./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.08.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b54aa3-11ee-4e65-91fb-2f06229a4c4a/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b54aa3-11ee-4e65-91fb-2f06229a4c4a/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b54aa3-11ee-4e65-91fb-2f06229a4c4a/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b54aa3-11ee-4e65-91fb-2f06229a4c4a/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.08.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b54aa3-11ee-4e65-91fb-2f06229a4c4a/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b54aa3-11ee-4e65-91fb-2f06229a4c4a/bin/uautomizer-DrprNOufMa --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 7889f6823684efa4d90d392ed393927ee5c2d2eb45f6dbf47b7c030213ef334f --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 21:59:24,440 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 21:59:24,442 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 21:59:24,473 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 21:59:24,473 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 21:59:24,475 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 21:59:24,476 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 21:59:24,478 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 21:59:24,480 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 21:59:24,481 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 21:59:24,483 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 21:59:24,484 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 21:59:24,484 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 21:59:24,486 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 21:59:24,487 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 21:59:24,488 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 21:59:24,489 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 21:59:24,490 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 21:59:24,493 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 21:59:24,495 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 21:59:24,497 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 21:59:24,498 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 21:59:24,500 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 21:59:24,501 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 21:59:24,504 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 21:59:24,505 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 21:59:24,505 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 21:59:24,506 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 21:59:24,507 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 21:59:24,508 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 21:59:24,508 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 21:59:24,509 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 21:59:24,510 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 21:59:24,511 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 21:59:24,512 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 21:59:24,512 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 21:59:24,513 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 21:59:24,513 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 21:59:24,513 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 21:59:24,514 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 21:59:24,515 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 21:59:24,516 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b54aa3-11ee-4e65-91fb-2f06229a4c4a/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 21:59:24,540 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 21:59:24,540 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 21:59:24,540 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 21:59:24,541 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 21:59:24,541 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 21:59:24,541 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 21:59:24,542 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 21:59:24,542 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 21:59:24,542 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 21:59:24,543 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 21:59:24,543 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 21:59:24,543 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 21:59:24,543 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 21:59:24,543 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 21:59:24,544 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 21:59:24,544 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 21:59:24,544 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 21:59:24,544 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 21:59:24,544 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 21:59:24,545 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 21:59:24,545 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 21:59:24,545 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 21:59:24,545 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 21:59:24,545 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 21:59:24,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 21:59:24,546 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 21:59:24,546 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 21:59:24,546 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 21:59:24,546 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 21:59:24,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 21:59:24,547 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 21:59:24,547 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 21:59:24,547 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 21:59:24,547 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 21:59:24,548 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_83b54aa3-11ee-4e65-91fb-2f06229a4c4a/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b54aa3-11ee-4e65-91fb-2f06229a4c4a/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7889f6823684efa4d90d392ed393927ee5c2d2eb45f6dbf47b7c030213ef334f [2021-12-06 21:59:24,748 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 21:59:24,762 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 21:59:24,764 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 21:59:24,765 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 21:59:24,766 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 21:59:24,767 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b54aa3-11ee-4e65-91fb-2f06229a4c4a/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.08.cil-1.c [2021-12-06 21:59:24,818 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b54aa3-11ee-4e65-91fb-2f06229a4c4a/bin/uautomizer-DrprNOufMa/data/deb92cc88/b92a1ae9d30f4b0e884a9c2c2f92368f/FLAGe09fc1242 [2021-12-06 21:59:25,214 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 21:59:25,215 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b54aa3-11ee-4e65-91fb-2f06229a4c4a/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.08.cil-1.c [2021-12-06 21:59:25,227 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b54aa3-11ee-4e65-91fb-2f06229a4c4a/bin/uautomizer-DrprNOufMa/data/deb92cc88/b92a1ae9d30f4b0e884a9c2c2f92368f/FLAGe09fc1242 [2021-12-06 21:59:25,241 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b54aa3-11ee-4e65-91fb-2f06229a4c4a/bin/uautomizer-DrprNOufMa/data/deb92cc88/b92a1ae9d30f4b0e884a9c2c2f92368f [2021-12-06 21:59:25,243 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 21:59:25,244 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 21:59:25,246 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 21:59:25,246 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 21:59:25,248 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 21:59:25,249 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 09:59:25" (1/1) ... [2021-12-06 21:59:25,250 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9a7cd4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:59:25, skipping insertion in model container [2021-12-06 21:59:25,250 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 09:59:25" (1/1) ... [2021-12-06 21:59:25,255 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 21:59:25,294 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 21:59:25,427 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_83b54aa3-11ee-4e65-91fb-2f06229a4c4a/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.08.cil-1.c[914,927] [2021-12-06 21:59:25,475 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_83b54aa3-11ee-4e65-91fb-2f06229a4c4a/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.08.cil-1.c[7115,7128] [2021-12-06 21:59:25,546 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 21:59:25,557 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 21:59:25,568 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_83b54aa3-11ee-4e65-91fb-2f06229a4c4a/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.08.cil-1.c[914,927] [2021-12-06 21:59:25,582 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_83b54aa3-11ee-4e65-91fb-2f06229a4c4a/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.08.cil-1.c[7115,7128] [2021-12-06 21:59:25,625 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 21:59:25,645 INFO L208 MainTranslator]: Completed translation [2021-12-06 21:59:25,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:59:25 WrapperNode [2021-12-06 21:59:25,646 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 21:59:25,646 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 21:59:25,646 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 21:59:25,647 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 21:59:25,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:59:25" (1/1) ... [2021-12-06 21:59:25,667 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:59:25" (1/1) ... [2021-12-06 21:59:25,715 INFO L137 Inliner]: procedures = 69, calls = 81, calls flagged for inlining = 38, calls inlined = 38, statements flattened = 808 [2021-12-06 21:59:25,715 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 21:59:25,716 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 21:59:25,716 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 21:59:25,716 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 21:59:25,725 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:59:25" (1/1) ... [2021-12-06 21:59:25,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:59:25" (1/1) ... [2021-12-06 21:59:25,730 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:59:25" (1/1) ... [2021-12-06 21:59:25,731 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:59:25" (1/1) ... [2021-12-06 21:59:25,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:59:25" (1/1) ... [2021-12-06 21:59:25,762 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:59:25" (1/1) ... [2021-12-06 21:59:25,766 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:59:25" (1/1) ... [2021-12-06 21:59:25,772 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 21:59:25,773 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 21:59:25,774 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 21:59:25,774 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 21:59:25,775 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:59:25" (1/1) ... [2021-12-06 21:59:25,781 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 21:59:25,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b54aa3-11ee-4e65-91fb-2f06229a4c4a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:59:25,803 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b54aa3-11ee-4e65-91fb-2f06229a4c4a/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 21:59:25,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b54aa3-11ee-4e65-91fb-2f06229a4c4a/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 21:59:25,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 21:59:25,839 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-06 21:59:25,839 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-06 21:59:25,840 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2021-12-06 21:59:25,840 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2021-12-06 21:59:25,840 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2021-12-06 21:59:25,840 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2021-12-06 21:59:25,840 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2021-12-06 21:59:25,840 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2021-12-06 21:59:25,841 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2021-12-06 21:59:25,841 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2021-12-06 21:59:25,841 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2021-12-06 21:59:25,841 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2021-12-06 21:59:25,841 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2021-12-06 21:59:25,841 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2021-12-06 21:59:25,841 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2021-12-06 21:59:25,842 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2021-12-06 21:59:25,842 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2021-12-06 21:59:25,842 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2021-12-06 21:59:25,842 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2021-12-06 21:59:25,842 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2021-12-06 21:59:25,842 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2021-12-06 21:59:25,842 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2021-12-06 21:59:25,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 21:59:25,843 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2021-12-06 21:59:25,843 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2021-12-06 21:59:25,843 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2021-12-06 21:59:25,843 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2021-12-06 21:59:25,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 21:59:25,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 21:59:25,844 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2021-12-06 