./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem11_label59.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22110852-d9fc-4c27-a4ca-f34dfc5fdff5/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22110852-d9fc-4c27-a4ca-f34dfc5fdff5/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22110852-d9fc-4c27-a4ca-f34dfc5fdff5/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22110852-d9fc-4c27-a4ca-f34dfc5fdff5/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem11_label59.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22110852-d9fc-4c27-a4ca-f34dfc5fdff5/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22110852-d9fc-4c27-a4ca-f34dfc5fdff5/bin/uautomizer-J5u9QxTXDZ --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b318f94936d789f3e225c0b031e22ed136ba6b0572610da57c85f0ad4ebaa0a1 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:44:16,780 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:44:16,782 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:44:16,835 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:44:16,836 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:44:16,841 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:44:16,844 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:44:16,851 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:44:16,853 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:44:16,861 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:44:16,862 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:44:16,865 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:44:16,865 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:44:16,869 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:44:16,871 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:44:16,872 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:44:16,873 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:44:16,874 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:44:16,876 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:44:16,882 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:44:16,884 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:44:16,885 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:44:16,890 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:44:16,891 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:44:16,900 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:44:16,901 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:44:16,901 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:44:16,904 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:44:16,904 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:44:16,905 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:44:16,906 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:44:16,908 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:44:16,910 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:44:16,911 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:44:16,912 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:44:16,912 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:44:16,913 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:44:16,913 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:44:16,913 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:44:16,914 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:44:16,915 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:44:16,916 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22110852-d9fc-4c27-a4ca-f34dfc5fdff5/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:44:16,957 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:44:16,957 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:44:16,958 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:44:16,958 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:44:16,959 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:44:16,959 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:44:16,960 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:44:16,960 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:44:16,960 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:44:16,960 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:44:16,961 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:44:16,962 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:44:16,962 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:44:16,962 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:44:16,962 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:44:16,962 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:44:16,963 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:44:16,963 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:44:16,963 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:44:16,963 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:44:16,963 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:44:16,964 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:44:16,964 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:44:16,964 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:44:16,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:44:16,964 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:44:16,965 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:44:16,965 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:44:16,965 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:44:16,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:44:16,965 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:44:16,965 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:44:16,966 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:44:16,966 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22110852-d9fc-4c27-a4ca-f34dfc5fdff5/bin/uautomizer-J5u9QxTXDZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22110852-d9fc-4c27-a4ca-f34dfc5fdff5/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b318f94936d789f3e225c0b031e22ed136ba6b0572610da57c85f0ad4ebaa0a1 [2022-10-17 10:44:17,271 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:44:17,295 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:44:17,299 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:44:17,301 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:44:17,302 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:44:17,303 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22110852-d9fc-4c27-a4ca-f34dfc5fdff5/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/eca-rers2012/Problem11_label59.c [2022-10-17 10:44:17,369 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22110852-d9fc-4c27-a4ca-f34dfc5fdff5/bin/uautomizer-J5u9QxTXDZ/data/5b03430f1/f6d12c7bb645463db2bebe5069659bca/FLAG0e01ac3b3 [2022-10-17 10:44:17,971 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:44:17,972 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22110852-d9fc-4c27-a4ca-f34dfc5fdff5/sv-benchmarks/c/eca-rers2012/Problem11_label59.c [2022-10-17 10:44:17,996 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22110852-d9fc-4c27-a4ca-f34dfc5fdff5/bin/uautomizer-J5u9QxTXDZ/data/5b03430f1/f6d12c7bb645463db2bebe5069659bca/FLAG0e01ac3b3 [2022-10-17 10:44:18,178 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22110852-d9fc-4c27-a4ca-f34dfc5fdff5/bin/uautomizer-J5u9QxTXDZ/data/5b03430f1/f6d12c7bb645463db2bebe5069659bca [2022-10-17 10:44:18,180 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:44:18,181 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:44:18,183 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:44:18,183 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:44:18,187 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:44:18,188 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:44:18" (1/1) ... [2022-10-17 10:44:18,189 