./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem18_label23.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_e610b715-f95d-4ba1-8336-92c052081515/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e610b715-f95d-4ba1-8336-92c052081515/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_e610b715-f95d-4ba1-8336-92c052081515/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e610b715-f95d-4ba1-8336-92c052081515/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem18_label23.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e610b715-f95d-4ba1-8336-92c052081515/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_e610b715-f95d-4ba1-8336-92c052081515/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 9c3f430f1d0c98e808f28c171a470da1b7d8f35cdbdf3a5d89880d12cad963bd --- 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 10:33:44,815 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:33:44,818 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:33:44,863 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:33:44,864 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:33:44,871 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:33:44,874 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:33:44,879 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:33:44,881 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:33:44,888 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:33:44,890 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:33:44,892 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:33:44,893 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:33:44,895 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:33:44,898 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:33:44,900 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:33:44,902 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:33:44,903 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:33:44,905 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:33:44,912 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:33:44,919 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:33:44,920 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:33:44,924 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:33:44,925 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:33:44,932 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:33:44,932 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:33:44,933 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:33:44,935 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:33:44,936 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:33:44,937 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:33:44,937 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:33:44,938 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:33:44,940 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:33:44,941 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:33:44,943 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:33:44,943 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:33:44,943 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:33:44,944 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:33:44,944 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:33:44,945 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:33:44,946 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:33:44,946 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e610b715-f95d-4ba1-8336-92c052081515/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:33:44,983 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:33:44,983 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:33:44,984 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:33:44,984 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:33:44,985 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:33:44,985 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:33:44,986 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:33:44,986 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:33:44,986 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:33:44,986 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:33:44,987 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:33:44,987 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:33:44,987 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:33:44,987 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:33:44,988 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:33:44,988 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:33:44,988 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:33:44,988 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:33:44,989 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:33:44,989 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:33:44,989 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:33:44,989 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:33:44,990 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:33:44,990 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:33:44,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:33:44,990 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:33:44,991 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:33:44,991 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:33:44,991 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:33:44,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:33:44,992 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:33:44,992 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:33:44,992 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:33:44,992 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_e610b715-f95d-4ba1-8336-92c052081515/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e610b715-f95d-4ba1-8336-92c052081515/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c3f430f1d0c98e808f28c171a470da1b7d8f35cdbdf3a5d89880d12cad963bd [2022-10-17 10:33:45,249 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:33:45,276 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:33:45,279 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:33:45,280 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:33:45,281 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:33:45,282 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e610b715-f95d-4ba1-8336-92c052081515/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/eca-rers2012/Problem18_label23.c [2022-10-17 10:33:45,361 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e610b715-f95d-4ba1-8336-92c052081515/bin/uautomizer-J5u9QxTXDZ/data/3a955a86f/51810549ffc9494abbd3c4578785cf22/FLAG16d148a16 [2022-10-17 10:33:46,101 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:33:46,101 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e610b715-f95d-4ba1-8336-92c052081515/sv-benchmarks/c/eca-rers2012/Problem18_label23.c [2022-10-17 10:33:46,127 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e610b715-f95d-4ba1-8336-92c052081515/bin/uautomizer-J5u9QxTXDZ/data/3a955a86f/51810549ffc9494abbd3c4578785cf22/FLAG16d148a16 [2022-10-17 10:33:46,200 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e610b715-f95d-4ba1-8336-92c052081515/bin/uautomizer-J5u9QxTXDZ/data/3a955a86f/51810549ffc9494abbd3c4578785cf22 [2022-10-17 10:33:46,203 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:33:46,204 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:33:46,205 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:33:46,205 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:33:46,209 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:33:46,210 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:33:46" (1/1) ... [2022-10-17 10:33:46,211 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dfc7d7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:33:46, skipping insertion in model container [2022-10-17 10:33:46,211 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:33:46" (1/1) ... [2022-10-17 10:33:46,219 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:33:46,356 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:33:46,613 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_e610b715-f95d-4ba1-8336-92c052081515/sv-benchmarks/c/eca-rers2012/Problem18_label23.c[5791,5804] [2022-10-17 