./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.05.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_293366ab-df1a-413d-b09f-3a98534ce149/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_293366ab-df1a-413d-b09f-3a98534ce149/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_293366ab-df1a-413d-b09f-3a98534ce149/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_293366ab-df1a-413d-b09f-3a98534ce149/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.05.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_293366ab-df1a-413d-b09f-3a98534ce149/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_293366ab-df1a-413d-b09f-3a98534ce149/bin/uautomizer-Dbtcem3rbc --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 7ee209640ee994f311a04b9c2d813fadfd34b19e8b71a748e88ebcbbe5883af1 --- 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-5e519f3 [2022-11-02 21:02:56,885 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:02:56,887 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:02:56,929 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:02:56,930 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:02:56,933 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:02:56,936 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:02:56,940 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:02:56,942 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:02:56,948 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:02:56,949 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:02:56,951 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:02:56,951 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:02:56,954 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:02:56,956 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:02:56,958 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:02:56,959 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:02:56,960 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:02:56,962 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:02:56,971 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:02:56,972 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:02:56,973 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:02:56,976 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:02:56,977 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:02:56,985 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:02:56,986 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:02:56,986 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:02:56,988 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:02:56,988 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:02:56,989 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:02:56,990 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:02:56,991 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:02:56,993 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:02:56,994 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:02:56,996 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:02:56,996 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:02:56,997 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:02:56,997 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:02:56,997 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:02:56,998 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:02:56,999 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:02:57,000 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_293366ab-df1a-413d-b09f-3a98534ce149/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 21:02:57,034 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:02:57,034 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:02:57,034 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:02:57,034 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:02:57,035 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:02:57,035 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:02:57,036 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:02:57,036 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:02:57,036 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:02:57,037 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:02:57,037 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:02:57,037 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:02:57,037 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:02:57,038 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:02:57,038 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:02:57,038 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:02:57,038 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:02:57,038 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:02:57,039 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:02:57,039 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:02:57,039 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:02:57,039 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:02:57,039 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:02:57,040 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:02:57,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:02:57,040 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:02:57,040 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:02:57,041 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:02:57,041 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:02:57,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:02:57,041 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:02:57,041 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:02:57,042 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:02:57,042 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_293366ab-df1a-413d-b09f-3a98534ce149/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_293366ab-df1a-413d-b09f-3a98534ce149/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7ee209640ee994f311a04b9c2d813fadfd34b19e8b71a748e88ebcbbe5883af1 [2022-11-02 21:02:57,347 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:02:57,370 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:02:57,373 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:02:57,374 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:02:57,375 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:02:57,376 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_293366ab-df1a-413d-b09f-3a98534ce149/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.05.cil-2.c [2022-11-02 21:02:57,449 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_293366ab-df1a-413d-b09f-3a98534ce149/bin/uautomizer-Dbtcem3rbc/data/1eefa9cc0/869a7c6a028f4836914a49fe9166a73a/FLAG0bf69a2e4 [2022-11-02 21:02:58,452 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:02:58,453 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_293366ab-df1a-413d-b09f-3a98534ce149/sv-benchmarks/c/combinations/Problem05_label43+token_ring.05.cil-2.c [2022-11-02 21:02:58,513 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_293366ab-df1a-413d-b09f-3a98534ce149/bin/uautomizer-Dbtcem3rbc/data/1eefa9cc0/869a7c6a028f4836914a49fe9166a73a/FLAG0bf69a2e4 [2022-11-02 21:02:58,786 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_293366ab-df1a-413d-b09f-3a98534ce149/bin/uautomizer-Dbtcem3rbc/data/1eefa9cc0/869a7c6a028f4836914a49fe9166a73a [2022-11-02 21:02:58,788 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:02:58,789 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:02:58,790 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:02:58,790 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:02:58,795 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:02:58,795 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:02:58" (1/1) ... [2022-11-02 21:02:58,797 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34df7ddd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:02:58, skipping insertion in model container [2022-11-02 21:02:58,797 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:02:58" (1/1) ... [2022-11-02 21:02:58,807 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:02:59,055 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:03:01,492 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_293366ab-df1a-413d-b09f-3a98534ce149/sv-benchmarks/c/combinations/Problem05_label43+token_ring.05.cil-2.c[381679,381692] [2022-11-02 21:03:01,517 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_293366ab-df1a-413d-b09f-3a98534ce149/sv-benchmarks/c/combinations/Problem05_label43+token_ring.05.cil-2.c[383339,383352] [2022-11-02 