./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label48+token_ring.10.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88db5d-1c81-4654-8666-a27cd298a7c5/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88db5d-1c81-4654-8666-a27cd298a7c5/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_bb88db5d-1c81-4654-8666-a27cd298a7c5/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88db5d-1c81-4654-8666-a27cd298a7c5/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label48+token_ring.10.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88db5d-1c81-4654-8666-a27cd298a7c5/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_bb88db5d-1c81-4654-8666-a27cd298a7c5/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 a7e5f5a1db53b7a411af936e12a734750394ab6a9f7be60b4c793a1fb07a048c --- 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 21:03:32,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:03:32,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:03:32,176 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:03:32,176 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:03:32,180 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:03:32,183 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:03:32,186 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:03:32,189 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:03:32,194 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:03:32,196 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:03:32,198 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:03:32,199 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:03:32,202 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:03:32,204 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:03:32,206 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:03:32,207 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:03:32,208 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:03:32,210 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:03:32,219 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:03:32,221 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:03:32,222 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:03:32,226 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:03:32,227 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:03:32,235 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:03:32,235 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:03:32,235 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:03:32,238 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:03:32,238 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:03:32,239 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:03:32,239 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:03:32,240 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:03:32,243 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:03:32,244 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:03:32,246 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:03:32,246 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:03:32,247 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:03:32,247 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:03:32,247 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:03:32,248 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:03:32,249 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:03:32,250 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88db5d-1c81-4654-8666-a27cd298a7c5/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 21:03:32,294 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:03:32,294 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:03:32,295 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:03:32,295 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:03:32,296 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:03:32,296 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:03:32,297 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:03:32,297 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:03:32,297 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:03:32,298 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:03:32,299 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:03:32,299 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:03:32,299 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:03:32,299 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:03:32,299 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:03:32,300 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:03:32,300 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:03:32,300 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:03:32,300 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:03:32,300 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:03:32,300 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:03:32,301 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:03:32,301 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:03:32,301 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:03:32,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:03:32,301 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:03:32,302 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:03:32,302 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:03:32,302 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:03:32,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:03:32,302 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:03:32,302 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:03:32,303 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:03:32,303 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_bb88db5d-1c81-4654-8666-a27cd298a7c5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88db5d-1c81-4654-8666-a27cd298a7c5/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a7e5f5a1db53b7a411af936e12a734750394ab6a9f7be60b4c793a1fb07a048c [2022-11-02 21:03:32,622 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:03:32,651 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:03:32,654 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:03:32,656 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:03:32,657 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:03:32,658 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88db5d-1c81-4654-8666-a27cd298a7c5/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/combinations/Problem05_label48+token_ring.10.cil-2.c [2022-11-02 21:03:32,753 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88db5d-1c81-4654-8666-a27cd298a7c5/bin/uautomizer-Dbtcem3rbc/data/148818432/6890d7f26f2b4c0ab8f795c8edc16e05/FLAG915a8afd4 [2022-11-02 21:03:34,055 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:03:34,056 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88db5d-1c81-4654-8666-a27cd298a7c5/sv-benchmarks/c/combinations/Problem05_label48+token_ring.10.cil-2.c [2022-11-02 21:03:34,108 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88db5d-1c81-4654-8666-a27cd298a7c5/bin/uautomizer-Dbtcem3rbc/data/148818432/6890d7f26f2b4c0ab8f795c8edc16e05/FLAG915a8afd4 [2022-11-02 21:03:34,222 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88db5d-1c81-4654-8666-a27cd298a7c5/bin/uautomizer-Dbtcem3rbc/data/148818432/6890d7f26f2b4c0ab8f795c8edc16e05 [2022-11-02 21:03:34,226 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:03:34,229 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:03:34,232 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:03:34,233 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:03:34,237 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:03:34,238 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:03:34" (1/1) ... [2022-11-02 21:03:34,239 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4595f472 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:34, skipping insertion in model container [2022-11-02 21:03:34,240 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:03:34" (1/1) ... [2022-11-02 21:03:34,249 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:03:34,515 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:03:37,206 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_bb88db5d-1c81-4654-8666-a27cd298a7c5/sv-benchmarks/c/combinations/Problem05_label48+token_ring.10.cil-2.c[375709,375722] [2022-11-02 21:03:37,248 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_bb88db5d-1c81-4654-8666-a27cd298a7c5/sv-benchmarks/c/combinations/Problem05_label48+token_ring.10.cil-2.c[383339,383352] [2022-11-02 21:03:37,640 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:03:37,656 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:03:39,020 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_bb88db5d-1c81-4654-8666-a27cd298a7c5/sv-benchmarks/c/combinations/Problem05_label48+token_ring.10.cil-2.c[375709,375722] [2022-11-02 21:03:39,032 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_bb88db5d-1c81-4654-8666-a27cd298a7c5/sv-benchmarks/c/combinations/Problem05_label48+token_ring.10.cil-2.c[383339,383352] [2022-11-02 21:03:39,079 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:03:39,149 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:03:39,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:39 WrapperNode [2022-11-02 21:03:39,150 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:03:39,151 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:03:39,151 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:03:39,151 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:03:39,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:39" (1/1) ... [2022-11-02 21:03:39,280 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:39" (1/1) ... [2022-11-02 21:03:39,679 INFO L138 Inliner]: procedures = 64, calls = 71, calls flagged for inlining = 42, calls inlined = 42, statements flattened = 13083 [2022-11-02 21:03:39,679 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:03:39,680 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:03:39,681 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:03:39,681 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:03:39,692 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:39" (1/1) ... [2022-11-02 21:03:39,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:39" (1/1) ... [2022-11-02 21:03:39,750 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:39" (1/1) ... [2022-11-02 21:03:39,751 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:39" (1/1) ... [2022-11-02 21:03:40,000 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:39" (1/1) ... [2022-11-02 21:03:40,060 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:39" (1/1) ... [2022-11-02 21:03:40,093 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:39" (1/1) ... [2022-11-02 21:03:40,118 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:39" (1/1) ... [2022-11-02 21:03:40,292 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:03:40,293 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:03:40,293 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:03:40,293 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:03:40,296 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:39" (1/1) ... [2022-11-02 21:03:40,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:03:40,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88db5d-1c81-4654-8666-a27cd298a7c5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:03:40,393 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88db5d-1c81-4654-8666-a27cd298a7c5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:03:40,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb88db5d-1c81-4654-8666-a27cd298a7c5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:03:40,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:03:40,530 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-02 21:03:40,530 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-02 21:03:40,530 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-02 21:03:40,530 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-02 21:03:40,531 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-02 21:03:40,531 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-02 21:03:40,531 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-02 21:03:40,531 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-02 21:03:40,531 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-02 21:03:40,531 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-02 21:03:40,531 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-02 21:03:40,532 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-02 21:03:40,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 21:03:40,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:03:40,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:03:40,776 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:03:40,793 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:03:50,641 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:03:50,672 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:03:50,672 INFO L300 CfgBuilder]: Removed 14 assume(true) statements. [2022-11-02 21:03:50,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:03:50 BoogieIcfgContainer [2022-11-02 21:03:50,680 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:03:50,684 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:03:50,684 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:03:50,687 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:03:50,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:03:34" (1/3) ... [2022-11-02 21:03:50,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60b2deca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:03:50, skipping insertion in model container [2022-11-02 21:03:50,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:39" (2/3) ... [2022-11-02 21:03:50,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60b2deca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:03:50, skipping insertion in model container [2022-11-02 21:03:50,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:03:50" (3/3) ... [2022-11-02 21:03:50,691 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label48+token_ring.10.cil-2.c [2022-11-02 21:03:50,711 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:03:50,712 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-02 21:03:50,836 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:03:50,843 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;@3157117e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:03:50,843 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-02 21:03:50,859 INFO