10:33:47,523 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:33:47,533 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:33:47,570 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_e610b715-f95d-4ba1-8336-92c052081515/sv-benchmarks/c/eca-rers2012/Problem18_label23.c[5791,5804] [2022-10-17 10:33:48,041 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:33:48,064 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:33:48,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:33:48 WrapperNode [2022-10-17 10:33:48,065 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:33:48,066 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:33:48,066 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:33:48,066 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:33:48,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:33:48" (1/1) ... [2022-10-17 10:33:48,131 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:33:48" (1/1) ... [2022-10-17 10:33:48,376 INFO L138 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 4132 [2022-10-17 10:33:48,377 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:33:48,378 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:33:48,378 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:33:48,378 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:33:48,396 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:33:48" (1/1) ... [2022-10-17 10:33:48,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:33:48" (1/1) ... [2022-10-17 10:33:48,426 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:33:48" (1/1) ... [2022-10-17 10:33:48,426 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:33:48" (1/1) ... [2022-10-17 10:33:48,523 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:33:48" (1/1) ... [2022-10-17 10:33:48,557 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:33:48" (1/1) ... [2022-10-17 10:33:48,595 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:33:48" (1/1) ... [2022-10-17 10:33:48,608 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:33:48" (1/1) ... [2022-10-17 10:33:48,718 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:33:48,720 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:33:48,721 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:33:48,721 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:33:48,722 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:33:48" (1/1) ... [2022-10-17 10:33:48,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:33:48,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e610b715-f95d-4ba1-8336-92c052081515/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:33:48,763 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e610b715-f95d-4ba1-8336-92c052081515/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:33:48,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e610b715-f95d-4ba1-8336-92c052081515/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:33:48,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:33:48,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:33:48,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:33:48,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:33:48,894 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:33:48,896 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:33:52,735 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:33:52,751 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:33:52,751 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 10:33:52,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:33:52 BoogieIcfgContainer [2022-10-17 10:33:52,754 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:33:52,757 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:33:52,757 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:33:52,760 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:33:52,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:33:46" (1/3) ... [2022-10-17 10:33:52,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11599342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:33:52, skipping insertion in model container [2022-10-17 10:33:52,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:33:48" (2/3) ... [2022-10-17 10:33:52,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11599342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:33:52, skipping insertion in model container [2022-10-17 10:33:52,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:33:52" (3/3) ... [2022-10-17 10:33:52,762 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label23.c [2022-10-17 10:33:52,780 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:33:52,780 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:33:52,863 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:33:52,879 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;@59077067, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:33:52,880 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:33:52,892 INFO L276 IsEmpty]: Start isEmpty. Operand has 757 states, 755 states have (on average 1.9125827814569536) internal successors, (1444), 756 states have internal predecessors, (1444), 0 states have call successors, (0), 0 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 10:33:52,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-10-17 10:33:52,904 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:33:52,905 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] [2022-10-17 10:33:52,906 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:33:52,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:33:52,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1246856209, now seen corresponding path program 1 times [2022-10-17 10:33:52,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:33:52,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011414599] [2022-10-17 10:33:52,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:33:52,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:33:53,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:33:53,419 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 10:33:53,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:33:53,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011414599] [2022-10-17 10:33:53,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011414599] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:33:53,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:33:53,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:33:53,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859538819] [2022-10-17 10:33:53,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:33:53,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:33:53,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:33:53,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:33:53,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:33:53,458 INFO L87 Difference]: Start difference. First operand has 757 states, 755 states have (on average 1.9125827814569536) internal successors, (1444), 756 states have internal predecessors, (1444), 0 states have call successors, (0), 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 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 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 10:33:59,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:33:59,100 INFO L93 Difference]: Finished difference Result 2910 states and 5661 transitions. [2022-10-17 10:33:59,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:33:59,103 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2022-10-17 10:33:59,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:33:59,143 INFO L225 Difference]: With dead ends: 2910 [2022-10-17 10:33:59,143 INFO L226 Difference]: Without dead ends: 2080 [2022-10-17 10:33:59,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:33:59,162 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 2123 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 3390 mSolverCounterSat, 1774 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2123 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 5164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1774 IncrementalHoareTripleChecker+Valid, 3390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:33:59,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2123 