21:03:01,743 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:03:01,755 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:03:03,034 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_293366ab-df1a-413d-b09f-3a98534ce149/sv-benchmarks/c/combinations/Problem05_label43+token_ring.05.cil-2.c[381679,381692] [2022-11-02 21:03:03,039 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_293366ab-df1a-413d-b09f-3a98534ce149/sv-benchmarks/c/combinations/Problem05_label43+token_ring.05.cil-2.c[383339,383352] [2022-11-02 21:03:03,073 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:03:03,134 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:03:03,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:03 WrapperNode [2022-11-02 21:03:03,135 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:03:03,136 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:03:03,136 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:03:03,136 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:03:03,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:03" (1/1) ... [2022-11-02 21:03:03,225 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:03" (1/1) ... [2022-11-02 21:03:03,605 INFO L138 Inliner]: procedures = 54, calls = 57, calls flagged for inlining = 31, calls inlined = 31, statements flattened = 12798 [2022-11-02 21:03:03,606 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:03:03,607 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:03:03,607 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:03:03,607 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:03:03,616 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:03" (1/1) ... [2022-11-02 21:03:03,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:03" (1/1) ... [2022-11-02 21:03:03,670 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:03" (1/1) ... [2022-11-02 21:03:03,671 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:03" (1/1) ... [2022-11-02 21:03:03,924 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:03" (1/1) ... [2022-11-02 21:03:03,975 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:03" (1/1) ... [2022-11-02 21:03:04,003 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:03" (1/1) ... [2022-11-02 21:03:04,025 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:03" (1/1) ... [2022-11-02 21:03:04,169 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:03:04,171 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:03:04,171 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:03:04,171 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:03:04,174 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:03" (1/1) ... [2022-11-02 21:03:04,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:03:04,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_293366ab-df1a-413d-b09f-3a98534ce149/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:03:04,208 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_293366ab-df1a-413d-b09f-3a98534ce149/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:03:04,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_293366ab-df1a-413d-b09f-3a98534ce149/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:03:04,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:03:04,340 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-02 21:03:04,340 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-02 21:03:04,340 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-02 21:03:04,341 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-02 21:03:04,341 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-02 21:03:04,341 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-02 21:03:04,341 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-11-02 21:03:04,341 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-11-02 21:03:04,341 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-02 21:03:04,342 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-02 21:03:04,342 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-02 21:03:04,342 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-02 21:03:04,342 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-02 21:03:04,342 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-02 21:03:04,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 21:03:04,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:03:04,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:03:04,572 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:03:04,574 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:03:13,600 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:03:13,626 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:03:13,627 INFO L300 CfgBuilder]: Removed 9 assume(true) statements. [2022-11-02 21:03:13,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:03:13 BoogieIcfgContainer [2022-11-02 21:03:13,633 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:03:13,637 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:03:13,637 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:03:13,640 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:03:13,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:02:58" (1/3) ... [2022-11-02 21:03:13,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1327a1d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:03:13, skipping insertion in model container [2022-11-02 21:03:13,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:03" (2/3) ... [2022-11-02 21:03:13,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1327a1d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:03:13, skipping insertion in model container [2022-11-02 21:03:13,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:03:13" (3/3) ... [2022-11-02 21:03:13,643 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.05.cil-2.c [2022-11-02 21:03:13,661 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:03:13,661 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-02 21:03:13,768 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:03:13,784 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;@79f09133, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:03:13,785 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-02 21:03:13,796 INFO L276 IsEmpty]: Start isEmpty. Operand has 2398 states, 2367 states have (on average 1.85297845373891) internal successors, (4386), 2372 states have internal predecessors, (4386), 21 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2022-11-02 21:03:13,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-02 21:03:13,823 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:13,824 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] [2022-11-02 21:03:13,825 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:13,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:13,831 INFO L85 PathProgramCache]: Analyzing trace with hash -645844934, now seen corresponding path program 1 times [2022-11-02 21:03:13,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:13,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579193467] [2022-11-02 21:03:13,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:13,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:13,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:14,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:03:14,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:14,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 21:03:14,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:14,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 21:03:14,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:14,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 21:03:14,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:14,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 21:03:14,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:14,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:14,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:14,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579193467] [2022-11-02 21:03:14,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579193467] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:14,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:14,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:03:14,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494975025] [2022-11-02 21:03:14,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:14,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:03:14,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:14,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:03:14,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:03:14,320 