21:59:25,844 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2021-12-06 21:59:25,936 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 21:59:25,938 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 21:59:26,377 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 21:59:26,388 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 21:59:26,389 INFO L301 CfgBuilder]: Removed 15 assume(true) statements. [2021-12-06 21:59:26,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 09:59:26 BoogieIcfgContainer [2021-12-06 21:59:26,391 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 21:59:26,393 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 21:59:26,394 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 21:59:26,397 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 21:59:26,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 09:59:25" (1/3) ... [2021-12-06 21:59:26,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ae71218 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 09:59:26, skipping insertion in model container [2021-12-06 21:59:26,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:59:25" (2/3) ... [2021-12-06 21:59:26,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ae71218 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 09:59:26, skipping insertion in model container [2021-12-06 21:59:26,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 09:59:26" (3/3) ... [2021-12-06 21:59:26,400 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.08.cil-1.c [2021-12-06 21:59:26,405 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 21:59:26,405 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-06 21:59:26,446 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 21:59:26,452 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 21:59:26,452 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-06 21:59:26,479 INFO L276 IsEmpty]: Start isEmpty. Operand has 383 states, 330 states have (on average 1.621212121212121) internal successors, (535), 336 states have internal predecessors, (535), 36 states have call successors, (36), 14 states have call predecessors, (36), 14 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2021-12-06 21:59:26,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-06 21:59:26,487 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:59:26,487 INFO L514 BasicCegarLoop]: 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] [2021-12-06 21:59:26,488 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:59:26,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:59:26,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1589538386, now seen corresponding path program 1 times [2021-12-06 21:59:26,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:59:26,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8538361] [2021-12-06 21:59:26,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:59:26,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:59:26,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:26,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 21:59:26,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:26,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:59:26,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:26,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 21:59:26,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:26,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:59:26,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:26,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 21:59:26,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:26,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 21:59:26,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:26,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 21:59:26,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:26,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:59:26,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:59:26,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8538361] [2021-12-06 21:59:26,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8538361] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:59:26,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:59:26,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 21:59:26,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637027306] [2021-12-06 21:59:26,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:59:26,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 21:59:26,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:59:26,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 21:59:26,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-06 21:59:26,776 INFO L87 Difference]: Start difference. First operand has 383 states, 330 states have (on average 1.621212121212121) internal successors, (535), 336 states have internal predecessors, (535), 36 states have call successors, (36), 14 states have call predecessors, (36), 14 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-06 21:59:27,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:59:27,534 INFO L93 Difference]: Finished difference Result 877 states and 1380 transitions. [2021-12-06 21:59:27,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 21:59:27,537 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2021-12-06 21:59:27,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:59:27,553 INFO L225 Difference]: With dead ends: 877 [2021-12-06 21:59:27,554 INFO L226 Difference]: Without dead ends: 508 [2021-12-06 21:59:27,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2021-12-06 21:59:27,564 INFO L933 BasicCegarLoop]: 579 mSDtfsCounter, 1232 mSDsluCounter, 1113 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1237 SdHoareTripleChecker+Valid, 1692 SdHoareTripleChecker+Invalid, 1042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 21:59:27,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1237 Valid, 1692 Invalid, 1042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 21:59:27,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2021-12-06 21:59:27,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 469. [2021-12-06 21:59:27,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 398 states have (on average 1.5025125628140703) internal successors, (598), 404 states have internal predecessors, (598), 47 states have call successors, (47), 21 states have call predecessors, (47), 22 states have return successors, (50), 46 states have call predecessors, (50), 45 states have call successors, (50) [2021-12-06 21:59:27,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 695 transitions. [2021-12-06 21:59:27,649 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 695 transitions. Word has length 65 [2021-12-06 21:59:27,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:59:27,649 INFO L470 AbstractCegarLoop]: Abstraction has 469 states and 695 transitions. [2021-12-06 21:59:27,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-06 21:59:27,650 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 695 transitions. [2021-12-06 21:59:27,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-06 