L276 IsEmpty]: Start isEmpty. Operand has 2515 states, 2482 states have (on average 1.8456889605157132) internal successors, (4581), 2485 states have internal predecessors, (4581), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-11-02 21:03:50,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-02 21:03:50,881 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:50,882 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:50,883 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:50,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:50,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1879597445, now seen corresponding path program 1 times [2022-11-02 21:03:50,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:50,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669541346] [2022-11-02 21:03:50,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:50,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:51,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:51,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:03:51,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:51,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-02 21:03:51,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:51,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 21:03:51,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:51,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-02 21:03:51,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:51,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-02 21:03:51,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:51,754 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 21:03:51,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:51,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669541346] [2022-11-02 21:03:51,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669541346] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:51,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:51,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:03:51,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872707921] [2022-11-02 21:03:51,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:51,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:03:51,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:51,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:03:51,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:03:51,807 INFO L87 Difference]: Start difference. First operand has 2515 states, 2482 states have (on average 1.8456889605157132) internal successors, (4581), 2485 states have internal predecessors, (4581), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:03:54,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:54,130 INFO L93 Difference]: Finished difference Result 5140 states and 9446 transitions. [2022-11-02 21:03:54,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:03:54,133 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2022-11-02 21:03:54,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:54,164 INFO L225 Difference]: With dead ends: 5140 [2022-11-02 21:03:54,165 INFO L226 Difference]: Without dead ends: 2568 [2022-11-02 21:03:54,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:03:54,184 INFO L413 NwaCegarLoop]: 4589 mSDtfsCounter, 882 mSDsluCounter, 12413 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 17002 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:54,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [904 Valid, 17002 Invalid, 674 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [58 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-02 21:03:54,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2568 states. [2022-11-02 21:03:54,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2568 to 2448. [2022-11-02 21:03:54,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2448 states, 2416 states have (on average 1.830298013245033) internal successors, (4422), 2418 states have internal predecessors, (4422), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-11-02 21:03:54,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2448 states to 2448 states and 4470 transitions. [2022-11-02 21:03:54,384 INFO L78 Accepts]: Start accepts. Automaton has 2448 states and 4470 transitions. Word has length 156 [2022-11-02 21:03:54,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:54,385 INFO L495 AbstractCegarLoop]: Abstraction has 2448 states and 4470 transitions. [2022-11-02 21:03:54,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:03:54,386 INFO L276 IsEmpty]: Start isEmpty. Operand 2448 states and 4470 transitions. [2022-11-02 21:03:54,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-02 21:03:54,403 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:54,407 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:54,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:03:54,407 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:54,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:54,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1988815353, now seen corresponding path program 1 times [2022-11-02 21:03:54,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:54,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821525810] [2022-11-02 21:03:54,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:54,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:54,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:54,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:03:54,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:54,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-02 21:03:54,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:54,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 21:03:54,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:54,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-02 21:03:54,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:54,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-02 21:03:54,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:54,920 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 21:03:54,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:54,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821525810] [2022-11-02 21:03:54,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821525810] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:54,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:54,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:03:54,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654589913] [2022-11-02 21:03:54,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:54,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:03:54,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:54,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:03:54,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:03:54,925 INFO L87 Difference]: Start difference. First operand 2448 states and 4470 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:03:59,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:59,772 INFO L93 Difference]: Finished difference Result 3341 states and 5922 transitions. [2022-11-02 21:03:59,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:03:59,773 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2022-11-02 21:03:59,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:59,798 