Valid, 168 Invalid, 5164 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1774 Valid, 3390 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-10-17 10:33:59,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2080 states. [2022-10-17 10:33:59,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2080 to 2074. [2022-10-17 10:33:59,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2074 states, 2073 states have (on average 1.5561987457790643) internal successors, (3226), 2073 states have internal predecessors, (3226), 0 states have call successors, (0), 0 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 10:33:59,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2074 states to 2074 states and 3226 transitions. [2022-10-17 10:33:59,326 INFO L78 Accepts]: Start accepts. Automaton has 2074 states and 3226 transitions. Word has length 55 [2022-10-17 10:33:59,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:33:59,327 INFO L495 AbstractCegarLoop]: Abstraction has 2074 states and 3226 transitions. [2022-10-17 10:33:59,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 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 10:33:59,328 INFO L276 IsEmpty]: Start isEmpty. Operand 2074 states and 3226 transitions. [2022-10-17 10:33:59,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-10-17 10:33:59,346 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:33:59,346 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, 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] [2022-10-17 10:33:59,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:33:59,347 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:33:59,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:33:59,347 INFO L85 PathProgramCache]: Analyzing trace with hash -840029424, now seen corresponding path program 1 times [2022-10-17 10:33:59,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:33:59,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919628415] [2022-10-17 10:33:59,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:33:59,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:33:59,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:34:00,277 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-10-17 10:34:00,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:34:00,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919628415] [2022-10-17 10:34:00,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919628415] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:34:00,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:34:00,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:34:00,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633627047] [2022-10-17 10:34:00,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:34:00,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:34:00,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:34:00,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:34:00,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:34:00,285 INFO L87 Difference]: Start difference. First operand 2074 states and 3226 transitions. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 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 10:34:05,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:34:05,090 INFO L93 Difference]: Finished difference Result 6908 states and 10880 transitions. [2022-10-17 10:34:05,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:34:05,091 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 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 215 [2022-10-17 10:34:05,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:34:05,117 INFO L225 Difference]: With dead ends: 6908 [2022-10-17 10:34:05,117 INFO L226 Difference]: Without dead ends: 4836 [2022-10-17 10:34:05,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:34:05,127 INFO L413 NwaCegarLoop]: 605 mSDtfsCounter, 1924 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 4332 mSolverCounterSat, 628 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1924 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 4960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 628 IncrementalHoareTripleChecker+Valid, 4332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-10-17 10:34:05,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1924 Valid, 622 Invalid, 4960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [628 Valid, 4332 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-10-17 10:34:05,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4836 states. [2022-10-17 10:34:05,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4836 to 4144. [2022-10-17 10:34:05,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4144 states, 4143 states have (on average 1.3408158339367608) internal successors, (5555), 4143 states have internal predecessors, (5555), 0 states have call successors, (0), 0 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 10:34:05,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4144 states to 4144 states and 5555 transitions. [2022-10-17 10:34:05,254 INFO L78 Accepts]: Start accepts. Automaton has 4144 states and 5555 transitions. Word has length 215 [2022-10-17 10:34:05,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:34:05,258 INFO L495 AbstractCegarLoop]: Abstraction has 4144 states and 5555 transitions. [2022-10-17 10:34:05,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 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 10:34:05,259 INFO L276 IsEmpty]: Start isEmpty. Operand 4144 states and 5555 transitions. [2022-10-17 10:34:05,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2022-10-17 10:34:05,265 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:34:05,266 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:34:05,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:34:05,269 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:34:05,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:34:05,279 INFO L85 PathProgramCache]: Analyzing trace with hash -2021877841, now seen corresponding path program 1 times [2022-10-17 10:34:05,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:34:05,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24010593] [2022-10-17 10:34:05,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:34:05,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:34:05,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:34:05,863 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 10:34:05,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:34:05,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24010593] [2022-10-17 10:34:05,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24010593] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:34:05,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:34:05,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:34:05,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4573013] [2022-10-17 10:34:05,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:34:05,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:34:05,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:34:05,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:34:05,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:34:05,868 INFO L87 Difference]: Start difference. First operand 4144 states and 5555 transitions. Second operand has 4 states, 4 states have (on average 75.75) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 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 10:34:09,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:34:09,086 INFO L93 Difference]: Finished difference Result 10409 states and 13873 transitions. [2022-10-17 10:34:09,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:34:09,090 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 75.75) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 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 304 [2022-10-17 10:34:09,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:34:09,124 INFO L225 Difference]: With dead ends: 10409 [2022-10-17 10:34:09,125 INFO L226 Difference]: Without dead ends: 6214 [2022-10-17 10:34:09,132 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 10:34:09,137 INFO L413 NwaCegarLoop]: 624 