INFO L87 Difference]: Start difference. First operand has 2398 states, 2367 states have (on average 1.85297845373891) internal successors, (4386), 2372 states have internal predecessors, (4386), 21 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 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) [2022-11-02 21:03:15,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:15,493 INFO L93 Difference]: Finished difference Result 4852 states and 8953 transitions. [2022-11-02 21:03:15,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:03:15,496 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 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 102 [2022-11-02 21:03:15,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:15,517 INFO L225 Difference]: With dead ends: 4852 [2022-11-02 21:03:15,517 INFO L226 Difference]: Without dead ends: 2395 [2022-11-02 21:03:15,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:03:15,528 INFO L413 NwaCegarLoop]: 4373 mSDtfsCounter, 521 mSDsluCounter, 12301 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 16674 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:15,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [538 Valid, 16674 Invalid, 402 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 21:03:15,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2395 states. [2022-11-02 21:03:15,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2395 to 2330. [2022-11-02 21:03:15,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2330 states, 2301 states have (on average 1.841373315949587) internal successors, (4237), 2304 states have internal predecessors, (4237), 21 states have call successors, (21), 7 states have call predecessors, (21), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-11-02 21:03:15,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2330 states to 2330 states and 4277 transitions. [2022-11-02 21:03:15,668 INFO L78 Accepts]: Start accepts. Automaton has 2330 states and 4277 transitions. Word has length 102 [2022-11-02 21:03:15,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:15,670 INFO L495 AbstractCegarLoop]: Abstraction has 2330 states and 4277 transitions. [2022-11-02 21:03:15,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 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) [2022-11-02 21:03:15,671 INFO L276 IsEmpty]: Start isEmpty. Operand 2330 states and 4277 transitions. [2022-11-02 21:03:15,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-02 21:03:15,679 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:15,679 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] [2022-11-02 21:03:15,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:03:15,680 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:15,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:15,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1294737080, now seen corresponding path program 1 times [2022-11-02 21:03:15,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:15,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348222033] [2022-11-02 21:03:15,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:15,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:15,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:15,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:03:15,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:15,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 21:03:15,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:15,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 21:03:15,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:15,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 21:03:15,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:16,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 21:03:16,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:16,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:16,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:16,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348222033] [2022-11-02 21:03:16,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348222033] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:16,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:16,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:03:16,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118275095] [2022-11-02 21:03:16,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:16,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:03:16,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:16,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:03:16,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:03:16,012 INFO L87 Difference]: Start difference. First operand 2330 states and 4277 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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) [2022-11-02 21:03:17,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:17,707 INFO L93 Difference]: Finished difference Result 2856 states and 5108 transitions. [2022-11-02 21:03:17,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 21:03:17,708 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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 102 [2022-11-02 21:03:17,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:17,725 INFO L225 Difference]: With dead ends: 2856 [2022-11-02 21:03:17,725 INFO L226 Difference]: Without dead ends: 2660 [2022-11-02 21:03:17,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:03:17,732 INFO L413 NwaCegarLoop]: 4328 mSDtfsCounter, 4721 mSDsluCounter, 12415 mSDsCounter, 0 mSdLazyCounter, 997 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4733 SdHoareTripleChecker+Valid, 16743 SdHoareTripleChecker+Invalid, 1093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:17,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4733 Valid, 16743 Invalid, 1093 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [96 Valid, 997 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-02 21:03:17,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2660 states. [2022-11-02 21:03:17,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2660 to 2529. [2022-11-02 21:03:17,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2529 states, 2479 states have (on average 1.8217022993142395) internal successors, (4516), 2483 states have internal predecessors, (4516), 35 states have call successors, (35), 13 states have call predecessors, (35), 13 states have return successors, (36), 33 states have call predecessors, (36), 33 states have call successors, (36) [2022-11-02 21:03:17,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2529 states to 2529 states and 4587 transitions. [2022-11-02 21:03:17,831 INFO L78 Accepts]: Start accepts. Automaton has 2529 states and 4587 transitions. Word has length 102 [2022-11-02 21:03:17,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:17,831 INFO L495 AbstractCegarLoop]: Abstraction has 2529 states and 4587 transitions. [2022-11-02 21:03:17,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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) [2022-11-02 21:03:17,832 INFO L276 IsEmpty]: Start isEmpty. Operand 2529 states and 4587 transitions. [2022-11-02 21:03:17,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-02 21:03:17,833 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:17,833 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] [2022-11-02 21:03:17,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 21:03:17,834 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:17,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:17,834 INFO L85 PathProgramCache]: Analyzing trace with hash -389078092, now seen corresponding path program 1 times [2022-11-02 21:03:17,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:17,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348087522] [2022-11-02 21:03:17,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:17,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:17,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:18,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:03:18,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:18,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 21:03:18,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:18,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 