states and 39601 transitions. [2022-12-13 18:28:57,427 INFO L78 Accepts]: Start accepts. Automaton has 32038 states and 39601 transitions. Word has length 262 [2022-12-13 18:28:57,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:28:57,427 INFO L495 AbstractCegarLoop]: Abstraction has 32038 states and 39601 transitions. [2022-12-13 18:28:57,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 2 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:28:57,427 INFO L276 IsEmpty]: Start isEmpty. Operand 32038 states and 39601 transitions. [2022-12-13 18:28:57,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-12-13 18:28:57,451 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:28:57,452 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:28:57,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 18:28:57,452 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:28:57,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:28:57,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1951124923, now seen corresponding path program 1 times [2022-12-13 18:28:57,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:28:57,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738141741] [2022-12-13 18:28:57,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:28:57,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:28:57,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:57,787 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-12-13 18:28:57,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:28:57,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738141741] [2022-12-13 18:28:57,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738141741] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:28:57,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:28:57,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:28:57,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310599213] [2022-12-13 18:28:57,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:28:57,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:28:57,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:28:57,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:28:57,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:28:57,789 INFO L87 Difference]: Start difference. First operand 32038 states and 39601 transitions. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 2 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:28:58,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:28:58,634 INFO L93 Difference]: Finished difference Result 86922 states and 107979 transitions. [2022-12-13 18:28:58,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:28:58,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 2 states have internal predecessors, (234), 0 states have call successors, (0), 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 266 [2022-12-13 18:28:58,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:28:58,716 INFO L225 Difference]: With dead ends: 86922 [2022-12-13 18:28:58,716 INFO L226 Difference]: Without dead ends: 55495 [2022-12-13 18:28:58,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:28:58,741 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 243 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 18:28:58,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 227 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 758 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 18:28:58,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55495 states. [2022-12-13 18:28:59,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55495 to 55478. [2022-12-13 18:28:59,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55478 states, 55477 states have (on average 1.2367107089424447) internal successors, (68609), 55477 states have internal predecessors, (68609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:28:59,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55478 states to 55478 states and 68609 transitions. [2022-12-13 18:28:59,455 INFO L78 Accepts]: Start accepts. Automaton has 55478 states and 68609 transitions. Word has length 266 [2022-12-13 18:28:59,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:28:59,455 INFO L495 AbstractCegarLoop]: Abstraction has 55478 states and 68609 transitions. [2022-12-13 18:28:59,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 2 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:28:59,456 INFO L276 IsEmpty]: Start isEmpty. Operand 55478 states and 68609 transitions. [2022-12-13 18:28:59,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2022-12-13 18:28:59,487 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:28:59,487 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:28:59,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 18:28:59,487 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:28:59,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:28:59,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1868365629, now seen corresponding path program 1 times [2022-12-13 18:28:59,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:28:59,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823198273] [2022-12-13 18:28:59,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:28:59,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:28:59,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:59,844 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 88 proven. 6 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-12-13 18:28:59,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:28:59,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823198273] [2022-12-13 18:28:59,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823198273] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:28:59,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658180824] [2022-12-13 18:28:59,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:28:59,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:28:59,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:28:59,846 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:28:59,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 18:29:00,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:00,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 18:29:00,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:29:00,129 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-12-13 18:29:00,129 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:29:00,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658180824] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:29:00,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:29:00,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-12-13 18:29:00,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870600012] [2022-12-13 18:29:00,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:29:00,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:29:00,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:29:00,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:29:00,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:29:00,131 INFO L87 Difference]: Start difference. First operand 55478 states and 68609 transitions. Second operand has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:29:01,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:29:01,019 INFO L93 Difference]: Finished difference Result 104308 states and 129055 transitions. [2022-12-13 18:29:01,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:29:01,020 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 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 275 [2022-12-13 18:29:01,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:29:01,075 INFO L225 Difference]: With dead ends: 104308 [2022-12-13 18:29:01,075 INFO L226 Difference]: Without dead ends: 49238 [2022-12-13 18:29:01,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:29:01,105 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 210 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 18:29:01,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 382 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 18:29:01,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49238 states. [2022-12-13 18:29:01,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49238 to 49173. [2022-12-13 18:29:01,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49173 states, 49172 states have (on average 1.21685105344505) internal successors, (59835), 49172 states have internal predecessors, (59835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:29:01,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49173 states to 49173 states and 59835 transitions. [2022-12-13 18:29:01,643 INFO L78 Accepts]: Start accepts. Automaton has 49173 states and 59835 transitions. Word has length 275 [2022-12-13 18:29:01,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:29:01,643 INFO L495 AbstractCegarLoop]: Abstraction has 49173 states and 59835 transitions. [2022-12-13 18:29:01,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:29:01,644 INFO L276 IsEmpty]: Start isEmpty. Operand 49173 states and 59835 transitions. [2022-12-13 18:29:01,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2022-12-13 18:29:01,668 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:29:01,668 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:29:01,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 18:29:01,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 18:29:01,870 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:29:01,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:29:01,871 INFO L85 PathProgramCache]: Analyzing trace with hash -282409033, now seen corresponding path program 1 times [2022-12-13 18:29:01,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:29:01,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972818799] [2022-12-13 18:29:01,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:01,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:29:01,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:02,133 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-13 18:29:02,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:29:02,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972818799] [2022-12-13 18:29:02,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972818799] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:29:02,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:29:02,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:29:02,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282943202] [2022-12-13 18:29:02,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:29:02,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:29:02,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:29:02,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:29:02,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:29:02,135 INFO L87 Difference]: Start difference. First operand 49173 states and 59835 transitions. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:29:02,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:29:02,843 INFO L93 Difference]: Finished difference Result 97096 states and 119492 transitions. [2022-12-13 18:29:02,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:29:02,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 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 276 [2022-12-13 18:29:02,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:29:02,886 INFO L225 Difference]: With dead ends: 97096 [2022-12-13 18:29:02,886 INFO L226 Difference]: Without dead ends: 48737 [2022-12-13 18:29:02,907 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 [2022-12-13 18:29:02,908 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 191 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 18:29:02,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 400 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 18:29:02,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48737 states. [2022-12-13 18:29:03,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48737 to 44669. [2022-12-13 18:29:03,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44669 states, 44668 states have (on average 1.180890122682905) internal successors, (52748), 44668 states have internal predecessors, (52748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:29:03,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44669 states to 44669 states and 52748 transitions. [2022-12-13 18:29:03,367 INFO L78 Accepts]: Start accepts. Automaton has 44669 states and 52748 transitions. Word has length 276 [2022-12-13 18:29:03,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:29:03,368 INFO L495 AbstractCegarLoop]: Abstraction has 44669 states and 52748 transitions. [2022-12-13 18:29:03,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:29:03,368 INFO L276 IsEmpty]: Start isEmpty. Operand 44669 states and 52748 transitions. [2022-12-13 18:29:03,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2022-12-13 18:29:03,389 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:29:03,390 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:29:03,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 18:29:03,390 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:29:03,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:29:03,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1024276696, now seen corresponding path program 1 times [2022-12-13 18:29:03,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:29:03,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102696328] [2022-12-13 18:29:03,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:03,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:29:03,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:03,668 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 18:29:03,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:29:03,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102696328] [2022-12-13 18:29:03,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102696328] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:29:03,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:29:03,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:29:03,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010983961] [2022-12-13 18:29:03,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:29:03,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:29:03,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:29:03,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:29:03,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:29:03,670 INFO L87 Difference]: Start difference. First operand 44669 states and 52748 transitions. Second operand has 4 states, 4 states have (on average 70.5) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:29:04,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:29:04,813 INFO L93 Difference]: Finished difference Result 88230 states and 104448 transitions. [2022-12-13 18:29:04,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:29:04,814 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 70.5) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 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 292 [2022-12-13 18:29:04,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:29:04,850 INFO L225 Difference]: With dead ends: 88230 [2022-12-13 18:29:04,851 INFO L226 Difference]: Without dead ends: 43162 [2022-12-13 18:29:04,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:29:04,872 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 544 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 18:29:04,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 59 Invalid, 984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-13 18:29:04,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43162 states. [2022-12-13 18:29:05,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43162 to 34623. [2022-12-13 18:29:05,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34623 states, 34622 states have (on average 1.108081566633932) internal successors, (38364), 34622 states have internal predecessors, (38364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:29:05,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34623 states to 34623 states and 38364 transitions. [2022-12-13 18:29:05,377 INFO L78 Accepts]: Start accepts. Automaton has 34623 states and 38364 transitions. Word has length 292 [2022-12-13 18:29:05,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:29:05,378 INFO L495 AbstractCegarLoop]: Abstraction has 34623 states and 38364 transitions. [2022-12-13 18:29:05,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.5) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:29:05,378 INFO L276 IsEmpty]: Start isEmpty. Operand 34623 states and 38364 transitions. [2022-12-13 18:29:05,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2022-12-13 18:29:05,396 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:29:05,396 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:29:05,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 18:29:05,396 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:29:05,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:29:05,397 INFO L85 PathProgramCache]: Analyzing trace with hash -460493825, now seen corresponding path program 1 times [2022-12-13 18:29:05,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:29:05,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237372191] [2022-12-13 18:29:05,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:05,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:29:05,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:05,729 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 18:29:05,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:29:05,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237372191] [2022-12-13 18:29:05,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237372191] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:29:05,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:29:05,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:29:05,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406498755] [2022-12-13 18:29:05,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:29:05,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:29:05,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:29:05,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:29:05,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:29:05,732 INFO L87 Difference]: Start difference. First operand 34623 states and 38364 transitions. Second operand has 4 states, 4 states have (on average 75.25) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:29:06,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:29:06,779 INFO L93 Difference]: Finished difference Result 60306 states and 66801 transitions. [2022-12-13 18:29:06,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:29:06,780 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 75.25) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 306 [2022-12-13 18:29:06,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:29:06,807 INFO L225 Difference]: With dead ends: 60306 [2022-12-13 18:29:06,807 INFO L226 Difference]: Without dead ends: 36073 [2022-12-13 18:29:06,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:29:06,821 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 338 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 1062 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 18:29:06,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 101 Invalid, 1140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1062 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-13 18:29:06,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36073 states. [2022-12-13 18:29:07,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36073 to 35440. [2022-12-13 18:29:07,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35440 states, 35439 states have (on average 1.106464629363131) internal successors, (39212), 35439 states have internal predecessors, (39212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:29:07,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35440 states to 35440 states and 39212 transitions. [2022-12-13 18:29:07,142 INFO L78 Accepts]: Start accepts. Automaton has 35440 states and 39212 transitions. Word has length 306 [2022-12-13 18:29:07,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:29:07,142 INFO L495 AbstractCegarLoop]: Abstraction has 35440 states and 39212 transitions. [2022-12-13 18:29:07,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.25) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:29:07,142 INFO L276 IsEmpty]: Start isEmpty. Operand 35440 states and 39212 transitions. [2022-12-13 18:29:07,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-12-13 18:29:07,155 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:29:07,155 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:29:07,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 18:29:07,156 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:29:07,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:29:07,156 INFO L85 PathProgramCache]: Analyzing trace with hash -193167971, now seen corresponding path program 1 times [2022-12-13 18:29:07,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:29:07,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141310608] [2022-12-13 18:29:07,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:07,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:29:07,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:07,438 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 110 proven. 6 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-12-13 18:29:07,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:29:07,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141310608] [2022-12-13 18:29:07,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141310608] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:29:07,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748444899] [2022-12-13 18:29:07,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:07,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:29:07,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:29:07,440 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:29:07,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 18:29:07,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:07,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 18:29:07,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:29:07,834 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-12-13 18:29:07,834 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:29:07,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748444899] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:29:07,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:29:07,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-12-13 18:29:07,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071425382] [2022-12-13 18:29:07,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:29:07,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:29:07,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:29:07,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:29:07,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:29:07,836 INFO L87 Difference]: Start difference. First operand 35440 states and 39212 transitions. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:29:08,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:29:08,609 INFO L93 Difference]: Finished difference Result 79427 states and 88064 transitions. [2022-12-13 18:29:08,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:29:08,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 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 320 [2022-12-13 18:29:08,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:29:08,654 INFO L225 Difference]: With dead ends: 79427 [2022-12-13 18:29:08,654 INFO L226 Difference]: Without dead ends: 45618 [2022-12-13 18:29:08,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:29:08,677 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 49 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 18:29:08,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 99 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 18:29:08,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45618 states. [2022-12-13 18:29:09,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45618 to 44598. [2022-12-13 18:29:09,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44598 states, 44597 states have (on average 1.1041101419377986) internal successors, (49240), 44597 states have internal predecessors, (49240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:29:09,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44598 states to 44598 states and 49240 transitions. [2022-12-13 18:29:09,171 INFO L78 Accepts]: Start accepts. Automaton has 44598 states and 49240 transitions. Word has length 320 [2022-12-13 18:29:09,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:29:09,171 INFO L495 AbstractCegarLoop]: Abstraction has 44598 states and 49240 transitions. [2022-12-13 18:29:09,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:29:09,171 INFO L276 IsEmpty]: Start isEmpty. Operand 44598 states and 49240 transitions. [2022-12-13 18:29:09,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2022-12-13 18:29:09,214 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:29:09,214 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:29:09,219 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 18:29:09,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 18:29:09,416 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:29:09,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:29:09,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1121544722, now seen corresponding path program 1 times [2022-12-13 18:29:09,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:29:09,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25938002] [2022-12-13 18:29:09,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:09,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:29:09,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:09,677 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 151 proven. 