mSDtfsCounter, 531 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 2590 mSolverCounterSat, 867 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 3457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 867 IncrementalHoareTripleChecker+Valid, 2590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:34:09,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [531 Valid, 636 Invalid, 3457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [867 Valid, 2590 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-10-17 10:34:09,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6214 states. [2022-10-17 10:34:09,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6214 to 5524. [2022-10-17 10:34:09,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5524 states, 5523 states have (on average 1.196270143038204) internal successors, (6607), 5523 states have internal predecessors, (6607), 0 states have call successors, (0), 0 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 10:34:09,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5524 states to 5524 states and 6607 transitions. [2022-10-17 10:34:09,270 INFO L78 Accepts]: Start accepts. Automaton has 5524 states and 6607 transitions. Word has length 304 [2022-10-17 10:34:09,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:34:09,272 INFO L495 AbstractCegarLoop]: Abstraction has 5524 states and 6607 transitions. [2022-10-17 10:34:09,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.75) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 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 10:34:09,273 INFO L276 IsEmpty]: Start isEmpty. Operand 5524 states and 6607 transitions. [2022-10-17 10:34:09,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 937 [2022-10-17 10:34:09,304 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:34:09,305 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:34:09,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:34:09,306 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:34:09,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:34:09,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1914538337, now seen corresponding path program 1 times [2022-10-17 10:34:09,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:34:09,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394943627] [2022-10-17 10:34:09,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:34:09,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:34:09,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:34:10,665 INFO L134 CoverageAnalysis]: Checked inductivity of 589 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2022-10-17 10:34:10,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:34:10,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394943627] [2022-10-17 10:34:10,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394943627] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:34:10,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:34:10,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:34:10,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722750258] [2022-10-17 10:34:10,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:34:10,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:34:10,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:34:10,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:34:10,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:34:10,670 INFO L87 Difference]: Start difference. First operand 5524 states and 6607 transitions. Second operand has 3 states, 3 states have (on average 191.0) internal successors, (573), 2 states have internal predecessors, (573), 0 states have call successors, (0), 0 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 10:34:12,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:34:12,900 INFO L93 Difference]: Finished difference Result 12426 states and 14973 transitions. [2022-10-17 10:34:12,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:34:12,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 191.0) internal successors, (573), 2 states have internal predecessors, (573), 0 states have call successors, (0), 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 936 [2022-10-17 10:34:12,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:34:12,935 INFO L225 Difference]: With dead ends: 12426 [2022-10-17 10:34:12,936 INFO L226 Difference]: Without dead ends: 6904 [2022-10-17 10:34:12,943 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 10:34:12,944 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 249 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1791 mSolverCounterSat, 687 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 2478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 687 IncrementalHoareTripleChecker+Valid, 1791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:34:12,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 77 Invalid, 2478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [687 Valid, 1791 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-10-17 10:34:12,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6904 states. [2022-10-17 10:34:13,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6904 to 6904. [2022-10-17 10:34:13,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6904 states, 6903 states have (on average 1.1929595827900912) internal successors, (8235), 6903 states have internal predecessors, (8235), 0 states have call successors, (0), 0 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 10:34:13,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6904 states to 6904 states and 8235 transitions. [2022-10-17 10:34:13,105 INFO L78 Accepts]: Start accepts. Automaton has 6904 states and 8235 transitions. Word has length 936 [2022-10-17 10:34:13,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:34:13,107 INFO L495 AbstractCegarLoop]: Abstraction has 6904 states and 8235 transitions. [2022-10-17 10:34:13,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.0) internal successors, (573), 2 states have internal predecessors, (573), 0 states have call successors, (0), 0 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 10:34:13,108 INFO L276 IsEmpty]: Start isEmpty. Operand 6904 states and 8235 transitions. [2022-10-17 10:34:13,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 960 [2022-10-17 10:34:13,209 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:34:13,210 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:34:13,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:34:13,210 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:34:13,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:34:13,211 INFO L85 PathProgramCache]: Analyzing trace with hash -450910357, now seen corresponding path program 1 times [2022-10-17 10:34:13,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:34:13,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058192027] [2022-10-17 10:34:13,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:34:13,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:34:13,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:34:14,327 INFO L134 CoverageAnalysis]: Checked inductivity of 635 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 477 trivial. 0 not checked. [2022-10-17 10:34:14,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:34:14,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058192027] [2022-10-17 10:34:14,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058192027] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:34:14,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:34:14,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:34:14,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553248204] [2022-10-17 10:34:14,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:34:14,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:34:14,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:34:14,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:34:14,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:34:14,332 INFO L87 Difference]: Start difference. First operand 6904 states and 8235 transitions. Second operand has 3 states, 3 states have (on average 191.0) internal successors, (573), 2 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)