./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.14.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5ff188-f3c4-40bb-8923-ed86c562dac6/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5ff188-f3c4-40bb-8923-ed86c562dac6/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5ff188-f3c4-40bb-8923-ed86c562dac6/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5ff188-f3c4-40bb-8923-ed86c562dac6/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.14.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5ff188-f3c4-40bb-8923-ed86c562dac6/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5ff188-f3c4-40bb-8923-ed86c562dac6/bin/uautomizer-ug76WZFUDN --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 38a1f42f3cb7a9f66fd0bd1b473ab60f2efbe0fc9c998d9f18da86c331297566 --- 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-6b4ec56 [2022-11-20 10:48:15,871 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:48:15,873 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:48:15,895 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:48:15,896 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:48:15,897 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:48:15,899 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:48:15,901 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:48:15,903 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:48:15,904 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:48:15,905 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:48:15,906 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:48:15,907 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:48:15,908 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:48:15,909 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:48:15,910 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:48:15,911 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:48:15,912 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:48:15,914 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:48:15,916 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:48:15,918 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:48:15,920 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:48:15,921 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:48:15,923 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:48:15,927 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:48:15,927 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:48:15,928 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:48:15,929 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:48:15,929 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:48:15,931 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:48:15,931 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:48:15,932 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:48:15,933 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:48:15,934 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:48:15,935 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:48:15,935 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:48:15,936 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:48:15,937 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:48:15,937 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:48:15,938 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:48:15,939 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:48:15,940 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5ff188-f3c4-40bb-8923-ed86c562dac6/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 10:48:15,964 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:48:15,964 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:48:15,964 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:48:15,965 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:48:15,966 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:48:15,966 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:48:15,967 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:48:15,967 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:48:15,967 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:48:15,968 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:48:15,968 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:48:15,968 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:48:15,968 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:48:15,969 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:48:15,969 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:48:15,969 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:48:15,970 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:48:15,970 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:48:15,970 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:48:15,970 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:48:15,971 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:48:15,971 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:48:15,971 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:48:15,972 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:48:15,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:48:15,972 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:48:15,973 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:48:15,973 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:48:15,973 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:48:15,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:48:15,974 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:48:15,974 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:48:15,974 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:48:15,974 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_6f5ff188-f3c4-40bb-8923-ed86c562dac6/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5ff188-f3c4-40bb-8923-ed86c562dac6/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 38a1f42f3cb7a9f66fd0bd1b473ab60f2efbe0fc9c998d9f18da86c331297566 [2022-11-20 10:48:16,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:48:16,230 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:48:16,233 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:48:16,234 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:48:16,235 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:48:16,236 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5ff188-f3c4-40bb-8923-ed86c562dac6/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.14.cil.c [2022-11-20 10:48:19,577 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:48:20,333 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:48:20,335 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5ff188-f3c4-40bb-8923-ed86c562dac6/sv-benchmarks/c/combinations/Problem05_label49+token_ring.14.cil.c [2022-11-20 10:48:20,388 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5ff188-f3c4-40bb-8923-ed86c562dac6/bin/uautomizer-ug76WZFUDN/data/cf4eca767/edc3e2be660848d7810b0e19a1f24f7a/FLAGc1254fcab [2022-11-20 10:48:20,425 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5ff188-f3c4-40bb-8923-ed86c562dac6/bin/uautomizer-ug76WZFUDN/data/cf4eca767/edc3e2be660848d7810b0e19a1f24f7a [2022-11-20 10:48:20,431 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:48:20,434 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:48:20,440 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:48:20,440 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:48:20,445 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:48:20,446 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:48:20" (1/1) ... [2022-11-20 10:48:20,447 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bc1f236 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:20, skipping insertion in model container [2022-11-20 10:48:20,448 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:48:20" (1/1) ... [2022-11-20 10:48:20,458 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:48:20,781 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:48:22,980 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5ff188-f3c4-40bb-8923-ed86c562dac6/sv-benchmarks/c/combinations/Problem05_label49+token_ring.14.cil.c[380593,380606] [2022-11-20 10:48:23,009 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5ff188-f3c4-40bb-8923-ed86c562dac6/sv-benchmarks/c/combinations/Problem05_label49+token_ring.14.cil.c[383339,383352] [2022-11-20 10:48:23,479 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:48:23,496 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:48:24,834 