./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem16_label45.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_5a422cb8-472f-470a-808e-bd8641434b96/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a422cb8-472f-470a-808e-bd8641434b96/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_5a422cb8-472f-470a-808e-bd8641434b96/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a422cb8-472f-470a-808e-bd8641434b96/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem16_label45.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a422cb8-472f-470a-808e-bd8641434b96/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_5a422cb8-472f-470a-808e-bd8641434b96/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 afe335c27ad1064f04c887aeb6cd5f788e4385baa51346b0245aab8cf0c02312 --- 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 10:39:06,894 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:39:06,897 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:39:06,939 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:39:06,939 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:39:06,941 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:39:06,943 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:39:06,946 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:39:06,948 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:39:06,950 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:39:06,951 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:39:06,953 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:39:06,954 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:39:06,955 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:39:06,957 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:39:06,959 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:39:06,960 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:39:06,962 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:39:06,965 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:39:06,968 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:39:06,977 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:39:06,981 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:39:06,983 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:39:06,984 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:39:06,989 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:39:06,990 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:39:06,990 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:39:06,992 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:39:06,992 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:39:06,994 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:39:06,994 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:39:07,004 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:39:07,007 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:39:07,009 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:39:07,011 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:39:07,012 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:39:07,012 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:39:07,013 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:39:07,013 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:39:07,014 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:39:07,015 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:39:07,016 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a422cb8-472f-470a-808e-bd8641434b96/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:39:07,075 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:39:07,075 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:39:07,075 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:39:07,076 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:39:07,076 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:39:07,077 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:39:07,077 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:39:07,078 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:39:07,078 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:39:07,078 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:39:07,078 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:39:07,078 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:39:07,079 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:39:07,079 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:39:07,079 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:39:07,079 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:39:07,081 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:39:07,082 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:39:07,082 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:39:07,082 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:39:07,082 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:39:07,082 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:39:07,083 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:39:07,083 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:39:07,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:39:07,084 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:39:07,085 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:39:07,086 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:39:07,087 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:39:07,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:39:07,087 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:39:07,087 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:39:07,088 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:39:07,088 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_5a422cb8-472f-470a-808e-bd8641434b96/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a422cb8-472f-470a-808e-bd8641434b96/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> afe335c27ad1064f04c887aeb6cd5f788e4385baa51346b0245aab8cf0c02312 [2022-10-17 10:39:07,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:39:07,434 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:39:07,437 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:39:07,460 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:39:07,461 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:39:07,462 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a422cb8-472f-470a-808e-bd8641434b96/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/eca-rers2012/Problem16_label45.c [2022-10-17 10:39:07,552 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a422cb8-472f-470a-808e-bd8641434b96/bin/uautomizer-J5u9QxTXDZ/data/0a5173a2f/e3c7d9f30f8c49b1b69cf2995a54cdac/FLAG89c9dec94 [2022-10-17 10:39:08,449 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:39:08,450 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a422cb8-472f-470a-808e-bd8641434b96/sv-benchmarks/c/eca-rers2012/Problem16_label45.c [2022-10-17 10:39:08,473 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a422cb8-472f-470a-808e-bd8641434b96/bin/uautomizer-J5u9QxTXDZ/data/0a5173a2f/e3c7d9f30f8c49b1b69cf2995a54cdac/FLAG89c9dec94 [2022-10-17 10:39:08,559 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a422cb8-472f-470a-808e-bd8641434b96/bin/uautomizer-J5u9QxTXDZ/data/0a5173a2f/e3c7d9f30f8c49b1b69cf2995a54cdac [2022-10-17 10:39:08,563 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:39:08,567 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:39:08,569 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:39:08,570 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:39:08,575 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:39:08,576 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:39:08" (1/1) ... [2022-10-17 10:39:08,578 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6123e7cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:39:08, skipping insertion in model container [2022-10-17 10:39:08,579 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:39:08" (1/1) ... [2022-10-17 