INFO L225 Difference]: With dead ends: 3341 [2022-11-02 21:03:59,798 INFO L226 Difference]: Without dead ends: 3032 [2022-11-02 21:03:59,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:03:59,805 INFO L413 NwaCegarLoop]: 4828 mSDtfsCounter, 5220 mSDsluCounter, 17450 mSDsCounter, 0 mSdLazyCounter, 2804 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5237 SdHoareTripleChecker+Valid, 22278 SdHoareTripleChecker+Invalid, 2881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 2804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:59,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5237 Valid, 22278 Invalid, 2881 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [77 Valid, 2804 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-02 21:03:59,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3032 states. [2022-11-02 21:04:00,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3032 to 2775. [2022-11-02 21:04:00,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2775 states, 2714 states have (on average 1.8043478260869565) internal successors, (4897), 2718 states have internal predecessors, (4897), 45 states have call successors, (45), 12 states have call predecessors, (45), 14 states have return successors, (52), 46 states have call predecessors, (52), 45 states have call successors, (52) [2022-11-02 21:04:00,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2775 states to 2775 states and 4994 transitions. [2022-11-02 21:04:00,059 INFO L78 Accepts]: Start accepts. Automaton has 2775 states and 4994 transitions. Word has length 156 [2022-11-02 21:04:00,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:00,062 INFO L495 AbstractCegarLoop]: Abstraction has 2775 states and 4994 transitions. [2022-11-02 21:04:00,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:04:00,063 INFO L276 IsEmpty]: Start isEmpty. Operand 2775 states and 4994 transitions. [2022-11-02 21:04:00,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-02 21:04:00,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:00,069 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:00,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 21:04:00,071 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:00,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:00,072 INFO L85 PathProgramCache]: Analyzing trace with hash 371374903, now seen corresponding path program 1 times [2022-11-02 21:04:00,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:00,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553809294] [2022-11-02 21:04:00,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:00,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:00,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:00,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:04:00,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:00,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-02 21:04:00,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:00,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 21:04:00,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:00,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-02 21:04:00,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:00,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-02 21:04:00,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:00,534 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 21:04:00,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:00,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553809294] [2022-11-02 21:04:00,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553809294] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:00,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:00,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:04:00,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552072366] [2022-11-02 21:04:00,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:00,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:04:00,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:00,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:04:00,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:04:00,541 INFO L87 Difference]: Start difference. First operand 2775 states and 4994 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:04:05,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:05,046 INFO L93 Difference]: Finished difference Result 4476 states and 7734 transitions. [2022-11-02 21:04:05,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:04:05,047 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2022-11-02 21:04:05,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:05,071 INFO L225 Difference]: With dead ends: 4476 [2022-11-02 21:04:05,072 INFO L226 Difference]: Without dead ends: 3842 [2022-11-02 21:04:05,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:04:05,076 INFO L413 NwaCegarLoop]: 4755 mSDtfsCounter, 5260 mSDsluCounter, 17375 mSDsCounter, 0 mSdLazyCounter, 2656 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5277 SdHoareTripleChecker+Valid, 22130 SdHoareTripleChecker+Invalid, 2740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:05,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5277 Valid, 22130 Invalid, 2740 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [84 Valid, 2656 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-02 21:04:05,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3842 states. [2022-11-02 21:04:05,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3842 to 3377. [2022-11-02 21:04:05,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3377 states, 3264 states have (on average 1.7634803921568627) internal successors, (5756), 3270 states have internal predecessors, (5756), 83 states have call successors, (83), 24 states have call predecessors, (83), 28 states have return successors, (100), 86 states have call predecessors, (100), 83 states have call successors, (100) [2022-11-02 21:04:05,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3377 states to 3377 states and 5939 transitions. [2022-11-02 21:04:05,278 INFO L78 Accepts]: Start accepts. Automaton has 3377 states and 5939 transitions. Word has length 156 [2022-11-02 21:04:05,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:05,278 INFO L495 AbstractCegarLoop]: Abstraction has 3377 states and 5939 transitions. [2022-11-02 21:04:05,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:04:05,279 INFO L276 IsEmpty]: Start isEmpty. Operand 3377 states and 5939 transitions. [2022-11-02 21:04:05,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-02 21:04:05,282 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:05,283 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:05,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 21:04:05,283 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:05,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:05,284 INFO L85 PathProgramCache]: Analyzing trace with hash 734841401, now seen corresponding path program 1 times [2022-11-02 21:04:05,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:05,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092014704] [2022-11-02 