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5ff188-f3c4-40bb-8923-ed86c562dac6/sv-benchmarks/c/combinations/Problem05_label49+token_ring.14.cil.c[380593,380606] [2022-11-20 10:48:24,847 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5ff188-f3c4-40bb-8923-ed86c562dac6/sv-benchmarks/c/combinations/Problem05_label49+token_ring.14.cil.c[383339,383352] [2022-11-20 10:48:24,891 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:48:24,970 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:48:24,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:24 WrapperNode [2022-11-20 10:48:24,971 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:48:24,972 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:48:24,972 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:48:24,972 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:48:24,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:24" (1/1) ... [2022-11-20 10:48:25,054 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:24" (1/1) ... [2022-11-20 10:48:25,389 INFO L138 Inliner]: procedures = 68, calls = 78, calls flagged for inlining = 45, calls inlined = 45, statements flattened = 13202 [2022-11-20 10:48:25,389 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:48:25,390 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:48:25,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:48:25,390 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:48:25,400 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:24" (1/1) ... [2022-11-20 10:48:25,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:24" (1/1) ... [2022-11-20 10:48:25,463 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:24" (1/1) ... [2022-11-20 10:48:25,463 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:24" (1/1) ... [2022-11-20 10:48:25,787 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:24" (1/1) ... [2022-11-20 10:48:25,841 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:24" (1/1) ... [2022-11-20 10:48:25,871 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:24" (1/1) ... [2022-11-20 10:48:25,890 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:24" (1/1) ... [2022-11-20 10:48:26,104 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:48:26,117 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:48:26,118 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:48:26,118 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:48:26,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:24" (1/1) ... [2022-11-20 10:48:26,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:48:26,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5ff188-f3c4-40bb-8923-ed86c562dac6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:48:26,166 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5ff188-f3c4-40bb-8923-ed86c562dac6/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:48:26,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f5ff188-f3c4-40bb-8923-ed86c562dac6/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:48:26,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:48:26,281 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-20 10:48:26,281 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-20 10:48:26,281 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-20 10:48:26,281 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-20 10:48:26,281 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-20 10:48:26,281 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-20 10:48:26,282 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-11-20 10:48:26,282 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-11-20 10:48:26,282 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-20 10:48:26,282 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-20 10:48:26,282 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-20 10:48:26,282 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-20 10:48:26,282 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-20 10:48:26,282 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-20 10:48:26,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:48:26,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:48:26,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:48:26,556 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:48:26,558 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:48:36,748 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:48:36,781 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:48:36,782 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-11-20 10:48:36,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:48:36 BoogieIcfgContainer [2022-11-20 10:48:36,786 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:48:36,788 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:48:36,789 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:48:36,792 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:48:36,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:48:20" (1/3) ... [2022-11-20 10:48:36,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b1212fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:48:36, skipping insertion in model container [2022-11-20 10:48:36,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:24" (2/3) ... [2022-11-20 10:48:36,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b1212fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:48:36, skipping insertion in model container [2022-11-20 10:48:36,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:48:36" (3/3) ... [2022-11-20 10:48:36,795 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.14.cil.c [2022-11-20 10:48:36,815 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:48:36,815 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-20 10:48:36,909 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:48:36,916 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;@11c78f0d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:48:36,917 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-20 10:48:36,930 INFO L276 IsEmpty]: Start isEmpty. Operand has 2571 states, 2533 states have (on average 1.843268851164627) internal successors, (4669), 2538 states have internal predecessors, (4669), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2022-11-20 10:48:36,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-20 10:48:36,951 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:48:36,952 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:48:36,953 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:48:36,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:36,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1261108038, now seen corresponding path program 1 times [2022-11-20 10:48:36,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:36,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198371008] [2022-11-20 10:48:36,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:36,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:37,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:37,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:48:37,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:37,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 10:48:37,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:37,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:48:37,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:37,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-20 10:48:37,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:37,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-20 10:48:37,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:37,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:48:37,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:48:37,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198371008] [2022-11-20 10:48:37,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198371008] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:48:37,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:48:37,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:48:37,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705245761] [2022-11-20 10:48:37,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:48:37,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:48:37,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:48:37,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:48:37,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:48:37,760 INFO L87 Difference]: Start difference. First operand has 2571 states, 2533 states