44 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 18:29:09,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:29:09,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25938002] [2022-12-13 18:29:09,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25938002] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:29:09,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242205923] [2022-12-13 18:29:09,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:09,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:29:09,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:29:09,679 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:29:09,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 18:29:09,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:09,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 18:29:09,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:29:09,966 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-12-13 18:29:09,966 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:29:09,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242205923] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:29:09,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:29:09,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2022-12-13 18:29:09,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857046376] [2022-12-13 18:29:09,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:29:09,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:29:09,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:29:09,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:29:09,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:29:09,969 INFO L87 Difference]: Start difference. First operand 44598 states and 49240 transitions. Second operand has 3 states, 3 states have (on average 99.0) internal successors, (297), 2 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:29:10,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:29:10,366 INFO L93 Difference]: Finished difference Result 102239 states and 112798 transitions. [2022-12-13 18:29:10,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:29:10,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 2 states have internal predecessors, (297), 0 states have call successors, (0), 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 345 [2022-12-13 18:29:10,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:29:10,431 INFO L225 Difference]: With dead ends: 102239 [2022-12-13 18:29:10,431 INFO L226 Difference]: Without dead ends: 67617 [2022-12-13 18:29:10,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:29:10,455 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 200 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:29:10,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 478 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 18:29:10,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67617 states. [2022-12-13 18:29:11,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67617 to 67412. [2022-12-13 18:29:11,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67412 states, 67411 states have (on average 1.1006808977763274) internal successors, (74198), 67411 states have internal predecessors, (74198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:29:11,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67412 states to 67412 states and 74198 transitions. [2022-12-13 18:29:11,190 INFO L78 Accepts]: Start accepts. Automaton has 67412 states and 74198 transitions. Word has length 345 [2022-12-13 18:29:11,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:29:11,190 INFO L495 AbstractCegarLoop]: Abstraction has 67412 states and 74198 transitions. [2022-12-13 18:29:11,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 2 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:29:11,191 INFO L276 IsEmpty]: Start isEmpty. Operand 67412 states and 74198 transitions. [2022-12-13 18:29:11,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2022-12-13 18:29:11,218 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:29:11,218 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:29:11,223 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 18:29:11,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 18:29:11,420 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:29:11,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:29:11,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1368433964, now seen corresponding path program 1 times [2022-12-13 18:29:11,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:29:11,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779365766] [2022-12-13 18:29:11,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:11,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:29:11,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:11,643 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 18:29:11,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:29:11,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779365766] [2022-12-13 18:29:11,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779365766] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:29:11,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:29:11,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:29:11,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451745390] [2022-12-13 18:29:11,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:29:11,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:29:11,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:29:11,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:29:11,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:29:11,645 INFO L87 Difference]: Start difference. First operand 67412 states and 74198 transitions. Second operand has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:29:12,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:29:12,373 INFO L93 Difference]: Finished difference Result 111392 states and 122178 transitions. [2022-12-13 18:29:12,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:29:12,374 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 351 [2022-12-13 18:29:12,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:29:12,418 INFO L225 Difference]: With dead ends: 111392 [2022-12-13 18:29:12,418 INFO L226 Difference]: Without dead ends: 51516 [2022-12-13 18:29:12,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:29:12,436 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 232 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 18:29:12,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 305 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 18:29:12,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51516 states. [2022-12-13 18:29:13,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51516 to 49882. [2022-12-13 18:29:13,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49882 states, 49881 states have (on average 1.0811932399109883) internal successors, (53931), 49881 states have internal predecessors, (53931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:29:13,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49882 states to 49882 states and 53931 transitions. [2022-12-13 18:29:13,118 INFO L78 Accepts]: Start accepts. Automaton has 49882 states and 53931 transitions. Word has length 351 [2022-12-13 18:29:13,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:29:13,118 INFO L495 AbstractCegarLoop]: Abstraction has 49882 states and 53931 transitions. [2022-12-13 18:29:13,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:29:13,119 INFO L276 IsEmpty]: Start isEmpty. Operand 49882 states and 53931 transitions. [2022-12-13 18:29:13,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2022-12-13 18:29:13,160 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:29:13,160 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:29:13,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 18:29:13,160 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:29:13,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:29:13,161 INFO L85 PathProgramCache]: Analyzing trace with hash -355066912, now seen corresponding path program 1 times [2022-12-13 18:29:13,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:29:13,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809550884] [2022-12-13 18:29:13,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:13,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:29:13,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:13,609 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 215 proven. 6 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-12-13 18:29:13,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:29:13,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809550884] [2022-12-13 18:29:13,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809550884] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:29:13,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789311899] [2022-12-13 18:29:13,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:13,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:29:13,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:29:13,610 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:29:13,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 18:29:13,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:13,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 18:29:13,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:29:13,944 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 215 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-12-13 18:29:13,944 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:29:13,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789311899] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:29:13,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:29:13,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2022-12-13 18:29:13,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175671831] [2022-12-13 18:29:13,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:29:13,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:29:13,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:29:13,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:29:13,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:29:13,947 INFO L87 Difference]: Start difference. First operand 49882 states and 53931 transitions. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 2 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) [2022-12-13 18:29:14,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:29:14,568 INFO L93 Difference]: Finished difference Result 129700 states and 139922 transitions. [2022-12-13 18:29:14,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:29:14,568 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 2 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 410 [2022-12-13 18:29:14,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:29:14,648 INFO L225 Difference]: With dead ends: 129700 [2022-12-13 18:29:14,648 INFO L226 Difference]: Without dead ends: 81241 [2022-12-13 18:29:14,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 409 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:29:14,679 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 178 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:29:14,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 474 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 18:29:14,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81241 states. [2022-12-13 18:29:15,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81241 to 79809. [2022-12-13 18:29:15,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79809 states, 79808 states have (on average 1.0766965717722534) internal successors, (85929), 79808 states have internal predecessors, (85929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:29:15,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79809 states to 79809 states and 85929 transitions. [2022-12-13 18:29:15,576 INFO L78 Accepts]: Start accepts. Automaton has 79809 states and 85929 transitions. Word has length 410 [2022-12-13 18:29:15,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:29:15,576 INFO L495 AbstractCegarLoop]: Abstraction has 79809 states and 85929 transitions. [2022-12-13 18:29:15,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 2 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) [2022-12-13 18:29:15,576 INFO L276 IsEmpty]: Start isEmpty. Operand 79809 states and 85929 transitions. [2022-12-13 18:29:15,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2022-12-13 18:29:15,605 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:29:15,605 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:29:15,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-13 18:29:15,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:29:15,807 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:29:15,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:29:15,808 INFO L85 PathProgramCache]: Analyzing trace with hash -13806540, now seen corresponding path program 1 times [2022-12-13 18:29:15,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:29:15,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066941474] [2022-12-13 18:29:15,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:15,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:29:15,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:16,288 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 246 proven. 