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bec61f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:44:18, skipping insertion in model container [2022-10-17 10:44:18,189 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:44:18" (1/1) ... [2022-10-17 10:44:18,197 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:44:18,249 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:44:18,593 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22110852-d9fc-4c27-a4ca-f34dfc5fdff5/sv-benchmarks/c/eca-rers2012/Problem11_label59.c[8515,8528] [2022-10-17 10:44:18,807 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:44:18,815 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:44:18,852 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22110852-d9fc-4c27-a4ca-f34dfc5fdff5/sv-benchmarks/c/eca-rers2012/Problem11_label59.c[8515,8528] [2022-10-17 10:44:19,066 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:44:19,083 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:44:19,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:44:19 WrapperNode [2022-10-17 10:44:19,084 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:44:19,086 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:44:19,087 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:44:19,087 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:44:19,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:44:19" (1/1) ... [2022-10-17 10:44:19,126 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:44:19" (1/1) ... [2022-10-17 10:44:19,272 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 999 [2022-10-17 10:44:19,273 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:44:19,273 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:44:19,273 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:44:19,274 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:44:19,283 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:44:19" (1/1) ... [2022-10-17 10:44:19,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:44:19" (1/1) ... [2022-10-17 10:44:19,299 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:44:19" (1/1) ... [2022-10-17 10:44:19,300 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:44:19" (1/1) ... [2022-10-17 10:44:19,346 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:44:19" (1/1) ... [2022-10-17 10:44:19,359 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:44:19" (1/1) ... [2022-10-17 10:44:19,378 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:44:19" (1/1) ... [2022-10-17 10:44:19,390 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:44:19" (1/1) ... [2022-10-17 10:44:19,407 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:44:19,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:44:19,408 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:44:19,409 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:44:19,410 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:44:19" (1/1) ... [2022-10-17 10:44:19,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:44:19,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22110852-d9fc-4c27-a4ca-f34dfc5fdff5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:44:19,479 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22110852-d9fc-4c27-a4ca-f34dfc5fdff5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:44:19,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22110852-d9fc-4c27-a4ca-f34dfc5fdff5/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:44:19,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:44:19,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:44:19,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:44:19,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:44:19,625 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:44:19,627 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:44:21,532 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:44:21,550 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:44:21,550 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 10:44:21,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:44:21 BoogieIcfgContainer [2022-10-17 10:44:21,554 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:44:21,556 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:44:21,556 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:44:21,560 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:44:21,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:44:18" (1/3) ... [2022-10-17 10:44:21,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6435339b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:44:21, skipping insertion in model container [2022-10-17 10:44:21,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:44:19" (2/3) ... [2022-10-17 10:44:21,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6435339b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:44:21, skipping insertion in model container [2022-10-17 10:44:21,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:44:21" (3/3) ... [2022-10-17 10:44:21,563 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label59.c [2022-10-17 10:44:21,586 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:44:21,586 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:44:21,667 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:44:21,674 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;@536c18c9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:44:21,674 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:44:21,680 INFO L276 IsEmpty]: Start isEmpty. Operand has 283 states, 281 states have (on average 1.7153024911032029) internal successors, (482), 282 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:44:21,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-10-17 10:44:21,690 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:44:21,690 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] [2022-10-17 10:44:21,691 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:44:21,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:44:21,697 INFO L85 PathProgramCache]: Analyzing trace with hash 118092897, now seen corresponding path program 1 times [2022-10-17 10:44:21,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:44:21,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155536082] [2022-10-17 10:44:21,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:44:21,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:44:21,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:22,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:44:22,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:44:22,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155536082] [2022-10-17 10:44:22,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155536082] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:44:22,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:44:22,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:44:22,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662034508] [2022-10-17 10:44:22,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:44:22,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:44:22,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:44:22,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:44:22,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:44:22,301 INFO L87 Difference]: Start difference. First operand has 283 states, 281 states have (on average 1.7153024911032029) internal successors, (482), 282 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:44:23,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:44:23,727 INFO L93 Difference]: Finished difference Result 763 states and 1352 transitions. [2022-10-17 10:44:23,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:44:23,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2022-10-17 10:44:23,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:44:23,744 