have (on average 1.843268851164627) internal successors, (4669), 2538 states have internal predecessors, (4669), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:48:41,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:48:41,136 INFO L93 Difference]: Finished difference Result 5277 states and 9684 transitions. [2022-11-20 10:48:41,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:48:41,138 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-20 10:48:41,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:48:41,167 INFO L225 Difference]: With dead ends: 5277 [2022-11-20 10:48:41,167 INFO L226 Difference]: Without dead ends: 2645 [2022-11-20 10:48:41,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:48:41,182 INFO L413 NwaCegarLoop]: 4377 mSDtfsCounter, 1048 mSDsluCounter, 12475 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 16852 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:48:41,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1072 Valid, 16852 Invalid, 1097 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [60 Valid, 1037 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-20 10:48:41,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2645 states. [2022-11-20 10:48:41,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2645 to 2503. [2022-11-20 10:48:41,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2503 states, 2467 states have (on average 1.8265099310903932) internal successors, (4506), 2470 states have internal predecessors, (4506), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-11-20 10:48:41,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2503 states to 2503 states and 4560 transitions. [2022-11-20 10:48:41,377 INFO L78 Accepts]: Start accepts. Automaton has 2503 states and 4560 transitions. Word has length 179 [2022-11-20 10:48:41,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:48:41,377 INFO L495 AbstractCegarLoop]: Abstraction has 2503 states and 4560 transitions. [2022-11-20 10:48:41,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:48:41,378 INFO L276 IsEmpty]: Start isEmpty. Operand 2503 states and 4560 transitions. [2022-11-20 10:48:41,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-20 10:48:41,383 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:48:41,384 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:48:41,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:48:41,384 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:48:41,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:41,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1530760952, now seen corresponding path program 1 times [2022-11-20 10:48:41,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:41,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163273744] [2022-11-20 10:48:41,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:41,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:41,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:41,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:48:41,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:41,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 10:48:41,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:41,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:48:41,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:41,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-20 10:48:41,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:41,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-20 10:48:41,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:41,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:48:41,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:48:41,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163273744] [2022-11-20 10:48:41,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163273744] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:48:41,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:48:41,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:48:41,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863695862] [2022-11-20 10:48:41,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:48:41,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:48:41,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:48:41,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:48:41,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:48:41,685 INFO L87 Difference]: Start difference. First operand 2503 states and 4560 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:48:44,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:48:44,675 INFO L93 Difference]: Finished difference Result 3012 states and 5382 transitions. [2022-11-20 10:48:44,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:48:44,676 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-20 10:48:44,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:48:44,688 INFO L225 Difference]: With dead ends: 3012 [2022-11-20 10:48:44,689 INFO L226 Difference]: Without dead ends: 2645 [2022-11-20 10:48:44,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:48:44,692 INFO L413 NwaCegarLoop]: 4307 mSDtfsCounter, 1034 mSDsluCounter, 12272 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 16579 SdHoareTripleChecker+Invalid, 1096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:48:44,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1058 Valid, 16579 Invalid, 1096 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [60 Valid, 1036 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-20 10:48:44,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2645 states. [2022-11-20 10:48:44,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2645 to 2503. [2022-11-20 10:48:44,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2503 states, 2467 states have (on average 1.8261045804620997) internal successors, (4505), 2470 states have internal predecessors, (4505), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-11-20 10:48:44,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2503 states to 2503 states and 4559 transitions. [2022-11-20 10:48:44,798 INFO L78 Accepts]: Start accepts. Automaton has 2503 states and 4559 transitions. Word has length 179 [2022-11-20 10:48:44,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:48:44,799 INFO L495 AbstractCegarLoop]: Abstraction has 2503 states and 4559 transitions. [2022-11-20 10:48:44,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:48:44,800 INFO L276 IsEmpty]: Start isEmpty. Operand 2503 states and 4559 transitions. [2022-11-20 10:48:44,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-20 10:48:44,803 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:48:44,803 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:48:44,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:48:44,804 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:48:44,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:44,805 INFO L85 PathProgramCache]: Analyzing trace with hash -2101032758, now seen corresponding path program 1 times [2022-11-20 10:48:44,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:44,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585964708] [2022-11-20 10:48:44,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:44,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:44,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:44,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:48:44,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:44,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 10:48:45,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:45,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:48:45,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:45,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-20 10:48:45,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:45,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-20 10:48:45,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:45,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:48:45,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:48:45,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585964708] [2022-11-20 10:48:45,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585964708] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:48:45,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:48:45,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:48:45,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707190923] [2022-11-20 