21:03:18,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:18,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 21:03:18,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:18,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 21:03:18,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:18,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:18,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:18,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348087522] [2022-11-02 21:03:18,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348087522] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:18,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:18,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:03:18,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215346708] [2022-11-02 21:03:18,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:18,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:03:18,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:18,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:03:18,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:03:18,164 INFO L87 Difference]: Start difference. First operand 2529 states and 4587 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-11-02 21:03:20,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:20,448 INFO L93 Difference]: Finished difference Result 3324 states and 5839 transitions. [2022-11-02 21:03:20,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:03:20,449 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2022-11-02 21:03:20,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:20,464 INFO L225 Difference]: With dead ends: 3324 [2022-11-02 21:03:20,464 INFO L226 Difference]: Without dead ends: 2929 [2022-11-02 21:03:20,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:03:20,468 INFO L413 NwaCegarLoop]: 4485 mSDtfsCounter, 4725 mSDsluCounter, 16891 mSDsCounter, 0 mSdLazyCounter, 1551 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4737 SdHoareTripleChecker+Valid, 21376 SdHoareTripleChecker+Invalid, 1621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:20,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4737 Valid, 21376 Invalid, 1621 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [70 Valid, 1551 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-02 21:03:20,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2929 states. [2022-11-02 21:03:20,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2929 to 2715. [2022-11-02 21:03:20,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2715 states, 2644 states have (on average 1.8037065052950076) internal successors, (4769), 2649 states have internal predecessors, (4769), 49 states have call successors, (49), 19 states have call predecessors, (49), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2022-11-02 21:03:20,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2715 states to 2715 states and 4870 transitions. [2022-11-02 21:03:20,608 INFO L78 Accepts]: Start accepts. Automaton has 2715 states and 4870 transitions. Word has length 102 [2022-11-02 21:03:20,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:20,608 INFO L495 AbstractCegarLoop]: Abstraction has 2715 states and 4870 transitions. [2022-11-02 21:03:20,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-11-02 21:03:20,609 INFO L276 IsEmpty]: Start isEmpty. Operand 2715 states and 4870 transitions. [2022-11-02 21:03:20,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-02 21:03:20,611 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:20,611 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] [2022-11-02 21:03:20,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 21:03:20,612 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:20,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:20,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1487404726, now seen corresponding path program 1 times [2022-11-02 21:03:20,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:20,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016183630] [2022-11-02 21:03:20,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:20,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:20,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:20,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:03:20,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:20,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 21:03:20,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:20,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 21:03:20,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:20,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 21:03:20,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:20,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 21:03:20,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:20,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:20,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:20,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016183630] [2022-11-02 21:03:20,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016183630] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:20,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:20,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:03:20,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127802922] [2022-11-02 21:03:20,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:20,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:03:20,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:20,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:03:20,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:03:20,943 INFO L87 Difference]: Start difference. First operand 2715 states and 4870 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-11-02 21:03:23,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:23,194 INFO L93 Difference]: Finished difference Result 4012 states and 6910 transitions. [2022-11-02 21:03:23,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:03:23,195 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2022-11-02 21:03:23,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:23,211 INFO L225 Difference]: With dead ends: 4012 [2022-11-02 21:03:23,211 INFO L226 Difference]: Without dead ends: 3431 [2022-11-02 21:03:23,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:03:23,216 INFO L413 NwaCegarLoop]: 4473 mSDtfsCounter, 4719 mSDsluCounter, 16891 mSDsCounter, 0 mSdLazyCounter, 1540 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4731 SdHoareTripleChecker+Valid, 21364 SdHoareTripleChecker+Invalid, 1612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:23,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4731 Valid, 21364 Invalid, 1612 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [72 Valid, 1540 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-02 21:03:23,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3431 states. [2022-11-02 21:03:23,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3431 to 3091. [2022-11-02 21:03:23,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3091 states, 2978 states have (on average 1.77367360644728) internal successors, (5282), 2985 states have internal predecessors, (5282), 77 states have call successors, (77), 31 states have call predecessors, (77), 34 states have return successors, (88), 78 states have call predecessors, (88), 75 states have call successors, (88) [2022-11-02 21:03:23,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3091 states to 3091 states and 5447 transitions. [2022-11-02 21:03:23,399 INFO L78 Accepts]: Start accepts. Automaton has 3091 states and 5447 transitions. Word has length 102 [2022-11-02 21:03:23,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:23,400 INFO L495 AbstractCegarLoop]: Abstraction has 3091 states and 5447 transitions. [2022-11-02 21:03:23,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-11-02 21:03:23,400 INFO L276 IsEmpty]: Start isEmpty. Operand 3091 states and 5447 transitions. [2022-11-02 21:03:23,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-02 21:03:23,403 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:23,403 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] [2022-11-02 21:03:23,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 21:03:23,404 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:23,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:23,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1482706376, now seen corresponding path program 1 times [2022-11-02 