9 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-12-13 18:29:16,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:29:16,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066941474] [2022-12-13 18:29:16,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066941474] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:29:16,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287953884] [2022-12-13 18:29:16,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:16,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:29:16,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:29:16,289 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:29:16,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 18:29:16,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:16,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 18:29:16,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:29:16,510 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 249 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-12-13 18:29:16,510 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:29:16,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287953884] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:29:16,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:29:16,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-12-13 18:29:16,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274153428] [2022-12-13 18:29:16,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:29:16,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:29:16,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:29:16,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:29:16,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:29:16,512 INFO L87 Difference]: Start difference. First operand 79809 states and 85929 transitions. Second operand has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:29:17,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:29:17,329 INFO L93 Difference]: Finished difference Result 158225 states and 170459 transitions. [2022-12-13 18:29:17,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:29:17,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 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 433 [2022-12-13 18:29:17,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:29:17,393 INFO L225 Difference]: With dead ends: 158225 [2022-12-13 18:29:17,393 INFO L226 Difference]: Without dead ends: 80042 [2022-12-13 18:29:17,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:29:17,425 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 210 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 18:29:17,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 340 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 18:29:17,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80042 states. [2022-12-13 18:29:18,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80042 to 76764. [2022-12-13 18:29:18,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76764 states, 76763 states have (on average 1.0721571590479788) internal successors, (82302), 76763 states have internal predecessors, (82302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:29:18,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76764 states to 76764 states and 82302 transitions. [2022-12-13 18:29:18,178 INFO L78 Accepts]: Start accepts. Automaton has 76764 states and 82302 transitions. Word has length 433 [2022-12-13 18:29:18,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:29:18,178 INFO L495 AbstractCegarLoop]: Abstraction has 76764 states and 82302 transitions. [2022-12-13 18:29:18,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:29:18,178 INFO L276 IsEmpty]: Start isEmpty. Operand 76764 states and 82302 transitions. [2022-12-13 18:29:18,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2022-12-13 18:29:18,208 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:29:18,208 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:29:18,213 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 18:29:18,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:29:18,410 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:29:18,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:29:18,411 INFO L85 PathProgramCache]: Analyzing trace with hash 793479543, now seen corresponding path program 1 times [2022-12-13 18:29:18,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:29:18,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249976754] [2022-12-13 18:29:18,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:18,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:29:18,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:19,367 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2022-12-13 18:29:19,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:29:19,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249976754] [2022-12-13 18:29:19,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249976754] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:29:19,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:29:19,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:29:19,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317792363] [2022-12-13 18:29:19,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:29:19,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:29:19,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:29:19,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:29:19,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:29:19,370 INFO L87 Difference]: Start difference. First operand 76764 states and 82302 transitions. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 2 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:29:20,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:29:20,210 INFO L93 Difference]: Finished difference Result 151903 states and 162908 transitions. [2022-12-13 18:29:20,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:29:20,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 2 states have internal predecessors, (277), 0 states have call successors, (0), 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 435 [2022-12-13 18:29:20,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:29:20,280 INFO L225 Difference]: With dead ends: 151903 [2022-12-13 18:29:20,280 INFO L226 Difference]: Without dead ends: 76562 [2022-12-13 18:29:20,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:29:20,320 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 133 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 18:29:20,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 121 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 18:29:20,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76562 states. [2022-12-13 18:29:21,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76562 to 76561. [2022-12-13 18:29:21,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76561 states, 76560 states have (on average 1.0721917450365726) internal successors, (82087), 76560 states have internal predecessors, (82087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:29:21,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76561 states to 76561 states and 82087 transitions. [2022-12-13 18:29:21,126 INFO L78 Accepts]: Start accepts. Automaton has 76561 states and 82087 transitions. Word has length 435 [2022-12-13 18:29:21,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:29:21,126 INFO L495 AbstractCegarLoop]: Abstraction has 76561 states and 82087 transitions. [2022-12-13 18:29:21,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 2 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:29:21,126 INFO L276 IsEmpty]: Start isEmpty. Operand 76561 states and 82087 transitions. [2022-12-13 18:29:21,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2022-12-13 18:29:21,154 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:29:21,154 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:29:21,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 18:29:21,154 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:29:21,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:29:21,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1408356606, now seen corresponding path program 1 times [2022-12-13 18:29:21,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:29:21,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660611449] [2022-12-13 18:29:21,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:21,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:29:21,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:21,535 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 148 proven. 6 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2022-12-13 18:29:21,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:29:21,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660611449] [2022-12-13 18:29:21,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660611449] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:29:21,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574292161] [2022-12-13 18:29:21,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:21,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:29:21,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:29:21,536 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:29:21,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 18:29:21,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:21,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 779 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 18:29:21,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:29:21,901 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 424 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-12-13 18:29:21,901 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:29:21,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574292161] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:29:21,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:29:21,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-12-13 18:29:21,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824629600] [2022-12-13 18:29:21,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:29:21,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:29:21,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:29:21,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:29:21,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:29:21,902 INFO L87 Difference]: Start difference. First operand 76561 states and 82087 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) [2022-12-13 18:29:22,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:29:22,507 INFO L93 Difference]: Finished difference Result 207906 states and 223143 transitions. [2022-12-13 18:29:22,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:29:22,508 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 441 [2022-12-13 18:29:22,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:29:22,629 INFO L225 Difference]: With dead ends: 207906 [2022-12-13 18:29:22,629 INFO L226 Difference]: Without dead ends: 134396 [2022-12-13 18:29:22,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 440 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:29:22,670 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 195 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:29:22,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 475 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 18:29:22,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134396 states. [2022-12-13 18:29:23,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134396 to 130715. [2022-12-13 18:29:23,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130715 states, 130714 states have (on average 1.0736340407301437) internal successors, (140339), 130714 states have internal predecessors, (140339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:29:24,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130715 states to 130715 states and 140339 transitions. [2022-12-13 18:29:24,009 INFO L78 Accepts]: Start accepts. Automaton has 130715 states and 140339 transitions. Word has length 441 [2022-12-13 18:29:24,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:29:24,009 INFO L495 AbstractCegarLoop]: Abstraction has 130715 states and 140339 transitions. [2022-12-13 18:29:24,010 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) [2022-12-13 18:29:24,010 INFO L276 IsEmpty]: Start isEmpty. Operand 130715 states and 140339 transitions. [2022-12-13 18:29:24,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2022-12-13 18:29:24,057 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:29:24,057 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:29:24,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-13 18:29:24,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:29:24,259 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:29:24,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:29:24,261 INFO L85 PathProgramCache]: Analyzing trace with hash 300187614, now seen corresponding path program 1 times [2022-12-13 18:29:24,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:29:24,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489574622] [2022-12-13 18:29:24,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:24,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:29:24,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:24,688 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 122 proven. 