10:39:08,587 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:39:08,689 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:39:09,037 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_5a422cb8-472f-470a-808e-bd8641434b96/sv-benchmarks/c/eca-rers2012/Problem16_label45.c[5621,5634] [2022-10-17 10:39:09,600 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:39:09,610 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:39:09,635 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_5a422cb8-472f-470a-808e-bd8641434b96/sv-benchmarks/c/eca-rers2012/Problem16_label45.c[5621,5634] [2022-10-17 10:39:09,886 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:39:09,906 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:39:09,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:39:09 WrapperNode [2022-10-17 10:39:09,907 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:39:09,909 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:39:09,909 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:39:09,909 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:39:09,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:39:09" (1/1) ... [2022-10-17 10:39:09,973 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:39:09" (1/1) ... [2022-10-17 10:39:10,135 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1768 [2022-10-17 10:39:10,136 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:39:10,137 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:39:10,137 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:39:10,137 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:39:10,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:39:09" (1/1) ... [2022-10-17 10:39:10,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:39:09" (1/1) ... [2022-10-17 10:39:10,163 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:39:09" (1/1) ... [2022-10-17 10:39:10,164 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:39:09" (1/1) ... [2022-10-17 10:39:10,334 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:39:09" (1/1) ... [2022-10-17 10:39:10,367 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:39:09" (1/1) ... [2022-10-17 10:39:10,400 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:39:09" (1/1) ... [2022-10-17 10:39:10,412 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:39:09" (1/1) ... [2022-10-17 10:39:10,474 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:39:10,476 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:39:10,477 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:39:10,477 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:39:10,478 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:39:09" (1/1) ... [2022-10-17 10:39:10,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:39:10,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a422cb8-472f-470a-808e-bd8641434b96/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:39:10,521 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a422cb8-472f-470a-808e-bd8641434b96/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:39:10,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a422cb8-472f-470a-808e-bd8641434b96/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:39:10,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:39:10,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:39:10,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:39:10,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:39:10,712 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:39:10,715 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:39:13,637 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:39:13,657 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:39:13,657 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 10:39:13,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:39:13 BoogieIcfgContainer [2022-10-17 10:39:13,660 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:39:13,662 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:39:13,663 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:39:13,666 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:39:13,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:39:08" (1/3) ... [2022-10-17 10:39:13,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bfb646f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:39:13, skipping insertion in model container [2022-10-17 10:39:13,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:39:09" (2/3) ... [2022-10-17 10:39:13,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bfb646f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:39:13, skipping insertion in model container [2022-10-17 10:39:13,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:39:13" (3/3) ... [2022-10-17 10:39:13,669 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label45.c [2022-10-17 10:39:13,688 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:39:13,688 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:39:13,774 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:39:13,785 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;@2ebaa8ac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:39:13,785 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:39:13,798 INFO L276 IsEmpty]: Start isEmpty. Operand has 396 states, 394 states have (on average 1.8350253807106598) internal successors, (723), 395 states have internal predecessors, (723), 0 states have call successors, (0), 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 10:39:13,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-10-17 10:39:13,812 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:39:13,813 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] [2022-10-17 10:39:13,814 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:39:13,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:39:13,821 INFO L85 PathProgramCache]: Analyzing trace with hash -92557335, now seen corresponding path program 1 times [2022-10-17 10:39:13,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:39:13,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994406582] [2022-10-17 10:39:13,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:39:13,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:39:13,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:39:14,306 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 10:39:14,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:39:14,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994406582] [2022-10-17 10:39:14,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994406582] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:39:14,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:39:14,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:39:14,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758128922] [2022-10-17 10:39:14,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:39:14,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:39:14,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:39:14,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:39:14,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:39:14,367 INFO L87 Difference]: Start difference. First operand has 396 states, 394 states have (on average 1.8350253807106598) internal successors, (723), 395 states have internal predecessors, (723), 0 states have call successors, (0), 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 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 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 10:39:16,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:39:16,616 INFO L93 Difference]: Finished difference Result 1122 states and 2103 transitions. [2022-10-17 10:39:16,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:39:16,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2022-10-17 10:39:16,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:39:16,640 INFO L225 Difference]: With dead ends: 