21:04:05,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:05,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:05,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:05,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:04:05,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:05,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-02 21:04:05,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:05,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 21:04:05,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:05,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-02 21:04:05,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:05,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-02 21:04:05,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:05,560 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 21:04:05,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:05,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092014704] [2022-11-02 21:04:05,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092014704] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:05,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:05,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:04:05,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349565167] [2022-11-02 21:04:05,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:05,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:04:05,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:05,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:04:05,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:04:05,564 INFO L87 Difference]: Start difference. First operand 3377 states and 5939 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:04:10,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:10,450 INFO L93 Difference]: Finished difference Result 6696 states and 11267 transitions. [2022-11-02 21:04:10,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:04:10,451 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2022-11-02 21:04:10,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:10,477 INFO L225 Difference]: With dead ends: 6696 [2022-11-02 21:04:10,477 INFO L226 Difference]: Without dead ends: 5460 [2022-11-02 21:04:10,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:04:10,484 INFO L413 NwaCegarLoop]: 4819 mSDtfsCounter, 5219 mSDsluCounter, 17450 mSDsCounter, 0 mSdLazyCounter, 2800 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5236 SdHoareTripleChecker+Valid, 22269 SdHoareTripleChecker+Invalid, 2880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:10,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5236 Valid, 22269 Invalid, 2880 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 2800 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-02 21:04:10,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5460 states. [2022-11-02 21:04:10,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5460 to 4583. [2022-11-02 21:04:10,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4583 states, 4366 states have (on average 1.712322491983509) internal successors, (7476), 4376 states have internal predecessors, (7476), 159 states have call successors, (159), 48 states have call predecessors, (159), 56 states have return successors, (202), 166 states have call predecessors, (202), 159 states have call successors, (202) [2022-11-02 21:04:10,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4583 states to 4583 states and 7837 transitions. [2022-11-02 21:04:10,824 INFO L78 Accepts]: Start accepts. Automaton has 4583 states and 7837 transitions. Word has length 156 [2022-11-02 21:04:10,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:10,825 INFO L495 AbstractCegarLoop]: Abstraction has 4583 states and 7837 transitions. [2022-11-02 21:04:10,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:04:10,833 INFO L276 IsEmpty]: Start isEmpty. Operand 4583 states and 7837 transitions. [2022-11-02 21:04:10,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-02 21:04:10,837 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:10,837 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:10,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 21:04:10,838 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:10,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:10,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1023660791, now seen corresponding path program 1 times [2022-11-02 21:04:10,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:10,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045668076] [2022-11-02 21:04:10,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:10,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:10,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:10,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:04:10,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:11,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-02 21:04:11,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:11,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 21:04:11,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:11,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-02 21:04:11,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:11,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-02 21:04:11,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:11,145 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 21:04:11,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:11,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045668076] [2022-11-02 21:04:11,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045668076] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:11,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:11,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:04:11,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857943890] [2022-11-02 21:04:11,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:11,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:04:11,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:11,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:04:11,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:04:11,150 INFO L87 Difference]: Start difference. First operand 4583 states and 7837 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:04:16,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:16,039 INFO L93 Difference]: Finished difference Result 11134 states and 18347 transitions. [2022-11-02 21:04:16,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:04:16,040 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2022-11-02 21:04:16,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:16,087 INFO L225 Difference]: With dead ends: 11134 [2022-11-02 21:04:16,087 INFO L226 Difference]: Without dead ends: 8692 [2022-11-02 21:04:16,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:04:16,101 INFO L413 NwaCegarLoop]: 4816 mSDtfsCounter, 5219 mSDsluCounter, 17450 mSDsCounter, 0 mSdLazyCounter, 2794 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5236 SdHoareTripleChecker+Valid, 22266 SdHoareTripleChecker+Invalid, 2874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:16,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5236 Valid, 22266 Invalid, 2874 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 2794 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-02 21:04:16,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8692 states. [2022-11-02 