21:03:23,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:23,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760353475] [2022-11-02 21:03:23,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:23,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:23,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:23,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:03:23,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:23,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 21:03:23,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:23,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 21:03:23,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:23,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 21:03:23,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:23,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 21:03:23,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:23,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:23,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:23,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760353475] [2022-11-02 21:03:23,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760353475] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:23,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:23,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:03:23,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368715395] [2022-11-02 21:03:23,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:23,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:03:23,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:23,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:03:23,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:03:23,642 INFO L87 Difference]: Start difference. First operand 3091 states and 5447 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-11-02 21:03:25,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:25,861 INFO L93 Difference]: Finished difference Result 5346 states and 8979 transitions. [2022-11-02 21:03:25,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:03:25,862 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2022-11-02 21:03:25,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:25,879 INFO L225 Difference]: With dead ends: 5346 [2022-11-02 21:03:25,879 INFO L226 Difference]: Without dead ends: 4389 [2022-11-02 21:03:25,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:03:25,888 INFO L413 NwaCegarLoop]: 4468 mSDtfsCounter, 4718 mSDsluCounter, 16891 mSDsCounter, 0 mSdLazyCounter, 1532 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4730 SdHoareTripleChecker+Valid, 21359 SdHoareTripleChecker+Invalid, 1604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:25,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4730 Valid, 21359 Invalid, 1604 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [72 Valid, 1532 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-02 21:03:25,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4389 states. [2022-11-02 21:03:26,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4389 to 3844. [2022-11-02 21:03:26,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3844 states, 3647 states have (on average 1.7296408006580752) internal successors, (6308), 3658 states have internal predecessors, (6308), 133 states have call successors, (133), 55 states have call predecessors, (133), 62 states have return successors, (166), 138 states have call predecessors, (166), 131 states have call successors, (166) [2022-11-02 21:03:26,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3844 states to 3844 states and 6607 transitions. [2022-11-02 21:03:26,105 INFO L78 Accepts]: Start accepts. Automaton has 3844 states and 6607 transitions. Word has length 102 [2022-11-02 21:03:26,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:26,105 INFO L495 AbstractCegarLoop]: Abstraction has 3844 states and 6607 transitions. [2022-11-02 21:03:26,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-11-02 21:03:26,106 INFO L276 IsEmpty]: Start isEmpty. Operand 3844 states and 6607 transitions. [2022-11-02 21:03:26,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-02 21:03:26,108 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:26,108 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] [2022-11-02 21:03:26,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 21:03:26,109 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:26,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:26,110 INFO L85 PathProgramCache]: Analyzing trace with hash 84051574, now seen corresponding path program 1 times [2022-11-02 21:03:26,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:26,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945052462] [2022-11-02 21:03:26,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:26,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:26,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:26,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:03:26,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:26,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 21:03:26,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:26,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 21:03:26,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:26,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 21:03:26,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:26,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 21:03:26,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:26,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:26,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:26,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945052462] [2022-11-02 21:03:26,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945052462] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:26,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:26,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:03:26,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37187292] [2022-11-02 21:03:26,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:26,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:03:26,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:26,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:03:26,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:03:26,295 INFO L87 Difference]: Start difference. First operand 3844 states and 6607 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-11-02 21:03:28,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:28,489 INFO L93 Difference]: Finished difference Result 8013 states and 13133 transitions. [2022-11-02 21:03:28,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:03:28,490 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2022-11-02 21:03:28,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:28,517 INFO L225 Difference]: With dead ends: 8013 [2022-11-02 21:03:28,517 INFO L226 Difference]: Without dead ends: 6303 [2022-11-02 21:03:28,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:03:28,525 INFO L413 NwaCegarLoop]: 4463 mSDtfsCounter, 4717 mSDsluCounter, 16891 mSDsCounter, 0 mSdLazyCounter, 1524 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4729 SdHoareTripleChecker+Valid, 21354 SdHoareTripleChecker+Invalid, 1596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:28,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4729 Valid, 21354 Invalid, 1596 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [72 Valid, 1524 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-02 21:03:28,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6303 states. [2022-11-02 21:03:28,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6303 to 5357. [2022-11-02 21:03:28,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5357 states, 4992 states have (on average 1.6766826923076923) internal successors, (8370), 5011 states have internal predecessors, (8370), 245 states have call successors, (245), 103 states have call predecessors, (245), 118 states have return successors, (340), 258 states have call predecessors, (340), 243 states have call successors, (340) [2022-11-02 21:03:28,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5357 states to 5357 states and 8955 transitions. [2022-11-02 21:03:28,870 INFO L78 Accepts]: Start accepts. Automaton has 5357 states and 8955 transitions. Word has length 102 [2022-11-02 21:03:28,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:28,872 INFO L495 AbstractCegarLoop]: Abstraction has 5357 states and 8955 transitions. [2022-11-02 21:03:28,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-11-02 