1122 [2022-10-17 10:39:16,640 INFO L226 Difference]: Without dead ends: 662 [2022-10-17 10:39:16,647 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 10:39:16,651 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 334 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 864 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 1314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:39:16,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 254 Invalid, 1314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 864 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-10-17 10:39:16,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2022-10-17 10:39:16,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 662. [2022-10-17 10:39:16,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 661 states have (on average 1.518910741301059) internal successors, (1004), 661 states have internal predecessors, (1004), 0 states have call successors, (0), 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 10:39:16,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 1004 transitions. [2022-10-17 10:39:16,764 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 1004 transitions. Word has length 53 [2022-10-17 10:39:16,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:39:16,765 INFO L495 AbstractCegarLoop]: Abstraction has 662 states and 1004 transitions. [2022-10-17 10:39:16,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 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 10:39:16,766 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 1004 transitions. [2022-10-17 10:39:16,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-10-17 10:39:16,779 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:39:16,779 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, 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 10:39:16,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:39:16,780 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:39:16,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:39:16,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1686833650, now seen corresponding path program 1 times [2022-10-17 10:39:16,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:39:16,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271331320] [2022-10-17 10:39:16,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:39:16,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:39:16,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:39:17,270 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:39:17,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:39:17,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271331320] [2022-10-17 10:39:17,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271331320] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:39:17,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:39:17,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:39:17,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84077720] [2022-10-17 10:39:17,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:39:17,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:39:17,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:39:17,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:39:17,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:39:17,276 INFO L87 Difference]: Start difference. First operand 662 states and 1004 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 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 10:39:19,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:39:19,253 INFO L93 Difference]: Finished difference Result 1980 states and 3007 transitions. [2022-10-17 10:39:19,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:39:19,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2022-10-17 10:39:19,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:39:19,262 INFO L225 Difference]: With dead ends: 1980 [2022-10-17 10:39:19,262 INFO L226 Difference]: Without dead ends: 1320 [2022-10-17 10:39:19,266 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 10:39:19,267 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 268 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 961 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 1260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-10-17 10:39:19,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 217 Invalid, 1260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 961 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-10-17 10:39:19,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2022-10-17 10:39:19,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1320. [2022-10-17 10:39:19,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1320 states, 1319 states have (on average 1.4556482183472328) internal successors, (1920), 1319 states have internal predecessors, (1920), 0 states have call successors, (0), 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 10:39:19,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 1920 transitions. [2022-10-17 10:39:19,312 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 1920 transitions. Word has length 121 [2022-10-17 10:39:19,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:39:19,313 INFO L495 AbstractCegarLoop]: Abstraction has 1320 states and 1920 transitions. [2022-10-17 10:39:19,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 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 10:39:19,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 1920 transitions. [2022-10-17 10:39:19,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-10-17 10:39:19,315 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:39:19,316 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:39:19,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:39:19,316 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:39:19,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:39:19,317 INFO L85 PathProgramCache]: Analyzing trace with hash 217031015, now seen corresponding path program 1 times [2022-10-17 10:39:19,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:39:19,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739289409] [2022-10-17 10:39:19,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:39:19,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:39:19,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:39:19,499 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:39:19,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:39:19,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739289409] [2022-10-17 10:39:19,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739289409] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:39:19,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:39:19,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:39:19,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244285556] [2022-10-17 10:39:19,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:39:19,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:39:19,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:39:19,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:39:19,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:39:19,508 INFO L87 Difference]: Start difference. First operand 1320 states and 1920 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:39:21,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:39:21,344 INFO L93 Difference]: Finished difference Result 3954 states and 5755 transitions. [2022-10-17 10:39:21,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:39:21,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-10-17 10:39:21,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:39:21,364 INFO L225 Difference]: With dead ends: 3954 [2022-10-17 10:39:21,365 INFO L226 Difference]: Without dead ends: 2636 [2022-10-17 10:39:21,368 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 10:39:21,377 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 