10:48:45,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:48:45,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:48:45,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:48:45,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:48:45,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:48:45,228 INFO L87 Difference]: Start difference. First operand 2503 states and 4559 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:48:50,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:48:50,035 INFO L93 Difference]: Finished difference Result 3529 states and 6222 transitions. [2022-11-20 10:48:50,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 10:48:50,037 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-20 10:48:50,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:48:50,054 INFO L225 Difference]: With dead ends: 3529 [2022-11-20 10:48:50,055 INFO L226 Difference]: Without dead ends: 3167 [2022-11-20 10:48:50,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-20 10:48:50,071 INFO L413 NwaCegarLoop]: 4312 mSDtfsCounter, 5529 mSDsluCounter, 12838 mSDsCounter, 0 mSdLazyCounter, 2379 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5548 SdHoareTripleChecker+Valid, 17150 SdHoareTripleChecker+Invalid, 2495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-20 10:48:50,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5548 Valid, 17150 Invalid, 2495 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [116 Valid, 2379 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-20 10:48:50,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3167 states. [2022-11-20 10:48:50,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3167 to 2882. [2022-11-20 10:48:50,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2882 states, 2818 states have (on average 1.798083747338538) internal successors, (5067), 2822 states have internal predecessors, (5067), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2022-11-20 10:48:50,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2882 states to 2882 states and 5166 transitions. [2022-11-20 10:48:50,256 INFO L78 Accepts]: Start accepts. Automaton has 2882 states and 5166 transitions. Word has length 179 [2022-11-20 10:48:50,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:48:50,256 INFO L495 AbstractCegarLoop]: Abstraction has 2882 states and 5166 transitions. [2022-11-20 10:48:50,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:48:50,257 INFO L276 IsEmpty]: Start isEmpty. Operand 2882 states and 5166 transitions. [2022-11-20 10:48:50,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-20 10:48:50,260 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:48:50,260 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:48:50,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 10:48:50,261 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:48:50,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:50,262 INFO L85 PathProgramCache]: Analyzing trace with hash 808194758, now seen corresponding path program 1 times [2022-11-20 10:48:50,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:50,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161276248] [2022-11-20 10:48:50,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:50,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:50,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:50,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:48:50,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:50,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 10:48:50,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:50,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:48:50,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:50,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-20 10:48:50,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:50,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-20 10:48:50,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:50,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:48:50,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:48:50,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161276248] [2022-11-20 10:48:50,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161276248] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:48:50,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:48:50,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:48:50,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669808504] [2022-11-20 10:48:50,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:48:50,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:48:50,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:48:50,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:48:50,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:48:50,668 INFO L87 Difference]: Start difference. First operand 2882 states and 5166 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:48:56,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:48:56,346 INFO L93 Difference]: Finished difference Result 4448 states and 7708 transitions. [2022-11-20 10:48:56,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 10:48:56,348 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-20 10:48:56,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:48:56,364 INFO L225 Difference]: With dead ends: 4448 [2022-11-20 10:48:56,365 INFO L226 Difference]: Without dead ends: 3707 [2022-11-20 10:48:56,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 10:48:56,370 INFO L413 NwaCegarLoop]: 4522 mSDtfsCounter, 5562 mSDsluCounter, 17748 mSDsCounter, 0 mSdLazyCounter, 3597 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5581 SdHoareTripleChecker+Valid, 22270 SdHoareTripleChecker+Invalid, 3664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:48:56,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5581 Valid, 22270 Invalid, 3664 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 3597 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-20 10:48:56,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3707 states. [2022-11-20 10:48:56,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3707 to 3234. [2022-11-20 10:48:56,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3234 states, 3142 states have (on average 1.7743475493316359) internal successors, (5575), 3147 states have internal predecessors, (5575), 70 states have call successors, (70), 19 states have call predecessors, (70), 20 states have return successors, (73), 69 states have call predecessors, (73), 68 states have call successors, (73) [2022-11-20 10:48:56,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3234 states to 3234 states and 5718 transitions. [2022-11-20 10:48:56,676 INFO L78 Accepts]: Start accepts. Automaton has 3234 states and 5718 transitions. Word has length 179 [2022-11-20 10:48:56,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:48:56,677 INFO L495 AbstractCegarLoop]: Abstraction has 3234 states and 5718 transitions. [2022-11-20 10:48:56,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:48:56,678 INFO L276 IsEmpty]: Start isEmpty. Operand 3234 states and 5718 transitions. [2022-11-20 10:48:56,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-20 10:48:56,681 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:48:56,681 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:48:56,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 10:48:56,682 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:48:56,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:56,683 INFO L85 PathProgramCache]: Analyzing trace with hash -961276856, now seen corresponding path program 1 times [2022-11-20 10:48:56,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:56,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194029608] [2022-11-20 10:48:56,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:56,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:56,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:56,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:48:56,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:56,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 10:48:56,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:57,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:48:57,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:57,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-20 10:48:57,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:57,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-20 