21:03:28,873 INFO L276 IsEmpty]: Start isEmpty. Operand 5357 states and 8955 transitions. [2022-11-02 21:03:28,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-02 21:03:28,879 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:28,879 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] [2022-11-02 21:03:28,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 21:03:28,880 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:28,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:28,881 INFO L85 PathProgramCache]: Analyzing trace with hash -973786504, now seen corresponding path program 1 times [2022-11-02 21:03:28,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:28,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426238740] [2022-11-02 21:03:28,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:28,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:28,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:28,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:03:28,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:29,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 21:03:29,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:29,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 21:03:29,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:29,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 21:03:29,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:29,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 21:03:29,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:29,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:29,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:29,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426238740] [2022-11-02 21:03:29,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426238740] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:29,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:29,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:03:29,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791515817] [2022-11-02 21:03:29,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:29,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:03:29,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:29,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:03:29,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:03:29,070 INFO L87 Difference]: Start difference. First operand 5357 states and 8955 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-11-02 21:03:31,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:31,781 INFO L93 Difference]: Finished difference Result 14612 states and 23393 transitions. [2022-11-02 21:03:31,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 21:03:31,781 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2022-11-02 21:03:31,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:31,832 INFO L225 Difference]: With dead ends: 14612 [2022-11-02 21:03:31,832 INFO L226 Difference]: Without dead ends: 11389 [2022-11-02 21:03:31,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-02 21:03:31,847 INFO L413 NwaCegarLoop]: 4331 mSDtfsCounter, 4979 mSDsluCounter, 16535 mSDsCounter, 0 mSdLazyCounter, 1351 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4997 SdHoareTripleChecker+Valid, 20866 SdHoareTripleChecker+Invalid, 1452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:31,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4997 Valid, 20866 Invalid, 1452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1351 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-02 21:03:31,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11389 states. [2022-11-02 21:03:32,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11389 to 8350. [2022-11-02 21:03:32,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8350 states, 7665 states have (on average 1.6287018917155904) internal successors, (12484), 7700 states have internal predecessors, (12484), 453 states have call successors, (453), 199 states have call predecessors, (453), 230 states have return successors, (726), 482 states have call predecessors, (726), 451 states have call successors, (726) [2022-11-02 21:03:32,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8350 states to 8350 states and 13663 transitions. [2022-11-02 21:03:32,714 INFO L78 Accepts]: Start accepts. Automaton has 8350 states and 13663 transitions. Word has length 102 [2022-11-02 21:03:32,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:32,714 INFO L495 AbstractCegarLoop]: Abstraction has 8350 states and 13663 transitions. [2022-11-02 21:03:32,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-11-02 21:03:32,715 INFO L276 IsEmpty]: Start isEmpty. Operand 8350 states and 13663 transitions. [2022-11-02 21:03:32,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-02 21:03:32,721 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:32,721 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] [2022-11-02 21:03:32,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 21:03:32,726 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:32,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:32,726 INFO L85 PathProgramCache]: Analyzing trace with hash -2116288970, now seen corresponding path program 1 times [2022-11-02 21:03:32,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:32,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101805340] [2022-11-02 21:03:32,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:32,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:32,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:32,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:03:32,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:32,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 21:03:32,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:32,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 21:03:32,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:32,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 21:03:32,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:32,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 21:03:32,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:32,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:32,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:32,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101805340] [2022-11-02 21:03:32,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101805340] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:32,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:32,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:03:32,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655575738] [2022-11-02 21:03:32,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:32,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:03:32,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:32,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:03:32,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:03:32,910 INFO L87 Difference]: Start difference. First operand 8350 states and 13663 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-11-02 21:03:36,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:36,713 INFO L93 Difference]: Finished difference Result 26019 states and 41415 transitions. [2022-11-02 21:03:36,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 21:03:36,713 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2022-11-02 21:03:36,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:36,793 INFO L225 Difference]: With dead ends: 26019 [2022-11-02 21:03:36,794 INFO L226 Difference]: Without dead ends: 19803 [2022-11-02 21:03:36,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-02 21:03:36,823 INFO L413 NwaCegarLoop]: 4526 mSDtfsCounter, 4757 mSDsluCounter, 16880 mSDsCounter, 0 mSdLazyCounter, 1734 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4768 SdHoareTripleChecker+Valid, 21406 SdHoareTripleChecker+Invalid, 1808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:36,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4768 Valid, 21406 Invalid, 1808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1734 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-02 21:03:36,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19803 states. [2022-11-02 21:03:38,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19803 to 13999. [2022-11-02 21:03:38,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13999 states, 12690 states have (on average 1.5878644602048857) internal successors, (20150), 