369 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 368 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 368 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-10-17 10:39:21,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 155 Invalid, 1179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [368 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-10-17 10:39:21,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2636 states. [2022-10-17 10:39:21,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2636 to 2636. [2022-10-17 10:39:21,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2636 states, 2635 states have (on average 1.3240986717267553) internal successors, (3489), 2635 states have internal predecessors, (3489), 0 states have call successors, (0), 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 10:39:21,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2636 states to 2636 states and 3489 transitions. [2022-10-17 10:39:21,457 INFO L78 Accepts]: Start accepts. Automaton has 2636 states and 3489 transitions. Word has length 132 [2022-10-17 10:39:21,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:39:21,460 INFO L495 AbstractCegarLoop]: Abstraction has 2636 states and 3489 transitions. [2022-10-17 10:39:21,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:39:21,460 INFO L276 IsEmpty]: Start isEmpty. Operand 2636 states and 3489 transitions. [2022-10-17 10:39:21,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2022-10-17 10:39:21,469 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:39:21,470 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, 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] [2022-10-17 10:39:21,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:39:21,471 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:39:21,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:39:21,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1823842359, now seen corresponding path program 1 times [2022-10-17 10:39:21,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:39:21,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292280194] [2022-10-17 10:39:21,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:39:21,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:39:21,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:39:21,883 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-10-17 10:39:21,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:39:21,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292280194] [2022-10-17 10:39:21,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292280194] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:39:21,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:39:21,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:39:21,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116226460] [2022-10-17 10:39:21,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:39:21,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:39:21,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:39:21,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:39:21,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:39:21,887 INFO L87 Difference]: Start difference. First operand 2636 states and 3489 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 0 states have call successors, (0), 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 10:39:23,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:39:23,552 INFO L93 Difference]: Finished difference Result 6586 states and 8545 transitions. [2022-10-17 10:39:23,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:39:23,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 0 states have call successors, (0), 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 250 [2022-10-17 10:39:23,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:39:23,578 INFO L225 Difference]: With dead ends: 6586 [2022-10-17 10:39:23,578 INFO L226 Difference]: Without dead ends: 3952 [2022-10-17 10:39:23,583 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 10:39:23,594 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 277 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-10-17 10:39:23,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 84 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 883 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-10-17 10:39:23,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3952 states. [2022-10-17 10:39:23,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3952 to 3952. [2022-10-17 10:39:23,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3952 states, 3951 states have (on average 1.216400911161731) internal successors, (4806), 3951 states have internal predecessors, (4806), 0 states have call successors, (0), 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 10:39:23,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3952 states to 3952 states and 4806 transitions. [2022-10-17 10:39:23,706 INFO L78 Accepts]: Start accepts. Automaton has 3952 states and 4806 transitions. Word has length 250 [2022-10-17 10:39:23,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:39:23,709 INFO L495 AbstractCegarLoop]: Abstraction has 3952 states and 4806 transitions. [2022-10-17 10:39:23,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 0 states have call successors, (0), 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 10:39:23,710 INFO L276 IsEmpty]: Start isEmpty. Operand 3952 states and 4806 transitions. [2022-10-17 10:39:23,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-10-17 10:39:23,718 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:39:23,719 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:39:23,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:39:23,719 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:39:23,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:39:23,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1018699418, now seen corresponding path program 1 times [2022-10-17 10:39:23,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:39:23,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657649073] [2022-10-17 10:39:23,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:39:23,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:39:23,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:39:24,756 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:39:24,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:39:24,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657649073] [2022-10-17 10:39:24,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657649073] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:39:24,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:39:24,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:39:24,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837440172] [2022-10-17 10:39:24,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:39:24,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:39:24,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:39:24,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:39:24,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:39:24,763 INFO L87 Difference]: Start difference. First operand 3952 states and 4806 transitions. Second operand has 4 states, 4 states have (on average 74.5) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 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 10:39:26,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:39:26,651 INFO L93 Difference]: Finished difference Result 8269 states and 9989 transitions. [2022-10-17 10:39:26,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:39:26,652 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 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 298 [2022-10-17 10:39:26,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:39:26,679 INFO L225 Difference]: With dead ends: 8269 [2022-10-17 10:39:26,680 INFO L226 Difference]: Without