INFO L225 Difference]: With dead ends: 763 [2022-10-17 10:44:23,744 INFO L226 Difference]: Without dead ends: 416 [2022-10-17 10:44:23,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:44:23,753 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 214 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:44:23,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 89 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-10-17 10:44:23,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2022-10-17 10:44:23,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 408. [2022-10-17 10:44:23,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 407 states have (on average 1.6142506142506143) internal successors, (657), 407 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:44:23,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 657 transitions. [2022-10-17 10:44:23,825 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 657 transitions. Word has length 59 [2022-10-17 10:44:23,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:44:23,826 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 657 transitions. [2022-10-17 10:44:23,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:44:23,827 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 657 transitions. [2022-10-17 10:44:23,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-10-17 10:44:23,833 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:44:23,833 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:44:23,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:44:23,834 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:44:23,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:44:23,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1894877470, now seen corresponding path program 1 times [2022-10-17 10:44:23,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:44:23,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113048190] [2022-10-17 10:44:23,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:44:23,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:44:23,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:24,074 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:44:24,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:44:24,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113048190] [2022-10-17 10:44:24,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113048190] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:44:24,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:44:24,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:44:24,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312665691] [2022-10-17 10:44:24,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:44:24,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:44:24,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:44:24,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:44:24,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:44:24,079 INFO L87 Difference]: Start difference. First operand 408 states and 657 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:44:24,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:44:24,986 INFO L93 Difference]: Finished difference Result 1193 states and 1931 transitions. [2022-10-17 10:44:24,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:44:24,987 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2022-10-17 10:44:24,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:44:24,992 INFO L225 Difference]: With dead ends: 1193 [2022-10-17 10:44:24,993 INFO L226 Difference]: Without dead ends: 787 [2022-10-17 10:44:24,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:44:24,997 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 143 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-10-17 10:44:24,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 153 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-10-17 10:44:25,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2022-10-17 10:44:25,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 783. [2022-10-17 10:44:25,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 783 states, 782 states have (on average 1.4398976982097187) internal successors, (1126), 782 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:44:25,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 1126 transitions. [2022-10-17 10:44:25,037 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 1126 transitions. Word has length 124 [2022-10-17 10:44:25,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:44:25,037 INFO L495 AbstractCegarLoop]: Abstraction has 783 states and 1126 transitions. [2022-10-17 10:44:25,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:44:25,038 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 1126 transitions. [2022-10-17 10:44:25,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-10-17 10:44:25,041 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:44:25,042 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:44:25,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:44:25,042 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:44:25,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:44:25,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1494454920, now seen corresponding path program 1 times [2022-10-17 10:44:25,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:44:25,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947784457] [2022-10-17 10:44:25,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:44:25,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:44:25,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:25,262 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:44:25,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:44:25,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947784457] [2022-10-17 10:44:25,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947784457] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:44:25,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:44:25,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:44:25,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612585720] [2022-10-17 10:44:25,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:44:25,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:44:25,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:44:25,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:44:25,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:44:25,266 INFO L87 Difference]: Start difference. First operand 783 states and 1126 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:44:26,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:44:26,231 INFO L93 Difference]: Finished difference Result 1948 states and 2803 transitions. [2022-10-17 10:44:26,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:44:26,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2022-10-17 10:44:26,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:44:26,239 INFO L225 Difference]: With dead ends: 1948 [2022-10-17 10:44:26,239 INFO L226 Difference]: Without dead ends: 1167 [2022-10-17 10:44:26,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:44:26,242 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 144 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-10-17 10:44:26,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 116 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-10-17 10:44:26,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2022-10-17 10:44:26,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 1154. [2022-10-17 10:44:26,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1154 states, 1153 states have (on average 1.3399826539462272) internal successors, (1545), 1153 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:44:26,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 