6 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2022-12-13 18:29:24,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:29:24,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489574622] [2022-12-13 18:29:24,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489574622] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:29:24,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813905616] [2022-12-13 18:29:24,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:24,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:29:24,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:29:24,689 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:29:24,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 18:29:24,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:24,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 18:29:24,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:29:25,123 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 384 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-12-13 18:29:25,123 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:29:25,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813905616] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:29:25,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:29:25,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-12-13 18:29:25,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459047994] [2022-12-13 18:29:25,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:29:25,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:29:25,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:29:25,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:29:25,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:29:25,126 INFO L87 Difference]: Start difference. First operand 130715 states and 140339 transitions. Second operand has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:29:26,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:29:26,250 INFO L93 Difference]: Finished difference Result 271636 states and 292416 transitions. [2022-12-13 18:29:26,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:29:26,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 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 460 [2022-12-13 18:29:26,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:29:26,383 INFO L225 Difference]: With dead ends: 271636 [2022-12-13 18:29:26,383 INFO L226 Difference]: Without dead ends: 142344 [2022-12-13 18:29:26,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 459 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:29:26,436 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 141 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 18:29:26,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 99 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 18:29:26,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142344 states. [2022-12-13 18:29:28,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142344 to 134586. [2022-12-13 18:29:28,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134586 states, 134585 states have (on average 1.0728387264554) internal successors, (144388), 134585 states have internal predecessors, (144388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:29:28,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134586 states to 134586 states and 144388 transitions. [2022-12-13 18:29:28,273 INFO L78 Accepts]: Start accepts. Automaton has 134586 states and 144388 transitions. Word has length 460 [2022-12-13 18:29:28,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:29:28,273 INFO L495 AbstractCegarLoop]: Abstraction has 134586 states and 144388 transitions. [2022-12-13 18:29:28,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:29:28,273 INFO L276 IsEmpty]: Start isEmpty. Operand 134586 states and 144388 transitions. [2022-12-13 18:29:28,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2022-12-13 18:29:28,314 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:29:28,314 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:29:28,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-13 18:29:28,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-12-13 18:29:28,519 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:29:28,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:29:28,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1702479933, now seen corresponding path program 1 times [2022-12-13 18:29:28,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:29:28,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888592528] [2022-12-13 18:29:28,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:28,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:29:28,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:30,151 INFO L134 CoverageAnalysis]: Checked inductivity of 503 backedges. 276 proven. 227 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:29:30,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:29:30,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888592528] [2022-12-13 18:29:30,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888592528] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:29:30,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365021870] [2022-12-13 18:29:30,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:30,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:29:30,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:29:30,152 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:29:30,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 18:29:30,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:30,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 18:29:30,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:29:30,548 INFO L134 CoverageAnalysis]: Checked inductivity of 503 backedges. 429 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-12-13 18:29:30,548 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:29:30,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365021870] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:29:30,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:29:30,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-12-13 18:29:30,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191011796] [2022-12-13 18:29:30,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:29:30,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:29:30,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:29:30,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:29:30,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-12-13 18:29:30,550 INFO L87 Difference]: Start difference. First operand 134586 states and 144388 transitions. Second operand has 4 states, 4 states have (on average 97.5) internal successors, (390), 4 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:29:32,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:29:32,036 INFO L93 Difference]: Finished difference Result 296273 states and 318057 transitions. [2022-12-13 18:29:32,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:29:32,036 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 97.5) internal successors, (390), 4 states have internal predecessors, (390), 0 states have call successors, (0), 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 463 [2022-12-13 18:29:32,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:29:32,171 INFO L225 Difference]: With dead ends: 296273 [2022-12-13 18:29:32,171 INFO L226 Difference]: Without dead ends: 148088 [2022-12-13 18:29:32,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 461 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-12-13 18:29:32,225 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 375 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1290 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 1368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 18:29:32,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 344 Invalid, 1368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1290 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 18:29:32,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148088 states. [2022-12-13 18:29:33,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148088 to 137068. [2022-12-13 18:29:33,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137068 states, 137067 states have (on average 1.0556516156332305) internal successors, (144695), 137067 states have internal predecessors, (144695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:29:33,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137068 states to 137068 states and 144695 transitions. [2022-12-13 18:29:33,828 INFO L78 Accepts]: Start accepts. Automaton has 137068 states and 144695 transitions. Word has length 463 [2022-12-13 18:29:33,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:29:33,828 INFO L495 AbstractCegarLoop]: Abstraction has 137068 states and 144695 transitions. [2022-12-13 18:29:33,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 97.5) internal successors, (390), 4 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:29:33,829 INFO L276 IsEmpty]: Start isEmpty. Operand 137068 states and 144695 transitions. [2022-12-13 18:29:33,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2022-12-13 18:29:33,853 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:29:33,853 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:29:33,859 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 18:29:34,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-12-13 18:29:34,056 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:29:34,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:29:34,058 INFO L85 PathProgramCache]: Analyzing trace with hash -822348032, now seen corresponding path program 1 times [2022-12-13 18:29:34,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:29:34,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618561840] [2022-12-13 18:29:34,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:34,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:29:34,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:34,304 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 403 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2022-12-13 18:29:34,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:29:34,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618561840] [2022-12-13 18:29:34,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618561840] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:29:34,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:29:34,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:29:34,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686259294] [2022-12-13 18:29:34,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:29:34,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:29:34,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:29:34,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:29:34,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:29:34,306 INFO L87 Difference]: Start difference. First operand 137068 states and 