dead ends: 4319 [2022-10-17 10:39:26,684 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 10:39:26,686 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 175 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 1238 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 1435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 1238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-10-17 10:39:26,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 371 Invalid, 1435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 1238 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-10-17 10:39:26,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4319 states. [2022-10-17 10:39:26,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4319 to 4281. [2022-10-17 10:39:26,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4281 states, 4280 states have (on average 1.2011682242990653) internal successors, (5141), 4280 states have internal predecessors, (5141), 0 states have call successors, (0), 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 10:39:26,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4281 states to 4281 states and 5141 transitions. [2022-10-17 10:39:26,820 INFO L78 Accepts]: Start accepts. Automaton has 4281 states and 5141 transitions. Word has length 298 [2022-10-17 10:39:26,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:39:26,822 INFO L495 AbstractCegarLoop]: Abstraction has 4281 states and 5141 transitions. [2022-10-17 10:39:26,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 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 10:39:26,826 INFO L276 IsEmpty]: Start isEmpty. Operand 4281 states and 5141 transitions. [2022-10-17 10:39:26,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2022-10-17 10:39:26,836 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:39:26,837 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-10-17 10:39:26,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:39:26,838 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:39:26,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:39:26,839 INFO L85 PathProgramCache]: Analyzing trace with hash 622231188, now seen corresponding path program 1 times [2022-10-17 10:39:26,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:39:26,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424996999] [2022-10-17 10:39:26,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:39:26,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:39:26,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:39:27,776 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 10:39:27,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:39:27,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424996999] [2022-10-17 10:39:27,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424996999] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:39:27,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:39:27,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:39:27,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909839410] [2022-10-17 10:39:27,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:39:27,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:39:27,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:39:27,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:39:27,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:39:27,780 INFO L87 Difference]: Start difference. First operand 4281 states and 5141 transitions. Second operand has 7 states, 7 states have (on average 55.0) internal successors, (385), 6 states have internal predecessors, (385), 0 states have call successors, (0), 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 10:39:30,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:39:30,164 INFO L93 Difference]: Finished difference Result 8090 states and 9792 transitions. [2022-10-17 10:39:30,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:39:30,165 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 55.0) internal successors, (385), 6 states have internal predecessors, (385), 0 states have call successors, (0), 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 385 [2022-10-17 10:39:30,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:39:30,187 INFO L225 Difference]: With dead ends: 8090 [2022-10-17 10:39:30,187 INFO L226 Difference]: Without dead ends: 3952 [2022-10-17 10:39:30,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:39:30,194 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 392 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 1526 mSolverCounterSat, 485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 2011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 485 IncrementalHoareTripleChecker+Valid, 1526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:39:30,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 286 Invalid, 2011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [485 Valid, 1526 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-10-17 10:39:30,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3952 states. [2022-10-17 10:39:30,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3952 to 3952. [2022-10-17 10:39:30,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3952 states, 3951 states have (on average 1.0802328524424196) internal successors, (4268), 3951 states have internal predecessors, (4268), 0 states have call successors, (0), 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 10:39:30,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3952 states to 3952 states and 4268 transitions. [2022-10-17 10:39:30,294 INFO L78 Accepts]: Start accepts. Automaton has 3952 states and 4268 transitions. Word has length 385 [2022-10-17 10:39:30,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:39:30,295 INFO L495 AbstractCegarLoop]: Abstraction has 3952 states and 4268 transitions. [2022-10-17 10:39:30,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 55.0) internal successors, (385), 6 states have internal predecessors, (385), 0 states have call successors, (0), 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 10:39:30,296 INFO L276 IsEmpty]: Start isEmpty. Operand 3952 states and 4268 transitions. [2022-10-17 10:39:30,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2022-10-17 10:39:30,304 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:39:30,305 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-10-17 10:39:30,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:39:30,305 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:39:30,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:39:30,306 INFO L85 PathProgramCache]: Analyzing trace with hash 2063695020, now seen corresponding path program 1 times [2022-10-17 10:39:30,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:39:30,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561601758] [2022-10-17 10:39:30,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:39:30,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:39:30,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:39:30,847 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-10-17 10:39:30,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:39:30,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561601758] [2022-10-17 10:39:30,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561601758] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:39:30,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:39:30,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:39:30,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308616466] [2022-10-17 10:39:30,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:39:30,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:39:30,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:39:30,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:39:30,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:39:30,850 INFO L87 Difference]: Start difference. First operand 