1545 transitions. [2022-10-17 10:44:26,277 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 1545 transitions. Word has length 127 [2022-10-17 10:44:26,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:44:26,278 INFO L495 AbstractCegarLoop]: Abstraction has 1154 states and 1545 transitions. [2022-10-17 10:44:26,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:44:26,278 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 1545 transitions. [2022-10-17 10:44:26,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-10-17 10:44:26,282 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:44:26,282 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:44:26,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:44:26,282 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:44:26,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:44:26,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1334026776, now seen corresponding path program 1 times [2022-10-17 10:44:26,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:44:26,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458461180] [2022-10-17 10:44:26,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:44:26,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:44:26,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:26,692 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:44:26,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:44:26,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458461180] [2022-10-17 10:44:26,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458461180] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:44:26,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:44:26,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:44:26,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656567697] [2022-10-17 10:44:26,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:44:26,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:44:26,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:44:26,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:44:26,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:44:26,696 INFO L87 Difference]: Start difference. First operand 1154 states and 1545 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:44:27,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:44:27,552 INFO L93 Difference]: Finished difference Result 2676 states and 3531 transitions. [2022-10-17 10:44:27,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:44:27,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 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 128 [2022-10-17 10:44:27,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:44:27,561 INFO L225 Difference]: With dead ends: 2676 [2022-10-17 10:44:27,561 INFO L226 Difference]: Without dead ends: 1524 [2022-10-17 10:44:27,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:44:27,565 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 120 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-10-17 10:44:27,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 189 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-10-17 10:44:27,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2022-10-17 10:44:27,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 1523. [2022-10-17 10:44:27,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1522 states have (on average 1.269382391590013) internal successors, (1932), 1522 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:44:27,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 1932 transitions. [2022-10-17 10:44:27,608 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 1932 transitions. Word has length 128 [2022-10-17 10:44:27,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:44:27,609 INFO L495 AbstractCegarLoop]: Abstraction has 1523 states and 1932 transitions. [2022-10-17 10:44:27,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:44:27,609 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 1932 transitions. [2022-10-17 10:44:27,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-10-17 10:44:27,612 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:44:27,613 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:44:27,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:44:27,613 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:44:27,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:44:27,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1749899371, now seen corresponding path program 1 times [2022-10-17 10:44:27,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:44:27,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101389429] [2022-10-17 10:44:27,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:44:27,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:44:27,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:27,806 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:44:27,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:44:27,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101389429] [2022-10-17 10:44:27,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101389429] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:44:27,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:44:27,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:44:27,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324427651] [2022-10-17 10:44:27,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:44:27,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:44:27,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:44:27,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:44:27,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:44:27,810 INFO L87 Difference]: Start difference. First operand 1523 states and 1932 transitions. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 2 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:44:28,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:44:28,710 INFO L93 Difference]: Finished difference Result 3968 states and 5154 transitions. [2022-10-17 10:44:28,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:44:28,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 2 states have internal predecessors, (186), 0 states have call successors, (0), 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 186 [2022-10-17 10:44:28,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:44:28,726 INFO L225 Difference]: With dead ends: 3968 [2022-10-17 10:44:28,726 INFO L226 Difference]: Without dead ends: 2631 [2022-10-17 10:44:28,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:44:28,730 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 115 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-10-17 10:44:28,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 154 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-10-17 10:44:28,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2631 states. [2022-10-17 10:44:28,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2631 to 2631. [2022-10-17 10:44:28,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2631 states, 2630 states have (on average 1.2133079847908745) internal successors, (3191), 2630 states have internal predecessors, (3191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:44:28,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2631 states to 2631 states and 3191 transitions. [2022-10-17 10:44:28,801 INFO L78 Accepts]: Start accepts. Automaton has 2631 states and 3191 transitions. Word has length 186 [2022-10-17 10:44:28,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:44:28,802 INFO L495 AbstractCegarLoop]: Abstraction has 2631 states and 3191 transitions. [2022-10-17 10:44:28,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 2 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:44:28,808 