21:04:16,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8692 to 7001. [2022-11-02 21:04:16,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7001 states, 6576 states have (on average 1.6611922141119222) internal successors, (10924), 6594 states have internal predecessors, (10924), 311 states have call successors, (311), 96 states have call predecessors, (311), 112 states have return successors, (424), 326 states have call predecessors, (424), 311 states have call successors, (424) [2022-11-02 21:04:16,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7001 states to 7001 states and 11659 transitions. [2022-11-02 21:04:16,931 INFO L78 Accepts]: Start accepts. Automaton has 7001 states and 11659 transitions. Word has length 156 [2022-11-02 21:04:16,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:16,932 INFO L495 AbstractCegarLoop]: Abstraction has 7001 states and 11659 transitions. [2022-11-02 21:04:16,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:04:16,934 INFO L276 IsEmpty]: Start isEmpty. Operand 7001 states and 11659 transitions. [2022-11-02 21:04:16,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-02 21:04:16,941 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:16,941 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:16,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 21:04:16,942 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:16,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:16,944 INFO L85 PathProgramCache]: Analyzing trace with hash 478788217, now seen corresponding path program 1 times [2022-11-02 21:04:16,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:16,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097892514] [2022-11-02 21:04:16,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:16,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:16,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:17,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:04:17,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:17,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-02 21:04:17,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:17,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 21:04:17,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:17,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-02 21:04:17,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:17,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-02 21:04:17,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:17,313 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 21:04:17,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:17,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097892514] [2022-11-02 21:04:17,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097892514] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:17,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:17,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:04:17,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286161057] [2022-11-02 21:04:17,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:17,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:04:17,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:17,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:04:17,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:04:17,317 INFO L87 Difference]: Start difference. First operand 7001 states and 11659 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:04:22,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:22,654 INFO L93 Difference]: Finished difference Result 20008 states and 32563 transitions. [2022-11-02 21:04:22,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:04:22,655 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2022-11-02 21:04:22,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:22,723 INFO L225 Difference]: With dead ends: 20008 [2022-11-02 21:04:22,723 INFO L226 Difference]: Without dead ends: 15148 [2022-11-02 21:04:22,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:04:22,750 INFO L413 NwaCegarLoop]: 4813 mSDtfsCounter, 5219 mSDsluCounter, 17450 mSDsCounter, 0 mSdLazyCounter, 2788 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5236 SdHoareTripleChecker+Valid, 22263 SdHoareTripleChecker+Invalid, 2868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:22,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5236 Valid, 22263 Invalid, 2868 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 2788 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-02 21:04:22,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15148 states. [2022-11-02 21:04:23,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15148 to 11851. [2022-11-02 21:04:23,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11851 states, 11010 states have (on average 1.620345140781108) internal successors, (17840), 11044 states have internal predecessors, (17840), 615 states have call successors, (615), 192 states have call predecessors, (615), 224 states have return successors, (922), 646 states have call predecessors, (922), 615 states have call successors, (922) [2022-11-02 21:04:23,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11851 states to 11851 states and 19377 transitions. [2022-11-02 21:04:23,900 INFO L78 Accepts]: Start accepts. Automaton has 11851 states and 19377 transitions. Word has length 156 [2022-11-02 21:04:23,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:23,900 INFO L495 AbstractCegarLoop]: Abstraction has 11851 states and 19377 transitions. [2022-11-02 21:04:23,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:04:23,901 INFO L276 IsEmpty]: Start isEmpty. Operand 11851 states and 19377 transitions. [2022-11-02 21:04:23,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-02 21:04:23,908 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:23,909 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:23,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 21:04:23,909 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:23,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:23,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1153948343, now seen corresponding path program 1 times [2022-11-02 21:04:23,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:23,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853391891] [2022-11-02 21:04:23,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:23,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:23,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:24,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:04:24,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:24,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-02 21:04:24,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:24,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 21:04:24,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:24,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-02 21:04:24,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:24,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-02 21:04:24,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:24,160 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 21:04:24,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:24,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853391891] [2022-11-02 