3952 states and 4268 transitions. Second operand has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 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 10:39:32,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:39:32,159 INFO L93 Difference]: Finished difference Result 9218 states and 10060 transitions. [2022-10-17 10:39:32,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:39:32,160 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 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 392 [2022-10-17 10:39:32,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:39:32,195 INFO L225 Difference]: With dead ends: 9218 [2022-10-17 10:39:32,195 INFO L226 Difference]: Without dead ends: 5597 [2022-10-17 10:39:32,201 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 10:39:32,203 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 282 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:39:32,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 406 Invalid, 883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-10-17 10:39:32,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5597 states. [2022-10-17 10:39:32,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5597 to 5597. [2022-10-17 10:39:32,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5597 states, 5596 states have (on average 1.0748749106504647) internal successors, (6015), 5596 states have internal predecessors, (6015), 0 states have call successors, (0), 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 10:39:32,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5597 states to 5597 states and 6015 transitions. [2022-10-17 10:39:32,443 INFO L78 Accepts]: Start accepts. Automaton has 5597 states and 6015 transitions. Word has length 392 [2022-10-17 10:39:32,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:39:32,444 INFO L495 AbstractCegarLoop]: Abstraction has 5597 states and 6015 transitions. [2022-10-17 10:39:32,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 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 10:39:32,445 INFO L276 IsEmpty]: Start isEmpty. Operand 5597 states and 6015 transitions. [2022-10-17 10:39:32,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2022-10-17 10:39:32,458 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:39:32,459 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-10-17 10:39:32,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 10:39:32,460 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:39:32,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:39:32,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1084367381, now seen corresponding path program 1 times [2022-10-17 10:39:32,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:39:32,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915679673] [2022-10-17 10:39:32,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:39:32,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:39:32,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:39:33,057 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:39:33,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:39:33,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915679673] [2022-10-17 10:39:33,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915679673] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:39:33,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:39:33,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:39:33,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390323354] [2022-10-17 10:39:33,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:39:33,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:39:33,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:39:33,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:39:33,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:39:33,061 INFO L87 Difference]: Start difference. First operand 5597 states and 6015 transitions. Second operand has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 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 10:39:34,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:39:34,274 INFO L93 Difference]: Finished difference Result 10863 states and 11697 transitions. [2022-10-17 10:39:34,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:39:34,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 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 447 [2022-10-17 10:39:34,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:39:34,305 INFO L225 Difference]: With dead ends: 10863 [2022-10-17 10:39:34,305 INFO L226 Difference]: Without dead ends: 5597 [2022-10-17 10:39:34,312 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 10:39:34,313 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 178 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:39:34,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 417 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-10-17 10:39:34,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5597 states. [2022-10-17 10:39:34,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5597 to 5597. [2022-10-17 10:39:34,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5597 states, 5596 states have (on average 1.0491422444603289) internal successors, (5871), 5596 states have internal predecessors, (5871), 0 states have call successors, (0), 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 10:39:34,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5597 states to 5597 states and 5871 transitions. [2022-10-17 10:39:34,440 INFO L78 Accepts]: Start accepts. Automaton has 5597 states and 5871 transitions. Word has length 447 [2022-10-17 10:39:34,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:39:34,441 INFO L495 AbstractCegarLoop]: Abstraction has 5597 states and 5871 transitions. [2022-10-17 10:39:34,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 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 10:39:34,441 INFO L276 IsEmpty]: Start isEmpty. Operand 5597 states and 5871 transitions. [2022-10-17 10:39:34,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2022-10-17 10:39:34,456 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:39:34,457 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 10:39:34,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 10:39:34,457 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:39:34,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:39:34,458 INFO L85 PathProgramCache]: Analyzing trace with hash 626368597, now seen corresponding path program 1 times [2022-10-17 10:39:34,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:39:34,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773237427] [2022-10-17 10:39:34,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:39:34,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:39:34,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:39:35,132 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 335 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:39:35,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:39:35,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773237427] [2022-10-17 10:39:35,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773237427] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:39:35,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:39:35,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:39:35,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528285544] [2022-10-17 10:39:35,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:39:35,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:39:35,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:39:35,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:39:35,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:39:35,147 INFO L87 Difference]: Start difference. First operand 5597 states and 5871 transitions. Second operand has 4 states, 4 states have (on average 132.75) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)