INFO L276 IsEmpty]: Start isEmpty. Operand 2631 states and 3191 transitions. [2022-10-17 10:44:28,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-10-17 10:44:28,813 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:44:28,813 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:44:28,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:44:28,815 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:44:28,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:44:28,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1893767947, now seen corresponding path program 1 times [2022-10-17 10:44:28,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:44:28,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003230008] [2022-10-17 10:44:28,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:44:28,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:44:28,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:29,433 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:44:29,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:44:29,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003230008] [2022-10-17 10:44:29,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003230008] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:44:29,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:44:29,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:44:29,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88988964] [2022-10-17 10:44:29,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:44:29,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:44:29,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:44:29,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:44:29,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:44:29,438 INFO L87 Difference]: Start difference. First operand 2631 states and 3191 transitions. Second operand has 4 states, 4 states have (on average 50.5) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:44:31,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:44:31,068 INFO L93 Difference]: Finished difference Result 7118 states and 8850 transitions. [2022-10-17 10:44:31,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:44:31,068 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 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 202 [2022-10-17 10:44:31,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:44:31,093 INFO L225 Difference]: With dead ends: 7118 [2022-10-17 10:44:31,093 INFO L226 Difference]: Without dead ends: 4673 [2022-10-17 10:44:31,097 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 [2022-10-17 10:44:31,098 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 245 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 1393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-10-17 10:44:31,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 79 Invalid, 1393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-10-17 10:44:31,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4673 states. [2022-10-17 10:44:31,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4673 to 4295. [2022-10-17 10:44:31,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4295 states, 4294 states have (on average 1.231020027945971) internal successors, (5286), 4294 states have internal predecessors, (5286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:44:31,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4295 states to 4295 states and 5286 transitions. [2022-10-17 10:44:31,242 INFO L78 Accepts]: Start accepts. Automaton has 4295 states and 5286 transitions. Word has length 202 [2022-10-17 10:44:31,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:44:31,243 INFO L495 AbstractCegarLoop]: Abstraction has 4295 states and 5286 transitions. [2022-10-17 10:44:31,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:44:31,244 INFO L276 IsEmpty]: Start isEmpty. Operand 4295 states and 5286 transitions. [2022-10-17 10:44:31,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-10-17 10:44:31,249 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:44:31,249 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-10-17 10:44:31,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:44:31,250 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:44:31,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:44:31,250 INFO L85 PathProgramCache]: Analyzing trace with hash -878115989, now seen corresponding path program 1 times [2022-10-17 10:44:31,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:44:31,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33967616] [2022-10-17 10:44:31,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:44:31,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:44:31,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:31,571 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:44:31,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:44:31,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33967616] [2022-10-17 10:44:31,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33967616] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:44:31,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:44:31,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:44:31,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668124301] [2022-10-17 10:44:31,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:44:31,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:44:31,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:44:31,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:44:31,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:44:31,574 INFO L87 Difference]: Start difference. First operand 4295 states and 5286 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:44:32,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:44:32,467 INFO L93 Difference]: Finished difference Result 9519 states and 11889 transitions. [2022-10-17 10:44:32,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:44:32,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 239 [2022-10-17 10:44:32,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:44:32,500 INFO L225 Difference]: With dead ends: 9519 [2022-10-17 10:44:32,500 INFO L226 Difference]: Without dead ends: 5594 [2022-10-17 10:44:32,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:44:32,507 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 135 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-10-17 10:44:32,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 331 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-10-17 10:44:32,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5594 states. [2022-10-17 10:44:32,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5594 to 5399. [2022-10-17 10:44:32,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5399 states, 5398 states have (on average 1.2182289736939607) internal successors, (6576), 5398 states have internal predecessors, (6576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:44:32,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5399 states to 5399 states and 6576 transitions. [2022-10-17 10:44:32,637 INFO L78 Accepts]: Start accepts. Automaton has 5399 states and 6576 transitions. Word has length 239 [2022-10-17 10:44:32,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:44:32,638 INFO L495 AbstractCegarLoop]: Abstraction has 5399 states and 6576 transitions. [2022-10-17 10:44:32,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:44:32,638 INFO L276 IsEmpty]: Start isEmpty. Operand 5399 states and 6576 transitions. [2022-10-17 10:44:32,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-10-17 10:44:32,643 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:44:32,643 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:44:32,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 10:44:32,644 