21:04:24,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853391891] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:24,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:24,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:04:24,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990266366] [2022-11-02 21:04:24,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:24,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:04:24,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:24,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:04:24,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:04:24,163 INFO L87 Difference]: Start difference. First operand 11851 states and 19377 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:04:30,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:30,850 INFO L93 Difference]: Finished difference Result 37754 states and 61183 transitions. [2022-11-02 21:04:30,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:04:30,851 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2022-11-02 21:04:30,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:30,972 INFO L225 Difference]: With dead ends: 37754 [2022-11-02 21:04:30,973 INFO L226 Difference]: Without dead ends: 28044 [2022-11-02 21:04:31,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:04:31,016 INFO L413 NwaCegarLoop]: 4810 mSDtfsCounter, 5219 mSDsluCounter, 17450 mSDsCounter, 0 mSdLazyCounter, 2782 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5236 SdHoareTripleChecker+Valid, 22260 SdHoareTripleChecker+Invalid, 2862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:31,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5236 Valid, 22260 Invalid, 2862 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 2782 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-02 21:04:31,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28044 states. [2022-11-02 21:04:33,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28044 to 21581. [2022-11-02 21:04:33,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21581 states, 19908 states have (on average 1.593128390596745) internal successors, (31716), 19974 states have internal predecessors, (31716), 1223 states have call successors, (1223), 384 states have call predecessors, (1223), 448 states have return successors, (2080), 1286 states have call predecessors, (2080), 1223 states have call successors, (2080) [2022-11-02 21:04:33,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21581 states to 21581 states and 35019 transitions. [2022-11-02 21:04:33,170 INFO L78 Accepts]: Start accepts. Automaton has 21581 states and 35019 transitions. Word has length 156 [2022-11-02 21:04:33,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:33,171 INFO L495 AbstractCegarLoop]: Abstraction has 21581 states and 35019 transitions. [2022-11-02 21:04:33,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:04:33,171 INFO L276 IsEmpty]: Start isEmpty. Operand 21581 states and 35019 transitions. [2022-11-02 21:04:33,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-02 21:04:33,186 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:33,186 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:33,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 21:04:33,186 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:33,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:33,187 INFO L85 PathProgramCache]: Analyzing trace with hash 205896377, now seen corresponding path program 1 times [2022-11-02 21:04:33,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:33,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712848315] [2022-11-02 21:04:33,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:33,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:33,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:33,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:04:33,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:33,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-02 21:04:33,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:33,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 21:04:33,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:33,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-02 21:04:33,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:33,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-02 21:04:33,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:33,426 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 21:04:33,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:33,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712848315] [2022-11-02 21:04:33,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712848315] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:33,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:33,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:04:33,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325936380] [2022-11-02 21:04:33,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:33,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:04:33,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:33,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:04:33,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:04:33,429 INFO L87 Difference]: Start difference. First operand 21581 states and 35019 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:04:38,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:38,893 INFO L93 Difference]: Finished difference Result 47941 states and 78380 transitions. [2022-11-02 21:04:38,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:04:38,894 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2022-11-02 21:04:38,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:39,028 INFO L225 Difference]: With dead ends: 47941 [2022-11-02 21:04:39,028 INFO L226 Difference]: Without dead ends: 28499 [2022-11-02 21:04:39,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:04:39,089 INFO L413 NwaCegarLoop]: 4496 mSDtfsCounter, 4916 mSDsluCounter, 16635 mSDsCounter, 0 mSdLazyCounter, 1260 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4934 SdHoareTripleChecker+Valid, 21131 SdHoareTripleChecker+Invalid, 1335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:39,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4934 Valid, 21131 Invalid, 1335 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [75 Valid, 1260 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-02 21:04:39,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28499 states. [2022-11-02 21:04:41,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28499 to 21581. [2022-11-02 21:04:41,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21581 states, 19908 states have (on average 1.5898633715089412) internal successors, (31651), 19974 states have internal predecessors, (31651), 1223 states have call successors, (1223), 384 states have call predecessors, (1223), 448 states have return successors, (2080), 1286 states have call predecessors, (2080), 1223 states have call successors, (2080) [2022-11-02 21:04:42,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21581 states to 21581 states and 34954 transitions. [2022-11-02 21:04:42,071 INFO L78 Accepts]: Start accepts. Automaton has 21581 states and 34954 transitions. Word has length 156 [2022-11-02 