12757 states have internal predecessors, (20150), 853 states have call successors, (853), 391 states have call predecessors, (853), 454 states have return successors, (1644), 914 states have call predecessors, (1644), 851 states have call successors, (1644) [2022-11-02 21:03:38,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13999 states to 13999 states and 22647 transitions. [2022-11-02 21:03:38,112 INFO L78 Accepts]: Start accepts. Automaton has 13999 states and 22647 transitions. Word has length 102 [2022-11-02 21:03:38,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:38,113 INFO L495 AbstractCegarLoop]: Abstraction has 13999 states and 22647 transitions. [2022-11-02 21:03:38,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-11-02 21:03:38,113 INFO L276 IsEmpty]: Start isEmpty. Operand 13999 states and 22647 transitions. [2022-11-02 21:03:38,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-02 21:03:38,123 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:38,123 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] [2022-11-02 21:03:38,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 21:03:38,123 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:38,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:38,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1876049224, now seen corresponding path program 1 times [2022-11-02 21:03:38,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:38,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006664592] [2022-11-02 21:03:38,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:38,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:38,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:38,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:03:38,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:38,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 21:03:38,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:38,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 21:03:38,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:38,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 21:03:38,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:38,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 21:03:38,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:38,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:38,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:38,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006664592] [2022-11-02 21:03:38,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006664592] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:38,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:38,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:03:38,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136398032] [2022-11-02 21:03:38,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:38,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:03:38,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:38,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:03:38,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:03:38,304 INFO L87 Difference]: Start difference. First operand 13999 states and 22647 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-11-02 21:03:42,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:42,745 INFO L93 Difference]: Finished difference Result 47282 states and 75405 transitions. [2022-11-02 21:03:42,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 21:03:42,747 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2022-11-02 21:03:42,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:42,887 INFO L225 Difference]: With dead ends: 47282 [2022-11-02 21:03:42,887 INFO L226 Difference]: Without dead ends: 35417 [2022-11-02 21:03:42,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-02 21:03:42,939 INFO L413 NwaCegarLoop]: 4446 mSDtfsCounter, 4849 mSDsluCounter, 16883 mSDsCounter, 0 mSdLazyCounter, 1493 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4867 SdHoareTripleChecker+Valid, 21329 SdHoareTripleChecker+Invalid, 1570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:42,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4867 Valid, 21329 Invalid, 1570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1493 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-02 21:03:42,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35417 states. [2022-11-02 21:03:45,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35417 to 25584. [2022-11-02 21:03:45,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25584 states, 23059 states have (on average 1.5650288390650071) internal successors, (36088), 23190 states have internal predecessors, (36088), 1621 states have call successors, (1621), 775 states have call predecessors, (1621), 902 states have return successors, (3934), 1746 states have call predecessors, (3934), 1619 states have call successors, (3934) [2022-11-02 21:03:45,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25584 states to 25584 states and 41643 transitions. [2022-11-02 21:03:45,467 INFO L78 Accepts]: Start accepts. Automaton has 25584 states and 41643 transitions. Word has length 102 [2022-11-02 21:03:45,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:45,467 INFO L495 AbstractCegarLoop]: Abstraction has 25584 states and 41643 transitions. [2022-11-02 21:03:45,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-11-02 21:03:45,467 INFO L276 IsEmpty]: Start isEmpty. Operand 25584 states and 41643 transitions. [2022-11-02 21:03:45,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-02 21:03:45,484 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:45,484 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] [2022-11-02 21:03:45,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 21:03:45,485 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:45,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:45,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1037015562, now seen corresponding path program 1 times [2022-11-02 21:03:45,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:45,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228242769] [2022-11-02 21:03:45,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:45,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:45,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:45,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:03:45,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:45,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 21:03:45,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:45,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 21:03:45,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:45,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 21:03:45,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:45,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 21:03:45,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:45,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:45,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:45,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228242769] [2022-11-02 21:03:45,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228242769] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:45,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:45,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:03:45,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218558736] [2022-11-02 21:03:45,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:45,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:03:45,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:45,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:03:45,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:03:45,643 INFO L87 Difference]: Start difference. First operand 25584 states and 41643 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-11-02 21:03:53,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:53,693 INFO L93 Difference]: Finished difference Result 89521 states and 145107 transitions. [2022-11-02 21:03:53,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 21:03:53,693 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2022-11-02 21:03:53,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:54,001 INFO L225 Difference]: With dead ends: 89521 [2022-11-02 21:03:54,001 INFO L226 Difference]: Without dead ends: 66071 [2022-11-02 21:03:54,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-02 21:03:54,086 INFO L413 NwaCegarLoop]: 4439 mSDtfsCounter, 4812 mSDsluCounter, 16883 