21:59:27,653 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:59:27,654 INFO L514 BasicCegarLoop]: 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] [2021-12-06 21:59:27,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 21:59:27,654 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:59:27,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:59:27,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1026540270, now seen corresponding path program 1 times [2021-12-06 21:59:27,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:59:27,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717695793] [2021-12-06 21:59:27,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:59:27,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:59:27,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:27,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 21:59:27,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:27,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:59:27,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:27,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 21:59:27,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:27,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:59:27,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:27,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 21:59:27,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:27,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 21:59:27,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:27,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 21:59:27,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:27,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:59:27,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:59:27,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717695793] [2021-12-06 21:59:27,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717695793] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:59:27,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:59:27,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 21:59:27,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873296560] [2021-12-06 21:59:27,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:59:27,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 21:59:27,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:59:27,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 21:59:27,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 21:59:27,780 INFO L87 Difference]: Start difference. First operand 469 states and 695 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-06 21:59:28,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:59:28,487 INFO L93 Difference]: Finished difference Result 816 states and 1172 transitions. [2021-12-06 21:59:28,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 21:59:28,488 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2021-12-06 21:59:28,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:59:28,494 INFO L225 Difference]: With dead ends: 816 [2021-12-06 21:59:28,494 INFO L226 Difference]: Without dead ends: 639 [2021-12-06 21:59:28,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2021-12-06 21:59:28,497 INFO L933 BasicCegarLoop]: 614 mSDtfsCounter, 1115 mSDsluCounter, 1590 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 2204 SdHoareTripleChecker+Invalid, 1262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 21:59:28,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1142 Valid, 2204 Invalid, 1262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 21:59:28,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2021-12-06 21:59:28,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 565. [2021-12-06 21:59:28,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 474 states have (on average 1.481012658227848) internal successors, (702), 482 states have internal predecessors, (702), 58 states have call successors, (58), 28 states have call predecessors, (58), 31 states have return successors, (69), 58 states have call predecessors, (69), 56 states have call successors, (69) [2021-12-06 21:59:28,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 829 transitions. [2021-12-06 21:59:28,549 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 829 transitions. Word has length 65 [2021-12-06 21:59:28,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:59:28,549 INFO L470 AbstractCegarLoop]: Abstraction has 565 states and 829 transitions. [2021-12-06 21:59:28,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-06 21:59:28,550 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 829 transitions. [2021-12-06 21:59:28,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-06 21:59:28,553 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:59:28,554 INFO L514 BasicCegarLoop]: 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] [2021-12-06 21:59:28,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 21:59:28,554 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:59:28,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:59:28,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1239840916, now seen corresponding path program 1 times [2021-12-06 21:59:28,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:59:28,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826980486] [2021-12-06 21:59:28,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:59:28,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:59:28,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:28,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 21:59:28,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:28,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:59:28,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:28,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 21:59:28,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:28,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:59:28,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:28,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 21:59:28,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:28,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 21:59:28,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:28,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 21:59:28,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:28,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:59:28,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:59:28,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826980486] [2021-12-06 21:59:28,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826980486] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:59:28,686 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:59:28,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 21:59:28,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358718263] [2021-12-06 21:59:28,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:59:28,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 21:59:28,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:59:28,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 