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:44:32,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:44:32,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1869280923, now seen corresponding path program 1 times [2022-10-17 10:44:32,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:44:32,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181923822] [2022-10-17 10:44:32,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:44:32,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:44:32,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:33,010 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-10-17 10:44:33,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:44:33,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181923822] [2022-10-17 10:44:33,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181923822] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:44:33,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:44:33,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:44:33,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337865947] [2022-10-17 10:44:33,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:44:33,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:44:33,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:44:33,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:44:33,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:44:33,014 INFO L87 Difference]: Start difference. First operand 5399 states and 6576 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:44:34,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:44:34,084 INFO L93 Difference]: Finished difference Result 14317 states and 17683 transitions. [2022-10-17 10:44:34,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:44:34,085 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 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 240 [2022-10-17 10:44:34,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:44:34,134 INFO L225 Difference]: With dead ends: 14317 [2022-10-17 10:44:34,135 INFO L226 Difference]: Without dead ends: 9288 [2022-10-17 10:44:34,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:44:34,142 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 167 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:44:34,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 331 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-10-17 10:44:34,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9288 states. [2022-10-17 10:44:34,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9288 to 8184. [2022-10-17 10:44:34,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8184 states, 8183 states have (on average 1.2134913845777833) internal successors, (9930), 8183 states have internal predecessors, (9930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:44:34,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8184 states to 8184 states and 9930 transitions. [2022-10-17 10:44:34,359 INFO L78 Accepts]: Start accepts. Automaton has 8184 states and 9930 transitions. Word has length 240 [2022-10-17 10:44:34,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:44:34,360 INFO L495 AbstractCegarLoop]: Abstraction has 8184 states and 9930 transitions. [2022-10-17 10:44:34,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:44:34,360 INFO L276 IsEmpty]: Start isEmpty. Operand 8184 states and 9930 transitions. [2022-10-17 10:44:34,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-10-17 10:44:34,366 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:44:34,366 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:44:34,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 10:44:34,368 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:44:34,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:44:34,369 INFO L85 PathProgramCache]: Analyzing trace with hash -2080681397, now seen corresponding path program 1 times [2022-10-17 10:44:34,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:44:34,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162946298] [2022-10-17 10:44:34,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:44:34,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:44:34,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:34,890 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:44:34,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:44:34,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162946298] [2022-10-17 10:44:34,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162946298] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:44:34,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:44:34,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:44:34,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891215196] [2022-10-17 10:44:34,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:44:34,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:44:34,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:44:34,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:44:34,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:44:34,894 INFO L87 Difference]: Start difference. First operand 8184 states and 9930 transitions. Second operand has 4 states, 4 states have (on average 65.25) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:44:36,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:44:36,558 INFO L93 Difference]: Finished difference Result 17850 states and 21799 transitions. [2022-10-17 10:44:36,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:44:36,558 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 65.25) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 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 261 [2022-10-17 10:44:36,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:44:36,592 INFO L225 Difference]: With dead ends: 17850 [2022-10-17 10:44:36,592 INFO L226 Difference]: Without dead ends: 10036 [2022-10-17 10:44:36,600 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 [2022-10-17 10:44:36,601 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 245 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1064 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 1362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 1064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-10-17 10:44:36,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 140 Invalid, 1362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 1064 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-10-17 10:44:36,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10036 states. [2022-10-17 10:44:36,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10036 to 9658. [2022-10-17 10:44:36,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9658 states, 9657 states have (on average 1.2026509267888579) internal successors, (11614), 9657 states have internal predecessors, (11614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:44:36,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9658 states to 9658 states and 11614 transitions. [2022-10-17 10:44:36,792 INFO L78 Accepts]: Start accepts. Automaton has 9658 states and 11614 transitions. Word has length 261 [2022-10-17 10:44:36,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:44:36,793 INFO L495 AbstractCegarLoop]: Abstraction has 9658 states and 11614 transitions. [2022-10-17 10:44:36,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.25) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:44:36,793 INFO L276 IsEmpty]: Start isEmpty. Operand 9658 states and 11614 transitions. [2022-10-17 10:44:36,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2022-10-17 10:44:36,804 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:44:36,804 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-10-17 10:44:36,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-17 