mSDsCounter, 0 mSdLazyCounter, 1482 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4830 SdHoareTripleChecker+Valid, 21322 SdHoareTripleChecker+Invalid, 1562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:54,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4830 Valid, 21322 Invalid, 1562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1482 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-02 21:03:54,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66071 states. [2022-11-02 21:03:58,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66071 to 48689. [2022-11-02 21:03:58,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48689 states, 43796 states have (on average 1.553246871860444) internal successors, (68026), 44055 states have internal predecessors, (68026), 3093 states have call successors, (3093), 1543 states have call predecessors, (3093), 1798 states have return successors, (9908), 3346 states have call predecessors, (9908), 3091 states have call successors, (9908) [2022-11-02 21:03:59,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48689 states to 48689 states and 81027 transitions. [2022-11-02 21:03:59,285 INFO L78 Accepts]: Start accepts. Automaton has 48689 states and 81027 transitions. Word has length 102 [2022-11-02 21:03:59,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:59,285 INFO L495 AbstractCegarLoop]: Abstraction has 48689 states and 81027 transitions. [2022-11-02 21:03:59,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-11-02 21:03:59,286 INFO L276 IsEmpty]: Start isEmpty. Operand 48689 states and 81027 transitions. [2022-11-02 21:03:59,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-02 21:03:59,321 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:59,321 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] [2022-11-02 21:03:59,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 21:03:59,321 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:59,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:59,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1009949960, now seen corresponding path program 1 times [2022-11-02 21:03:59,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:59,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443468953] [2022-11-02 21:03:59,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:59,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:59,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:59,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:03:59,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:59,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 21:03:59,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:59,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 21:03:59,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:59,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 21:03:59,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:59,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 21:03:59,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:59,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:59,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:59,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443468953] [2022-11-02 21:03:59,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443468953] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:59,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:59,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:03:59,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995797552] [2022-11-02 21:03:59,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:59,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:03:59,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:59,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:03:59,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:03:59,509 INFO L87 Difference]: Start difference. First operand 48689 states and 81027 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-11-02 21:04:06,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:06,566 INFO L93 Difference]: Finished difference Result 107098 states and 182436 transitions. [2022-11-02 21:04:06,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:04:06,566 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2022-11-02 21:04:06,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:06,965 INFO L225 Difference]: With dead ends: 107098 [2022-11-02 21:04:06,966 INFO L226 Difference]: Without dead ends: 60543 [2022-11-02 21:04:07,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:04:07,094 INFO L413 NwaCegarLoop]: 4254 mSDtfsCounter, 4522 mSDsluCounter, 16349 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4535 SdHoareTripleChecker+Valid, 20603 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:07,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4535 Valid, 20603 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 21:04:07,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60543 states. [2022-11-02 21:04:11,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60543 to 48689. [2022-11-02 21:04:11,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48689 states, 43796 states have (on average 1.5473787560507808) internal successors, (67769), 44055 states have internal predecessors, (67769), 3093 states have call successors, (3093), 1543 states have call predecessors, (3093), 1798 states have return successors, (9908), 3346 states have call predecessors, (9908), 3091 states have call successors, (9908) [2022-11-02 21:04:11,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48689 states to 48689 states and 80770 transitions. [2022-11-02 21:04:11,987 INFO L78 Accepts]: Start accepts. Automaton has 48689 states and 80770 transitions. Word has length 102 [2022-11-02 21:04:11,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:11,987 INFO L495 AbstractCegarLoop]: Abstraction has 48689 states and 80770 transitions. [2022-11-02 21:04:11,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-11-02 21:04:11,987 INFO L276 IsEmpty]: Start isEmpty. Operand 48689 states and 80770 transitions. [2022-11-02 21:04:12,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-02 21:04:12,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:12,033 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] [2022-11-02 21:04:12,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 21:04:12,034 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:12,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:12,034 INFO L85 PathProgramCache]: Analyzing trace with hash 724154490, now seen corresponding path program 1 times [2022-11-02 21:04:12,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:12,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258318976] [2022-11-02 21:04:12,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:12,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:12,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:12,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:04:12,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:12,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 21:04:12,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:12,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 21:04:12,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:12,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 21:04:12,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:12,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 21:04:12,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:12,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:12,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:12,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258318976] [2022-11-02 21:04:12,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258318976] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:12,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:12,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:04:12,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429569512] [2022-11-02 21:04:12,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:12,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:04:12,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:12,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:04:12,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:04:12,152 INFO L87 Difference]: Start difference. First operand 48689 states and 80770 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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)