21:59:28,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-06 21:59:28,688 INFO L87 Difference]: Start difference. First operand 565 states and 829 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 21:59:29,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:59:29,249 INFO L93 Difference]: Finished difference Result 866 states and 1243 transitions. [2021-12-06 21:59:29,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 21:59:29,249 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2021-12-06 21:59:29,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:59:29,252 INFO L225 Difference]: With dead ends: 866 [2021-12-06 21:59:29,253 INFO L226 Difference]: Without dead ends: 599 [2021-12-06 21:59:29,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-06 21:59:29,255 INFO L933 BasicCegarLoop]: 551 mSDtfsCounter, 728 mSDsluCounter, 1802 mSDsCounter, 0 mSdLazyCounter, 1128 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 2353 SdHoareTripleChecker+Invalid, 1257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 21:59:29,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [729 Valid, 2353 Invalid, 1257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1128 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 21:59:29,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-12-06 21:59:29,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 570. [2021-12-06 21:59:29,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 478 states have (on average 1.4728033472803348) internal successors, (704), 486 states have internal predecessors, (704), 58 states have call successors, (58), 28 states have call predecessors, (58), 32 states have return successors, (70), 59 states have call predecessors, (70), 56 states have call successors, (70) [2021-12-06 21:59:29,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 832 transitions. [2021-12-06 21:59:29,282 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 832 transitions. Word has length 65 [2021-12-06 21:59:29,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:59:29,282 INFO L470 AbstractCegarLoop]: Abstraction has 570 states and 832 transitions. [2021-12-06 21:59:29,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 21:59:29,282 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 832 transitions. [2021-12-06 21:59:29,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-06 21:59:29,284 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:59:29,284 INFO L514 BasicCegarLoop]: 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] [2021-12-06 21:59:29,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 21:59:29,284 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:59:29,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:59:29,285 INFO L85 PathProgramCache]: Analyzing trace with hash 210481618, now seen corresponding path program 1 times [2021-12-06 21:59:29,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:59:29,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561288441] [2021-12-06 21:59:29,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:59:29,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:59:29,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:29,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 21:59:29,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:29,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:59:29,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:29,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 21:59:29,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:29,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:59:29,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:29,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 21:59:29,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:29,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 21:59:29,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:29,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 21:59:29,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:29,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:59:29,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:59:29,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561288441] [2021-12-06 21:59:29,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561288441] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:59:29,401 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:59:29,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 21:59:29,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920163650] [2021-12-06 21:59:29,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:59:29,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 21:59:29,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:59:29,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 21:59:29,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-06 21:59:29,403 INFO L87 Difference]: Start difference. First operand 570 states and 832 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2021-12-06 21:59:30,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:59:30,648 INFO L93 Difference]: Finished difference Result 2232 states and 3104 transitions. [2021-12-06 21:59:30,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-06 21:59:30,648 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 65 [2021-12-06 21:59:30,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:59:30,658 INFO L225 Difference]: With dead ends: 2232 [2021-12-06 21:59:30,658 INFO L226 Difference]: Without dead ends: 1960 [2021-12-06 21:59:30,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=235, Invalid=887, Unknown=0, NotChecked=0, Total=1122 [2021-12-06 21:59:30,661 INFO L933 BasicCegarLoop]: 778 mSDtfsCounter, 2418 mSDsluCounter, 1455 mSDsCounter, 0 mSdLazyCounter, 1511 mSolverCounterSat, 531 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2435 SdHoareTripleChecker+Valid, 2233 SdHoareTripleChecker+Invalid, 2042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 531 IncrementalHoareTripleChecker+Valid, 1511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 21:59:30,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2435 Valid, 2233 Invalid, 2042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [531 Valid, 1511 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-06 21:59:30,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1960 states. [2021-12-06 21:59:30,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1960 to 1710. [2021-12-06 21:59:30,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1710 states, 1378 states have (on average 1.3679245283018868) internal successors, (1885), 1406 states have internal predecessors, (1885), 175 states have call successors, (175), 130 states have call predecessors, (175), 155 states have return successors, (256), 177 states have call predecessors, (256), 173 states have call successors, (256) [2021-12-06 21:59:30,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1710 states to 1710 states and 2316 transitions. [2021-12-06 21:59:30,750 INFO L78 Accepts]: Start accepts. Automaton has 1710 states and 2316 transitions. Word has length 65 [2021-12-06 