10:48:57,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:57,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:48:57,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:48:57,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194029608] [2022-11-20 10:48:57,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194029608] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:48:57,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:48:57,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:48:57,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198450009] [2022-11-20 10:48:57,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:48:57,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:48:57,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:48:57,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:48:57,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:48:57,057 INFO L87 Difference]: Start difference. First operand 3234 states and 5718 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:49:02,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:49:02,679 INFO L93 Difference]: Finished difference Result 5803 states and 9880 transitions. [2022-11-20 10:49:02,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 10:49:02,680 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-20 10:49:02,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:49:02,702 INFO L225 Difference]: With dead ends: 5803 [2022-11-20 10:49:02,702 INFO L226 Difference]: Without dead ends: 4710 [2022-11-20 10:49:02,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 10:49:02,708 INFO L413 NwaCegarLoop]: 4317 mSDtfsCounter, 5676 mSDsluCounter, 17090 mSDsCounter, 0 mSdLazyCounter, 3185 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5695 SdHoareTripleChecker+Valid, 21407 SdHoareTripleChecker+Invalid, 3292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 3185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:49:02,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5695 Valid, 21407 Invalid, 3292 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [107 Valid, 3185 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-20 10:49:02,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4710 states. [2022-11-20 10:49:02,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4710 to 3939. [2022-11-20 10:49:03,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3939 states, 3791 states have (on average 1.738855183328937) internal successors, (6592), 3798 states have internal predecessors, (6592), 112 states have call successors, (112), 31 states have call predecessors, (112), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2022-11-20 10:49:03,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3939 states to 3939 states and 6827 transitions. [2022-11-20 10:49:03,014 INFO L78 Accepts]: Start accepts. Automaton has 3939 states and 6827 transitions. Word has length 179 [2022-11-20 10:49:03,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:49:03,015 INFO L495 AbstractCegarLoop]: Abstraction has 3939 states and 6827 transitions. [2022-11-20 10:49:03,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:49:03,015 INFO L276 IsEmpty]: Start isEmpty. Operand 3939 states and 6827 transitions. [2022-11-20 10:49:03,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-20 10:49:03,019 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:49:03,019 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:03,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 10:49:03,020 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:49:03,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:03,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1572545914, now seen corresponding path program 1 times [2022-11-20 10:49:03,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:03,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058997910] [2022-11-20 10:49:03,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:03,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:03,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:03,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:49:03,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:03,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 10:49:03,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:03,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:49:03,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:03,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-20 10:49:03,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:03,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-20 10:49:03,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:03,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:03,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:03,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058997910] [2022-11-20 10:49:03,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058997910] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:03,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:49:03,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:49:03,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329194416] [2022-11-20 10:49:03,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:03,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:49:03,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:03,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:49:03,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:49:03,460 INFO L87 Difference]: Start difference. First operand 3939 states and 6827 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:49:09,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:49:09,424 INFO L93 Difference]: Finished difference Result 8408 states and 14029 transitions. [2022-11-20 10:49:09,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 10:49:09,425 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-20 10:49:09,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:49:09,474 INFO L225 Difference]: With dead ends: 8408 [2022-11-20 10:49:09,474 INFO L226 Difference]: Without dead ends: 6610 [2022-11-20 10:49:09,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 10:49:09,488 INFO L413 NwaCegarLoop]: 4520 mSDtfsCounter, 5560 mSDsluCounter, 17748 mSDsCounter, 0 mSdLazyCounter, 3586 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5579 SdHoareTripleChecker+Valid, 22268 SdHoareTripleChecker+Invalid, 3655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-20 10:49:09,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5579 Valid, 22268 Invalid, 3655 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 3586 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-20 10:49:09,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6610 states. [2022-11-20 10:49:10,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6610 to 5350. [2022-11-20 10:49:10,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5350 states, 5090 states have (on average 1.694695481335953) internal successors, (8626), 5101 states have internal predecessors, (8626), 196 states have call successors, (196), 55 states have call predecessors, (196), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2022-11-20 10:49:10,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5350 states to 5350 states and 9051 transitions. [2022-11-20 10:49:10,138 INFO L78 Accepts]: Start accepts. Automaton has 5350 states and 9051 transitions. Word has length 179 [2022-11-20 10:49:10,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:49:10,138 INFO L495 AbstractCegarLoop]: Abstraction has 5350 states and 9051 transitions. [2022-11-20 10:49:10,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:49:10,140 INFO L276 IsEmpty]: Start isEmpty. Operand 5350 states and 9051 transitions. [2022-11-20 10:49:10,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-20 10:49:10,143 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:49:10,143 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:10,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 10:49:10,144 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:49:10,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:10,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1317229704, now seen corresponding path program 1 times [2022-11-20 10:49:10,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:10,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770380982] [2022-11-20 10:49:10,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:10,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:10,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:10,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:49:10,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:10,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 