144695 transitions. Second operand has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 2 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:29:35,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:29:35,218 INFO L93 Difference]: Finished difference Result 272299 states and 287496 transitions. [2022-12-13 18:29:35,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:29:35,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 2 states have internal predecessors, (307), 0 states have call successors, (0), 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 493 [2022-12-13 18:29:35,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:29:35,363 INFO L225 Difference]: With dead ends: 272299 [2022-12-13 18:29:35,363 INFO L226 Difference]: Without dead ends: 137060 [2022-12-13 18:29:35,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:29:35,411 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 201 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:29:35,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 29 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 18:29:35,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137060 states. [2022-12-13 18:29:37,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137060 to 137056. [2022-12-13 18:29:37,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137056 states, 137055 states have (on average 1.0555981175440516) internal successors, (144675), 137055 states have internal predecessors, (144675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:29:37,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137056 states to 137056 states and 144675 transitions. [2022-12-13 18:29:37,501 INFO L78 Accepts]: Start accepts. Automaton has 137056 states and 144675 transitions. Word has length 493 [2022-12-13 18:29:37,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:29:37,501 INFO L495 AbstractCegarLoop]: Abstraction has 137056 states and 144675 transitions. [2022-12-13 18:29:37,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 2 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:29:37,501 INFO L276 IsEmpty]: Start isEmpty. Operand 137056 states and 144675 transitions. [2022-12-13 18:29:37,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2022-12-13 18:29:37,536 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:29:37,536 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:29:37,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 18:29:37,536 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:29:37,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:29:37,537 INFO L85 PathProgramCache]: Analyzing trace with hash -969263422, now seen corresponding path program 1 times [2022-12-13 18:29:37,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:29:37,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503296160] [2022-12-13 18:29:37,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:37,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:29:37,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:38,220 INFO L134 CoverageAnalysis]: Checked inductivity of 622 backedges. 168 proven. 6 refuted. 0 times theorem prover too weak. 448 trivial. 0 not checked. [2022-12-13 18:29:38,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:29:38,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503296160] [2022-12-13 18:29:38,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503296160] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:29:38,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226020738] [2022-12-13 18:29:38,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:38,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:29:38,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:29:38,221 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:29:38,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 18:29:38,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:38,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 871 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 18:29:38,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:29:38,610 INFO L134 CoverageAnalysis]: Checked inductivity of 622 backedges. 519 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-12-13 18:29:38,611 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:29:38,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226020738] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:29:38,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:29:38,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-12-13 18:29:38,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541633250] [2022-12-13 18:29:38,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:29:38,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:29:38,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:29:38,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:29:38,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:29:38,612 INFO L87 Difference]: Start difference. First operand 137056 states and 144675 transitions. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:29:39,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:29:39,472 INFO L93 Difference]: Finished difference Result 352895 states and 372374 transitions. [2022-12-13 18:29:39,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:29:39,473 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 499 [2022-12-13 18:29:39,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:29:39,827 INFO L225 Difference]: With dead ends: 352895 [2022-12-13 18:29:39,828 INFO L226 Difference]: Without dead ends: 214014 [2022-12-13 18:29:39,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 498 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:29:39,857 INFO L413 NwaCegarLoop]: 506 mSDtfsCounter, 182 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:29:39,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 743 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 18:29:39,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214014 states. [2022-12-13 18:29:41,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214014 to 192615. [2022-12-13 18:29:41,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192615 states, 192614 states have (on average 1.05244167090658) internal successors, (202715), 192614 states have internal predecessors, (202715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:29:42,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192615 states to 192615 states and 202715 transitions. [2022-12-13 18:29:42,037 INFO L78 Accepts]: Start accepts. Automaton has 192615 states and 202715 transitions. Word has length 499 [2022-12-13 18:29:42,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:29:42,037 INFO L495 AbstractCegarLoop]: Abstraction has 192615 states and 202715 transitions. [2022-12-13 18:29:42,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:29:42,038 INFO L276 IsEmpty]: Start isEmpty. Operand 192615 states and 202715 transitions. [2022-12-13 18:29:42,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2022-12-13 18:29:42,067 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:29:42,067 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:29:42,073 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 18:29:42,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-12-13 18:29:42,269 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:29:42,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:29:42,270 INFO L85 PathProgramCache]: Analyzing trace with hash -2009661383, now seen corresponding path program 1 times [2022-12-13 18:29:42,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:29:42,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108141334] [2022-12-13 18:29:42,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:42,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:29:42,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:43,098 INFO L134 CoverageAnalysis]: Checked inductivity of 779 backedges. 487 proven. 0 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2022-12-13 18:29:43,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:29:43,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108141334] [2022-12-13 18:29:43,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108141334] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:29:43,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:29:43,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:29:43,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521535141] [2022-12-13 18:29:43,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:29:43,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:29:43,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:29:43,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:29:43,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:29:43,101 INFO L87 Difference]: Start difference. First operand 192615 states and 202715 transitions. Second operand has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:29:44,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:29:44,451 INFO L93 Difference]: Finished difference Result 384257 states and 404444 transitions. [2022-12-13 18:29:44,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:29:44,451 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 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 506 [2022-12-13 18:29:44,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:29:44,619 INFO L225 Difference]: With dead ends: 384257 [2022-12-13 18:29:44,619 INFO L226 Difference]: Without dead ends: 193471 [2022-12-13 18:29:44,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:29:44,682 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 157 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 18:29:44,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 323 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 18:29:44,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193471 states. [2022-12-13 18:29:46,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193471 to 165971. [2022-12-13 18:29:46,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165971 states, 165970 states have (on average 1.0543290956196902) internal successors, (174987), 165970 states have internal predecessors, (174987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:29:46,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165971 states to 165971 states and 174987 transitions. [2022-12-13 18:29:46,788 INFO L78 Accepts]: Start accepts. Automaton has 165971 states and 174987 transitions. Word has length 506 [2022-12-13 18:29:46,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:29:46,788 INFO L495 AbstractCegarLoop]: Abstraction has 165971 states and 174987 transitions. [2022-12-13 18:29:46,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:29:46,789 INFO L276 IsEmpty]: Start isEmpty. Operand 165971 states and 174987 transitions. [2022-12-13 18:29:46,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2022-12-13 18:29:46,812 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:29:46,813 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:29:46,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-13 18:29:46,813 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:29:46,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:29:46,813 INFO L85 PathProgramCache]: Analyzing trace with hash -888754209, now seen corresponding path program 1 times [2022-12-13 18:29:46,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:29:46,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989427059] [2022-12-13 18:29:46,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:46,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:29:46,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:48,580 INFO L134 CoverageAnalysis]: Checked inductivity of 704 backedges. 395 proven. 309 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:29:48,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:29:48,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989427059] [2022-12-13 18:29:48,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989427059] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:29:48,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076362526] [2022-12-13 18:29:48,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:48,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:29:48,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:29:48,582 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:29:48,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 18:29:48,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:48,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 875 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 18:29:48,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:29:49,051 INFO L134 CoverageAnalysis]: Checked inductivity of 704 backedges. 