21:59:30,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:59:30,751 INFO L470 AbstractCegarLoop]: Abstraction has 1710 states and 2316 transitions. [2021-12-06 21:59:30,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2021-12-06 21:59:30,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1710 states and 2316 transitions. [2021-12-06 21:59:30,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-06 21:59:30,752 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:59:30,752 INFO L514 BasicCegarLoop]: 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] [2021-12-06 21:59:30,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 21:59:30,753 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:59:30,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:59:30,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1261930707, now seen corresponding path program 1 times [2021-12-06 21:59:30,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:59:30,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892845211] [2021-12-06 21:59:30,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:59:30,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:59:30,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:30,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 21:59:30,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:30,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:59:30,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:30,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 21:59:30,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:30,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:59:30,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:30,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 21:59:30,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:30,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 21:59:30,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:30,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 21:59:30,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:30,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:59:30,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:59:30,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892845211] [2021-12-06 21:59:30,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892845211] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:59:30,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:59:30,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 21:59:30,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034684291] [2021-12-06 21:59:30,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:59:30,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 21:59:30,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:59:30,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 21:59:30,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-06 21:59:30,854 INFO L87 Difference]: Start difference. First operand 1710 states and 2316 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 21:59:31,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:59:31,453 INFO L93 Difference]: Finished difference Result 3311 states and 4440 transitions. [2021-12-06 21:59:31,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 21:59:31,453 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2021-12-06 21:59:31,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:59:31,464 INFO L225 Difference]: With dead ends: 3311 [2021-12-06 21:59:31,465 INFO L226 Difference]: Without dead ends: 1899 [2021-12-06 21:59:31,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2021-12-06 21:59:31,470 INFO L933 BasicCegarLoop]: 549 mSDtfsCounter, 726 mSDsluCounter, 1797 mSDsCounter, 0 mSdLazyCounter, 1133 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 2346 SdHoareTripleChecker+Invalid, 1262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 21:59:31,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [727 Valid, 2346 Invalid, 1262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1133 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 21:59:31,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2021-12-06 21:59:31,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1755. [2021-12-06 21:59:31,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1755 states, 1414 states have (on average 1.3521923620933523) internal successors, (1912), 1442 states have internal predecessors, (1912), 175 states have call successors, (175), 130 states have call predecessors, (175), 164 states have return successors, (268), 186 states have call predecessors, (268), 173 states have call successors, (268) [2021-12-06 21:59:31,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1755 states to 1755 states and 2355 transitions. [2021-12-06 21:59:31,564 INFO L78 Accepts]: Start accepts. Automaton has 1755 states and 2355 transitions. Word has length 65 [2021-12-06 21:59:31,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:59:31,564 INFO L470 AbstractCegarLoop]: Abstraction has 1755 states and 2355 transitions. [2021-12-06 21:59:31,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 21:59:31,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1755 states and 2355 transitions. [2021-12-06 21:59:31,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-06 21:59:31,566 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:59:31,566 INFO L514 BasicCegarLoop]: 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] [2021-12-06 21:59:31,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 21:59:31,566 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:59:31,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:59:31,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1646833195, now seen corresponding path program 1 times [2021-12-06 21:59:31,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:59:31,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943068771] [2021-12-06 21:59:31,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:59:31,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:59:31,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:31,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 21:59:31,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:31,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:59:31,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:31,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 21:59:31,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:31,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:59:31,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:31,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 21:59:31,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:31,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 21:59:31,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:31,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 21:59:31,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:31,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:59:31,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:59:31,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943068771] [2021-12-06 