21:04:42,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:42,071 INFO L495 AbstractCegarLoop]: Abstraction has 21581 states and 34954 transitions. [2022-11-02 21:04:42,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:04:42,072 INFO L276 IsEmpty]: Start isEmpty. Operand 21581 states and 34954 transitions. [2022-11-02 21:04:42,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-02 21:04:42,106 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:42,106 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:42,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 21:04:42,107 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:42,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:42,109 INFO L85 PathProgramCache]: Analyzing trace with hash -378875273, now seen corresponding path program 1 times [2022-11-02 21:04:42,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:42,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537123957] [2022-11-02 21:04:42,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:42,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:42,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:42,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:04:42,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:42,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-02 21:04:42,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:42,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 21:04:42,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:42,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-02 21:04:42,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:42,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-02 21:04:42,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:42,499 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 21:04:42,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:42,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537123957] [2022-11-02 21:04:42,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537123957] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:42,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:42,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:04:42,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910560817] [2022-11-02 21:04:42,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:42,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:04:42,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:42,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:04:42,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:04:42,504 INFO L87 Difference]: Start difference. First operand 21581 states and 34954 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:04:54,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:54,649 INFO L93 Difference]: Finished difference Result 73117 states and 118447 transitions. [2022-11-02 21:04:54,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:04:54,650 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2022-11-02 21:04:54,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:54,946 INFO L225 Difference]: With dead ends: 73117 [2022-11-02 21:04:54,946 INFO L226 Difference]: Without dead ends: 53677 [2022-11-02 21:04:55,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:04:55,039 INFO L413 NwaCegarLoop]: 4794 mSDtfsCounter, 5247 mSDsluCounter, 17450 mSDsCounter, 0 mSdLazyCounter, 2678 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5264 SdHoareTripleChecker+Valid, 22244 SdHoareTripleChecker+Invalid, 2762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:55,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5264 Valid, 22244 Invalid, 2762 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [84 Valid, 2678 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-02 21:04:55,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53677 states. [2022-11-02 21:05:00,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53677 to 41230. [2022-11-02 21:05:00,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41230 states, 37893 states have (on average 1.5734304488955744) internal successors, (59622), 38023 states have internal predecessors, (59622), 2439 states have call successors, (2439), 768 states have call predecessors, (2439), 896 states have return successors, (4882), 2566 states have call predecessors, (4882), 2439 states have call successors, (4882) [2022-11-02 21:05:00,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41230 states to 41230 states and 66943 transitions. [2022-11-02 21:05:00,889 INFO L78 Accepts]: Start accepts. Automaton has 41230 states and 66943 transitions. Word has length 156 [2022-11-02 21:05:00,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:00,889 INFO L495 AbstractCegarLoop]: Abstraction has 41230 states and 66943 transitions. [2022-11-02 21:05:00,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:05:00,889 INFO L276 IsEmpty]: Start isEmpty. Operand 41230 states and 66943 transitions. [2022-11-02 21:05:01,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-02 21:05:01,063 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:01,064 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:01,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 21:05:01,064 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:01,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:01,065 INFO L85 PathProgramCache]: Analyzing trace with hash -808533579, now seen corresponding path program 1 times [2022-11-02 21:05:01,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:05:01,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129385708] [2022-11-02 21:05:01,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:01,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:05:01,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:01,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:05:01,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:01,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-02 21:05:01,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:01,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 21:05:01,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:01,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-02 21:05:01,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:01,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-02 21:05:01,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:01,362 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 21:05:01,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:05:01,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129385708] [2022-11-02 21:05:01,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129385708] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:01,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:01,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:05:01,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069318294] [2022-11-02 21:05:01,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:01,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:05:01,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:05:01,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:05:01,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:05:01,365 INFO L87 Difference]: Start difference. First operand 41230 states and 66943 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)