590 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-12-13 18:29:49,051 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:29:49,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076362526] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:29:49,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:29:49,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2022-12-13 18:29:49,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764999467] [2022-12-13 18:29:49,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:29:49,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:29:49,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:29:49,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:29:49,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-12-13 18:29:49,054 INFO L87 Difference]: Start difference. First operand 165971 states and 174987 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:29:50,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:29:50,587 INFO L93 Difference]: Finished difference Result 427022 states and 450316 transitions. [2022-12-13 18:29:50,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:29:50,588 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 0 states have call successors, (0), 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 508 [2022-12-13 18:29:50,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:29:50,892 INFO L225 Difference]: With dead ends: 427022 [2022-12-13 18:29:50,892 INFO L226 Difference]: Without dead ends: 262880 [2022-12-13 18:29:50,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 506 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-12-13 18:29:50,984 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 367 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 18:29:50,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 482 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 18:29:51,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262880 states. [2022-12-13 18:29:53,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262880 to 220827. [2022-12-13 18:29:54,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220827 states, 220826 states have (on average 1.0531187450753081) internal successors, (232556), 220826 states have internal predecessors, (232556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:29:54,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220827 states to 220827 states and 232556 transitions. [2022-12-13 18:29:54,391 INFO L78 Accepts]: Start accepts. Automaton has 220827 states and 232556 transitions. Word has length 508 [2022-12-13 18:29:54,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:29:54,391 INFO L495 AbstractCegarLoop]: Abstraction has 220827 states and 232556 transitions. [2022-12-13 18:29:54,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:29:54,391 INFO L276 IsEmpty]: Start isEmpty. Operand 220827 states and 232556 transitions. [2022-12-13 18:29:54,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 555 [2022-12-13 18:29:54,425 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:29:54,425 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:29:54,431 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 18:29:54,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-12-13 18:29:54,626 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:29:54,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:29:54,628 INFO L85 PathProgramCache]: Analyzing trace with hash -639104079, now seen corresponding path program 1 times [2022-12-13 18:29:54,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:29:54,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342696724] [2022-12-13 18:29:54,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:54,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:29:54,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:55,273 INFO L134 CoverageAnalysis]: Checked inductivity of 823 backedges. 185 proven. 6 refuted. 0 times theorem prover too weak. 632 trivial. 0 not checked. [2022-12-13 18:29:55,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:29:55,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342696724] [2022-12-13 18:29:55,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342696724] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:29:55,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054013415] [2022-12-13 18:29:55,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:55,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:29:55,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:29:55,275 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:29:55,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 18:29:55,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:55,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 18:29:55,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:29:55,635 INFO L134 CoverageAnalysis]: Checked inductivity of 823 backedges. 566 proven. 0 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2022-12-13 18:29:55,636 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:29:55,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054013415] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:29:55,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:29:55,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-12-13 18:29:55,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440369568] [2022-12-13 18:29:55,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:29:55,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:29:55,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:29:55,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:29:55,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:29:55,638 INFO L87 Difference]: Start difference. First operand 220827 states and 232556 transitions. Second operand has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:29:57,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:29:57,146 INFO L93 Difference]: Finished difference Result 499293 states and 525094 transitions. [2022-12-13 18:29:57,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:29:57,147 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 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 554 [2022-12-13 18:29:57,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:29:57,436 INFO L225 Difference]: With dead ends: 499293 [2022-12-13 18:29:57,436 INFO L226 Difference]: Without dead ends: 280295 [2022-12-13 18:29:57,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 556 GetRequests, 553 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:29:57,522 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 226 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:29:57,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 691 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 18:29:57,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280295 states. [2022-12-13 18:30:00,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280295 to 270128. [2022-12-13 18:30:00,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270128 states, 270127 states have (on average 1.0496470178841804) internal successors, (283538), 270127 states have internal predecessors, (283538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:30:00,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270128 states to 270128 states and 283538 transitions. [2022-12-13 18:30:00,818 INFO L78 Accepts]: Start accepts. Automaton has 270128 states and 283538 transitions. Word has length 554 [2022-12-13 18:30:00,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:30:00,818 INFO L495 AbstractCegarLoop]: Abstraction has 270128 states and 283538 transitions. [2022-12-13 18:30:00,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:30:00,818 INFO L276 IsEmpty]: Start isEmpty. Operand 270128 states and 283538 transitions. [2022-12-13 18:30:00,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 567 [2022-12-13 18:30:00,862 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:30:00,862 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:30:00,868 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 18:30:01,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-12-13 18:30:01,064 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:30:01,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:30:01,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1072913499, now seen corresponding path program 1 times [2022-12-13 18:30:01,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:30:01,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783888811] [2022-12-13 18:30:01,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:30:01,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:30:01,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:01,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1070 backedges. 222 proven. 6 refuted. 0 times theorem prover too weak. 842 trivial. 0 not checked. [2022-12-13 18:30:01,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:30:01,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783888811] [2022-12-13 18:30:01,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783888811] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:30:01,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341764529] [2022-12-13 18:30:01,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:30:01,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:30:01,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:30:01,853 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:30:01,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 18:30:02,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:02,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 18:30:02,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:30:02,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1070 backedges. 558 proven. 191 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2022-12-13 18:30:02,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:30:02,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1070 backedges. 558 proven. 191 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2022-12-13 18:30:02,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341764529] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:30:02,624 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:30:02,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-12-13 18:30:02,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141980350] [2022-12-13 18:30:02,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:30:02,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:30:02,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:30:02,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:30:02,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:30:02,628 INFO L87 Difference]: Start difference. First operand 270128 states and 283538 transitions. Second operand has 6 states, 6 states have (on average 67.83333333333333) internal successors, (407), 5 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:30:07,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:30:07,321 INFO L93 Difference]: Finished difference Result 866547 states and 910820 transitions. [2022-12-13 18:30:07,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 18:30:07,322 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 67.83333333333333) internal successors, (407), 5 states have internal predecessors, (407), 0 states have call successors, (0), 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 566 [2022-12-13 18:30:07,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:30:08,009 INFO L225 Difference]: With dead ends: 866547 [2022-12-13 18:30:08,009 INFO L226 Difference]: Without dead ends: 592545 [2022-12-13 18:30:08,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1140 GetRequests, 1129 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2022-12-13 18:30:08,118 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 2326 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 3438 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2326 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 3703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 3438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:30:08,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2326 Valid, 221 Invalid, 3703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 3438 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-12-13 18:30:08,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592545 states. [2022-12-13 18:30:14,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592545 to 551786. [2022-12-13 18:30:14,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551786 states, 551785 states have (on average 1.0514457623893365) internal successors, (580172), 551785 states have internal predecessors, (580172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:30:15,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551786 states to 551786 states and 580172 transitions. [2022-12-13 18:30:15,450 INFO L78 Accepts]: Start accepts. Automaton has 551786 states and 580172 transitions. Word has length 566 [2022-12-13 18:30:15,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:30:15,450 INFO L495 AbstractCegarLoop]: Abstraction has 551786 states and 580172 transitions. [2022-12-13 18:30:15,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 67.83333333333333) internal successors, (407), 5 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:30:15,450 INFO L276 IsEmpty]: Start isEmpty. Operand 551786 states and 580172 transitions. [2022-12-13 18:30:15,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 716 [2022-12-13 18:30:15,543 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:30:15,543 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:30:15,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 18:30:15,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:30:15,745 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:30:15,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:30:15,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1250059391, now seen corresponding path program 1 times [2022-12-13 18:30:15,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:30:15,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774645900] [2022-12-13 18:30:15,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:30:15,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:30:15,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:16,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1496 backedges. 