10:49:10,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:10,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:49:10,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:10,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-20 10:49:10,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:10,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-20 10:49:10,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:10,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:10,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:10,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770380982] [2022-11-20 10:49:10,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770380982] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:10,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:49:10,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:49:10,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370990028] [2022-11-20 10:49:10,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:10,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:49:10,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:10,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:49:10,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:49:10,532 INFO L87 Difference]: Start difference. First operand 5350 states and 9051 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:49:17,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:49:17,318 INFO L93 Difference]: Finished difference Result 13610 states and 22331 transitions. [2022-11-20 10:49:17,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 10:49:17,319 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-20 10:49:17,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:49:17,361 INFO L225 Difference]: With dead ends: 13610 [2022-11-20 10:49:17,362 INFO L226 Difference]: Without dead ends: 10401 [2022-11-20 10:49:17,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 10:49:17,376 INFO L413 NwaCegarLoop]: 4520 mSDtfsCounter, 5556 mSDsluCounter, 17748 mSDsCounter, 0 mSdLazyCounter, 3558 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5575 SdHoareTripleChecker+Valid, 22268 SdHoareTripleChecker+Invalid, 3627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-20 10:49:17,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5575 Valid, 22268 Invalid, 3627 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 3558 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-20 10:49:17,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10401 states. [2022-11-20 10:49:18,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10401 to 8186. [2022-11-20 10:49:18,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8186 states, 7702 states have (on average 1.6512594131394442) internal successors, (12718), 7721 states have internal predecessors, (12718), 364 states have call successors, (364), 103 states have call predecessors, (364), 118 states have return successors, (459), 377 states have call predecessors, (459), 362 states have call successors, (459) [2022-11-20 10:49:18,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8186 states to 8186 states and 13541 transitions. [2022-11-20 10:49:18,527 INFO L78 Accepts]: Start accepts. Automaton has 8186 states and 13541 transitions. Word has length 179 [2022-11-20 10:49:18,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:49:18,528 INFO L495 AbstractCegarLoop]: Abstraction has 8186 states and 13541 transitions. [2022-11-20 10:49:18,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:49:18,528 INFO L276 IsEmpty]: Start isEmpty. Operand 8186 states and 13541 transitions. [2022-11-20 10:49:18,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-20 10:49:18,534 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:49:18,534 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:18,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 10:49:18,534 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:49:18,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:18,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1531156726, now seen corresponding path program 1 times [2022-11-20 10:49:18,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:18,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79390913] [2022-11-20 10:49:18,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:18,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:18,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:18,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:49:18,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:18,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 10:49:18,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:18,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:49:18,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:18,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-20 10:49:18,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:18,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-20 10:49:18,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:18,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:18,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:18,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79390913] [2022-11-20 10:49:18,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79390913] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:18,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:49:18,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:49:18,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855989082] [2022-11-20 10:49:18,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:18,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:49:18,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:18,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:49:18,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:49:18,920 INFO L87 Difference]: Start difference. First operand 8186 states and 13541 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:49:26,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:49:26,607 INFO L93 Difference]: Finished difference Result 24032 states and 39027 transitions. [2022-11-20 10:49:26,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 10:49:26,608 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-20 10:49:26,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:49:26,682 INFO L225 Difference]: With dead ends: 24032 [2022-11-20 10:49:26,682 INFO L226 Difference]: Without dead ends: 17987 [2022-11-20 10:49:26,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 10:49:26,707 INFO L413 NwaCegarLoop]: 4520 mSDtfsCounter, 5555 mSDsluCounter, 17748 mSDsCounter, 0 mSdLazyCounter, 3545 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5574 SdHoareTripleChecker+Valid, 22268 SdHoareTripleChecker+Invalid, 3614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:49:26,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5574 Valid, 22268 Invalid, 3614 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 3545 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-20 10:49:26,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17987 states. [2022-11-20 10:49:28,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17987 to 13871. [2022-11-20 10:49:28,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13871 states, 12939 states have (on average 1.6168173738310534) internal successors, (20920), 12974 states have internal predecessors, (20920), 700 states have call successors, (700), 199 states have call predecessors, (700), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2022-11-20 10:49:28,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13871 states to 13871 states and 22593 transitions. [2022-11-20 10:49:28,598 INFO L78 Accepts]: Start accepts. Automaton has 13871 states and 22593 transitions. Word has length 179 [2022-11-20 10:49:28,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:49:28,599 INFO L495 AbstractCegarLoop]: Abstraction has 13871 states and 22593 transitions. [2022-11-20 10:49:28,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:49:28,599 INFO L276 IsEmpty]: Start isEmpty. Operand 13871 states and 22593 transitions. [2022-11-20 10:49:28,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-20 10:49:28,609 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:49:28,609 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:28,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 