10:44:36,805 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:44:36,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:44:36,806 INFO L85 PathProgramCache]: Analyzing trace with hash -2113401050, now seen corresponding path program 1 times [2022-10-17 10:44:36,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:44:36,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357017493] [2022-10-17 10:44:36,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:44:36,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:44:36,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:37,820 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 128 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:44:37,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:44:37,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357017493] [2022-10-17 10:44:37,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357017493] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:44:37,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367405514] [2022-10-17 10:44:37,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:44:37,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:44:37,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22110852-d9fc-4c27-a4ca-f34dfc5fdff5/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:44:37,829 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22110852-d9fc-4c27-a4ca-f34dfc5fdff5/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:44:37,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22110852-d9fc-4c27-a4ca-f34dfc5fdff5/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 10:44:38,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:38,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-17 10:44:38,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:44:38,727 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 128 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:44:38,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:44:38,918 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-10-17 10:44:38,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367405514] provided 1 perfect and 1 imperfect interpolant sequences [2022-10-17 10:44:38,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:44:38,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 5 [2022-10-17 10:44:38,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094074805] [2022-10-17 10:44:38,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:44:38,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:44:38,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:44:38,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:44:38,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:44:38,921 INFO L87 Difference]: Start difference. First operand 9658 states and 11614 transitions. Second operand has 3 states, 3 states have (on average 80.66666666666667) 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) [2022-10-17 10:44:40,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:44:40,044 INFO L93 Difference]: Finished difference Result 18385 states and 22011 transitions. [2022-10-17 10:44:40,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:44:40,045 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.66666666666667) 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 313 [2022-10-17 10:44:40,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:44:40,065 INFO L225 Difference]: With dead ends: 18385 [2022-10-17 10:44:40,066 INFO L226 Difference]: Without dead ends: 9097 [2022-10-17 10:44:40,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 628 GetRequests, 624 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:44:40,077 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 161 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:44:40,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 308 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-10-17 10:44:40,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9097 states. [2022-10-17 10:44:40,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9097 to 8358. [2022-10-17 10:44:40,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8358 states, 8357 states have (on average 1.1808065095129832) internal successors, (9868), 8357 states have internal predecessors, (9868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:44:40,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8358 states to 8358 states and 9868 transitions. [2022-10-17 10:44:40,237 INFO L78 Accepts]: Start accepts. Automaton has 8358 states and 9868 transitions. Word has length 313 [2022-10-17 10:44:40,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:44:40,238 INFO L495 AbstractCegarLoop]: Abstraction has 8358 states and 9868 transitions. [2022-10-17 10:44:40,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) 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) [2022-10-17 10:44:40,238 INFO L276 IsEmpty]: Start isEmpty. Operand 8358 states and 9868 transitions. [2022-10-17 10:44:40,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2022-10-17 10:44:40,256 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:44:40,257 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:44:40,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22110852-d9fc-4c27-a4ca-f34dfc5fdff5/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:44:40,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22110852-d9fc-4c27-a4ca-f34dfc5fdff5/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-10-17 10:44:40,473 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:44:40,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:44:40,474 INFO L85 PathProgramCache]: Analyzing trace with hash 658760884, now seen corresponding path program 1 times [2022-10-17 10:44:40,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:44:40,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209774258] [2022-10-17 10:44:40,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:44:40,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:44:40,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:40,926 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 353 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-10-17 10:44:40,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:44:40,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209774258] [2022-10-17 10:44:40,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209774258] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:44:40,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:44:40,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:44:40,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084861082] [2022-10-17 10:44:40,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:44:40,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:44:40,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:44:40,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:44:40,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:44:40,929 INFO L87 Difference]: Start difference. First operand 8358 states and 9868 transitions. Second operand has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:44:41,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:44:41,967 INFO L93 Difference]: Finished difference Result 17639 states and 20898 transitions. [2022-10-17 10:44:41,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:44:41,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 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 381 [2022-10-17 10:44:41,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:44:41,987 INFO L225 Difference]: With dead ends: 17639 [2022-10-17 10:44:41,987 INFO L226 Difference]: Without dead ends: 9467 [2022-10-17 10:44:41,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:44:41,997 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 