508 proven. 0 refuted. 0 times theorem prover too weak. 988 trivial. 0 not checked. [2022-12-13 18:30:16,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:30:16,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774645900] [2022-12-13 18:30:16,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774645900] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:30:16,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:30:16,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:30:16,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665397723] [2022-12-13 18:30:16,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:30:16,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:30:16,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:30:16,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:30:16,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:30:16,755 INFO L87 Difference]: Start difference. First operand 551786 states and 580172 transitions. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 2 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:30:20,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:30:20,042 INFO L93 Difference]: Finished difference Result 1102353 states and 1159099 transitions. [2022-12-13 18:30:20,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:30:20,043 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 2 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 715 [2022-12-13 18:30:20,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:30:20,672 INFO L225 Difference]: With dead ends: 1102353 [2022-12-13 18:30:20,672 INFO L226 Difference]: Without dead ends: 551787 [2022-12-13 18:30:20,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:30:20,971 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 70 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 18:30:20,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 116 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 18:30:21,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551787 states. [2022-12-13 18:30:27,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551787 to 551786. [2022-12-13 18:30:27,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551786 states, 551785 states have (on average 1.0514403254890945) internal successors, (580169), 551785 states have internal predecessors, (580169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:30:28,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551786 states to 551786 states and 580169 transitions. [2022-12-13 18:30:28,177 INFO L78 Accepts]: Start accepts. Automaton has 551786 states and 580169 transitions. Word has length 715 [2022-12-13 18:30:28,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:30:28,178 INFO L495 AbstractCegarLoop]: Abstraction has 551786 states and 580169 transitions. [2022-12-13 18:30:28,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 2 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:30:28,178 INFO L276 IsEmpty]: Start isEmpty. Operand 551786 states and 580169 transitions. [2022-12-13 18:30:28,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 727 [2022-12-13 18:30:28,490 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:30:28,490 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:30:28,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-13 18:30:28,491 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:30:28,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:30:28,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1488807218, now seen corresponding path program 1 times [2022-12-13 18:30:28,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:30:28,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55405115] [2022-12-13 18:30:28,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:30:28,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:30:28,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:28,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1798 backedges. 810 proven. 0 refuted. 0 times theorem prover too weak. 988 trivial. 0 not checked. [2022-12-13 18:30:28,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:30:28,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55405115] [2022-12-13 18:30:28,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55405115] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:30:28,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:30:28,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:30:28,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097636132] [2022-12-13 18:30:28,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:30:28,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:30:28,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:30:28,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:30:28,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:30:28,977 INFO L87 Difference]: Start difference. First operand 551786 states and 580169 transitions. Second operand has 4 states, 4 states have (on average 89.0) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:30:33,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:30:33,373 INFO L93 Difference]: Finished difference Result 1255945 states and 1320360 transitions. [2022-12-13 18:30:33,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:30:33,374 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 89.0) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 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 726 [2022-12-13 18:30:33,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:30:34,289 INFO L225 Difference]: With dead ends: 1255945 [2022-12-13 18:30:34,289 INFO L226 Difference]: Without dead ends: 705176 [2022-12-13 18:30:34,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:30:34,511 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 330 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 18:30:34,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 387 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 654 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 18:30:35,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705176 states. [2022-12-13 18:30:42,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705176 to 663053. [2022-12-13 18:30:42,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663053 states, 663052 states have (on average 1.0519883810017918) internal successors, (697523), 663052 states have internal predecessors, (697523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:30:43,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663053 states to 663053 states and 697523 transitions. [2022-12-13 18:30:43,431 INFO L78 Accepts]: Start accepts. Automaton has 663053 states and 697523 transitions. Word has length 726 [2022-12-13 18:30:43,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:30:43,431 INFO L495 AbstractCegarLoop]: Abstraction has 663053 states and 697523 transitions. [2022-12-13 18:30:43,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.0) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:30:43,431 INFO L276 IsEmpty]: Start isEmpty. Operand 663053 states and 697523 transitions. [2022-12-13 18:30:43,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 754 [2022-12-13 18:30:43,788 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:30:43,788 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:30:43,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-12-13 18:30:43,788 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:30:43,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:30:43,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1619668734, now seen corresponding path program 1 times [2022-12-13 18:30:43,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:30:43,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031979549] [2022-12-13 18:30:43,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:30:43,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:30:43,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:44,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1906 backedges. 1119 proven. 175 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2022-12-13 18:30:44,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:30:44,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031979549] [2022-12-13 18:30:44,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031979549] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:30:44,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208680429] [2022-12-13 18:30:44,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:30:44,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:30:44,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:30:44,728 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:30:44,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e91ae8e-a063-497d-afb7-829dcd025c99/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 18:30:45,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:45,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 1210 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 18:30:45,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:30:45,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1906 backedges. 1044 proven. 0 refuted. 0 times theorem prover too weak. 862 trivial. 0 not checked. [2022-12-13 18:30:45,300 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:30:45,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208680429] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:30:45,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:30:45,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-12-13 18:30:45,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599458184] [2022-12-13 18:30:45,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:30:45,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:30:45,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:30:45,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:30:45,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:30:45,301 INFO L87 Difference]: Start difference. First operand 663053 states and 697523 transitions. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 2 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:30:50,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:30:50,549 INFO L93 Difference]: Finished difference Result 1893933 states and 1993273 transitions. [2022-12-13 18:30:50,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:30:50,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 2 states have internal predecessors, (332), 0 states have call successors, (0), 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 753 [2022-12-13 18:30:50,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:30:52,176 INFO L225 Difference]: With dead ends: 1893933 [2022-12-13 18:30:52,176 INFO L226 Difference]: Without dead ends: 1231484 [2022-12-13 18:30:52,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 756 GetRequests, 752 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:30:52,410 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 171 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:30:52,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 601 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:30:53,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231484 states.