10:49:28,609 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:49:28,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:28,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1840643144, now seen corresponding path program 1 times [2022-11-20 10:49:28,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:28,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384548571] [2022-11-20 10:49:28,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:28,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:28,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:28,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:49:28,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:28,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 10:49:28,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:28,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:49:28,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:28,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-20 10:49:28,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:28,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-20 10:49:28,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:28,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:28,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:28,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384548571] [2022-11-20 10:49:28,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384548571] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:28,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:49:28,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:49:28,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321604423] [2022-11-20 10:49:28,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:28,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:49:28,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:28,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:49:28,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:49:28,957 INFO L87 Difference]: Start difference. First operand 13871 states and 22593 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:49:34,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:49:34,785 INFO L93 Difference]: Finished difference Result 29968 states and 48786 transitions. [2022-11-20 10:49:34,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:49:34,785 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-20 10:49:34,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:49:34,852 INFO L225 Difference]: With dead ends: 29968 [2022-11-20 10:49:34,853 INFO L226 Difference]: Without dead ends: 18238 [2022-11-20 10:49:34,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-20 10:49:34,891 INFO L413 NwaCegarLoop]: 4262 mSDtfsCounter, 5108 mSDsluCounter, 16780 mSDsCounter, 0 mSdLazyCounter, 1813 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5128 SdHoareTripleChecker+Valid, 21042 SdHoareTripleChecker+Invalid, 1883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-20 10:49:34,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5128 Valid, 21042 Invalid, 1883 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [70 Valid, 1813 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-20 10:49:34,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18238 states. [2022-11-20 10:49:37,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18238 to 13871. [2022-11-20 10:49:37,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13871 states, 12939 states have (on average 1.6142669448952778) internal successors, (20887), 12974 states have internal predecessors, (20887), 700 states have call successors, (700), 199 states have call predecessors, (700), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2022-11-20 10:49:37,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13871 states to 13871 states and 22560 transitions. [2022-11-20 10:49:37,113 INFO L78 Accepts]: Start accepts. Automaton has 13871 states and 22560 transitions. Word has length 179 [2022-11-20 10:49:37,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:49:37,114 INFO L495 AbstractCegarLoop]: Abstraction has 13871 states and 22560 transitions. [2022-11-20 10:49:37,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:49:37,115 INFO L276 IsEmpty]: Start isEmpty. Operand 13871 states and 22560 transitions. [2022-11-20 10:49:37,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-20 10:49:37,127 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:49:37,127 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:37,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 10:49:37,128 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:49:37,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:37,128 INFO L85 PathProgramCache]: Analyzing trace with hash -2068461750, now seen corresponding path program 1 times [2022-11-20 10:49:37,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:37,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275023564] [2022-11-20 10:49:37,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:37,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:37,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:37,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:49:37,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:37,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 10:49:37,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:37,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:49:37,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:37,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-20 10:49:37,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:37,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-20 10:49:37,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:37,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:37,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:37,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275023564] [2022-11-20 10:49:37,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275023564] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:37,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:49:37,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:49:37,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954441119] [2022-11-20 10:49:37,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:37,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:49:37,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:37,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:49:37,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:49:37,517 INFO L87 Difference]: Start difference. First operand 13871 states and 22560 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:49:49,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:49:49,054 INFO L93 Difference]: Finished difference Result 44841 states and 72377 transitions. [2022-11-20 10:49:49,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 10:49:49,055 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-20 10:49:49,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:49:49,203 INFO L225 Difference]: With dead ends: 44841 [2022-11-20 10:49:49,203 INFO L226 Difference]: Without dead ends: 33111 [2022-11-20 10:49:49,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 10:49:49,246 INFO L413 NwaCegarLoop]: 4520 mSDtfsCounter, 5547 mSDsluCounter, 17748 mSDsCounter, 0 mSdLazyCounter, 3507 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5566 SdHoareTripleChecker+Valid, 22268 SdHoareTripleChecker+Invalid, 3576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:49:49,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5566 Valid, 22268 Invalid, 3576 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 3507 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-20 10:49:49,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33111 states. [2022-11-20 10:49:53,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33111 to 25305. [2022-11-20 10:49:53,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25305 states, 23477 states have (on average 1.5904502278826085) internal successors, (37339), 23544 states have internal predecessors, (37339), 1372 states have call successors, (1372), 391 states have call predecessors, (1372), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2022-11-20 10:49:53,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25305 states to 25305 states and 40874 transitions. [2022-11-20 10:49:53,266 INFO L78 Accepts]: Start accepts. Automaton has 25305 states and 40874 transitions. Word has length 179 [2022-11-20 10:49:53,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:49:53,267 INFO L495 AbstractCegarLoop]: Abstraction has 25305 states and 40874 transitions. [2022-11-20 10:49:53,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:49:53,267 INFO L276 IsEmpty]: Start isEmpty. Operand 25305 states and 40874 transitions. [2022-11-20 10:49:53,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-20 10:49:53,286 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:49:53,286 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:53,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 10:49:53,287 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:49:53,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:53,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1961858056, now seen corresponding path program 1 times [2022-11-20 10:49:53,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:53,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465790938] [2022-11-20 10:49:53,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:53,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:53,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:53,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:49:53,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:53,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 10:49:53,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:53,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:49:53,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:53,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-20 10:49:53,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:53,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-20 10:49:53,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:53,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:53,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:53,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465790938] [2022-11-20 10:49:53,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465790938] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:53,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:49:53,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:49:53,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921005187] [2022-11-20 10:49:53,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:53,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:49:53,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:53,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:49:53,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:49:53,642 INFO L87 Difference]: Start difference. First operand 25305 states and 40874 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:50:11,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:11,555 INFO L93 Difference]: Finished difference Result 86529 states and 139953 transitions. [2022-11-20 10:50:11,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 10:50:11,556 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-20 10:50:11,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:12,033 INFO L225 Difference]: With dead ends: 86529 [2022-11-20 10:50:12,033 INFO L226 Difference]: Without dead ends: 63365 [2022-11-20 10:50:12,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 10:50:12,124 INFO L413 NwaCegarLoop]: 4520 mSDtfsCounter, 5546 mSDsluCounter, 17748 mSDsCounter, 0 mSdLazyCounter, 3494 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5565 SdHoareTripleChecker+Valid, 22268 SdHoareTripleChecker+Invalid, 3563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:12,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5565 Valid, 22268 Invalid, 3563 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 3494 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-20 10:50:12,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63365 states. [2022-11-20 10:50:20,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63365 to 48234. [2022-11-20 10:50:20,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48234 states, 44614 states have (on average 1.5764782355314475) internal successors, (70333), 44745 states have internal predecessors, (70333), 2716 states have call successors, (2716), 775 states have call predecessors, (2716), 902 states have return successors, (5029), 2841 states have call predecessors, (5029), 2714 states have call successors, (5029) [2022-11-20 10:50:20,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48234 states to 48234 states and 78078 transitions. [2022-11-20 10:50:20,663 INFO L78 Accepts]: Start accepts. Automaton has 48234 states and 78078 transitions. Word has length 179 [2022-11-20 10:50:20,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:20,663 INFO L495 AbstractCegarLoop]: Abstraction has 48234 states and 78078 transitions. [2022-11-20 10:50:20,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:50:20,664 INFO L276 IsEmpty]: Start isEmpty. Operand 48234 states and 78078 transitions. [2022-11-20 10:50:20,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-20 10:50:20,709 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:20,709 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:20,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 10:50:20,710 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:50:20,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:20,711 INFO L85 PathProgramCache]: Analyzing trace with hash -401983606, now seen corresponding path program 1 times [2022-11-20 10:50:20,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:20,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309101324] [2022-11-20 10:50:20,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:20,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:20,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:21,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:50:21,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:21,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 10:50:21,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:21,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:50:21,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:21,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-20 10:50:21,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:21,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-20 10:50:21,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:21,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:21,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:50:21,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309101324] [2022-11-20 10:50:21,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309101324] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:21,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:21,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:50:21,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666071255] [2022-11-20 10:50:21,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:21,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:50:21,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:50:21,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:50:21,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:50:21,232 INFO L87 Difference]: Start difference. First operand 48234 states and 78078 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:50:51,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:51,316 INFO L93 Difference]: Finished difference Result 169904 states and 276951 transitions. [2022-11-20 10:50:51,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 10:50:51,317 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-20 10:50:51,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:51,958 INFO L225 Difference]: With dead ends: 169904 [2022-11-20 10:50:51,958 INFO L226 Difference]: Without dead ends: 123811 [2022-11-20 10:50:52,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 10:50:52,211 INFO L413 NwaCegarLoop]: 4317 mSDtfsCounter, 5649 mSDsluCounter, 17090 mSDsCounter, 0 mSdLazyCounter, 3109 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5668 SdHoareTripleChecker+Valid, 21407 SdHoareTripleChecker+Invalid, 3216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 3109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:52,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5668 Valid, 21407 Invalid, 3216 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [107 Valid, 3109 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-20 10:50:52,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123811 states.