107 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-10-17 10:44:41,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 361 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-10-17 10:44:42,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9467 states. [2022-10-17 10:44:42,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9467 to 9278. [2022-10-17 10:44:42,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9278 states, 9277 states have (on average 1.1745176242319715) internal successors, (10896), 9277 states have internal predecessors, (10896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:44:42,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9278 states to 9278 states and 10896 transitions. [2022-10-17 10:44:42,217 INFO L78 Accepts]: Start accepts. Automaton has 9278 states and 10896 transitions. Word has length 381 [2022-10-17 10:44:42,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:44:42,218 INFO L495 AbstractCegarLoop]: Abstraction has 9278 states and 10896 transitions. [2022-10-17 10:44:42,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:44:42,218 INFO L276 IsEmpty]: Start isEmpty. Operand 9278 states and 10896 transitions. [2022-10-17 10:44:42,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2022-10-17 10:44:42,230 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:44:42,230 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:44:42,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-17 10:44:42,231 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:44:42,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:44:42,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1793054198, now seen corresponding path program 1 times [2022-10-17 10:44:42,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:44:42,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572848472] [2022-10-17 10:44:42,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:44:42,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:44:42,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:42,600 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2022-10-17 10:44:42,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:44:42,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572848472] [2022-10-17 10:44:42,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572848472] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:44:42,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:44:42,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:44:42,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566998762] [2022-10-17 10:44:42,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:44:42,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:44:42,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:44:42,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:44:42,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:44:42,603 INFO L87 Difference]: Start difference. First operand 9278 states and 10896 transitions. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:44:43,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:44:43,579 INFO L93 Difference]: Finished difference Result 19840 states and 23280 transitions. [2022-10-17 10:44:43,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:44:43,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 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 386 [2022-10-17 10:44:43,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:44:43,643 INFO L225 Difference]: With dead ends: 19840 [2022-10-17 10:44:43,643 INFO L226 Difference]: Without dead ends: 10934 [2022-10-17 10:44:43,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:44:43,650 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 162 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-10-17 10:44:43,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 317 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-10-17 10:44:43,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10934 states. [2022-10-17 10:44:43,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10934 to 7785. [2022-10-17 10:44:43,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7785 states, 7784 states have (on average 1.1379753340184995) internal successors, (8858), 7784 states have internal predecessors, (8858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:44:43,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7785 states to 7785 states and 8858 transitions. [2022-10-17 10:44:43,787 INFO L78 Accepts]: Start accepts. Automaton has 7785 states and 8858 transitions. Word has length 386 [2022-10-17 10:44:43,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:44:43,788 INFO L495 AbstractCegarLoop]: Abstraction has 7785 states and 8858 transitions. [2022-10-17 10:44:43,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:44:43,789 INFO L276 IsEmpty]: Start isEmpty. Operand 7785 states and 8858 transitions. [2022-10-17 10:44:43,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2022-10-17 10:44:43,802 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:44:43,802 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:44:43,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-10-17 10:44:43,803 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:44:43,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:44:43,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1378379559, now seen corresponding path program 1 times [2022-10-17 10:44:43,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:44:43,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072857754] [2022-10-17 10:44:43,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:44:43,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:44:43,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:44,429 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 387 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-10-17 10:44:44,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:44:44,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072857754] [2022-10-17 10:44:44,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072857754] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:44:44,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:44:44,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:44:44,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472549095] [2022-10-17 10:44:44,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:44:44,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:44:44,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:44:44,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:44:44,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:44:44,468 INFO L87 Difference]: Start difference. First operand 7785 states and 8858 transitions. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 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) [2022-10-17 10:44:45,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:44:45,441 INFO L93 Difference]: Finished difference Result 17417 states and 19899 transitions. [2022-10-17 10:44:45,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:44:45,441 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 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 401 [2022-10-17 10:44:45,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:44:45,464 INFO L225 Difference]: With dead ends: 17417 [2022-10-17 10:44:45,464 INFO L226 Difference]: Without dead ends: 10004 [2022-10-17 10:44:45,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:44:45,478 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 142 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-10-17 10:44:45,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 132 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-10-17 10:44:45,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10004 states.