21:59:31,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943068771] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:59:31,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:59:31,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 21:59:31,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496892052] [2021-12-06 21:59:31,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:59:31,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 21:59:31,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:59:31,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 21:59:31,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 21:59:31,647 INFO L87 Difference]: Start difference. First operand 1755 states and 2355 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-06 21:59:32,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:59:32,253 INFO L93 Difference]: Finished difference Result 3190 states and 4194 transitions. [2021-12-06 21:59:32,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 21:59:32,253 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2021-12-06 21:59:32,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:59:32,261 INFO L225 Difference]: With dead ends: 3190 [2021-12-06 21:59:32,261 INFO L226 Difference]: Without dead ends: 1953 [2021-12-06 21:59:32,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2021-12-06 21:59:32,264 INFO L933 BasicCegarLoop]: 561 mSDtfsCounter, 1384 mSDsluCounter, 1104 mSDsCounter, 0 mSdLazyCounter, 990 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1409 SdHoareTripleChecker+Valid, 1665 SdHoareTripleChecker+Invalid, 1191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 21:59:32,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1409 Valid, 1665 Invalid, 1191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 990 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 21:59:32,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1953 states. [2021-12-06 21:59:32,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1953 to 1733. [2021-12-06 21:59:32,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1733 states, 1400 states have (on average 1.3485714285714285) internal successors, (1888), 1422 states have internal predecessors, (1888), 175 states have call successors, (175), 130 states have call predecessors, (175), 156 states have return successors, (252), 184 states have call predecessors, (252), 173 states have call successors, (252) [2021-12-06 21:59:32,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 2315 transitions. [2021-12-06 21:59:32,335 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 2315 transitions. Word has length 65 [2021-12-06 21:59:32,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:59:32,335 INFO L470 AbstractCegarLoop]: Abstraction has 1733 states and 2315 transitions. [2021-12-06 21:59:32,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-06 21:59:32,340 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 2315 transitions. [2021-12-06 21:59:32,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-06 21:59:32,341 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:59:32,341 INFO L514 BasicCegarLoop]: 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] [2021-12-06 21:59:32,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 21:59:32,341 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:59:32,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:59:32,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1780846701, now seen corresponding path program 1 times [2021-12-06 21:59:32,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:59:32,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766402681] [2021-12-06 21:59:32,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:59:32,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:59:32,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:32,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 21:59:32,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:32,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:59:32,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:32,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 21:59:32,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:32,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:59:32,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:32,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 21:59:32,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:32,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 21:59:32,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:32,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 21:59:32,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:32,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:59:32,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:59:32,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766402681] [2021-12-06 21:59:32,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766402681] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:59:32,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:59:32,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:59:32,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975876459] [2021-12-06 21:59:32,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:59:32,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:59:32,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:59:32,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:59:32,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:59:32,409 INFO L87 Difference]: Start difference. First operand 1733 states and 2315 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-06 21:59:32,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:59:32,767 INFO L93 Difference]: Finished difference Result 4808 states and 6294 transitions. [2021-12-06 21:59:32,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 21:59:32,768 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2021-12-06 21:59:32,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:59:32,784 INFO L225 Difference]: With dead ends: 4808 [2021-12-06 21:59:32,785 INFO L226 Difference]: Without dead ends: 3376 [2021-12-06 21:59:32,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-12-06 21:59:32,790 INFO L933 BasicCegarLoop]: 532 mSDtfsCounter, 1080 mSDsluCounter, 1055 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1111 SdHoareTripleChecker+Valid, 1587 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 21:59:32,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1111 Valid, 1587 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 21:59:32,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3376 states. [2021-12-06 21:59:32,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3376 to 3104. [2021-12-06 21:59:32,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3104 states, 2466 states have (on average 1.2996755879967559) internal successors, (3205), 2509 states have internal predecessors, (3205), 327 states have call successors, (327), 253 states have call predecessors, (327), 309 states have return successors, (524), 348 states have call predecessors, (524), 325 states have call successors, (524) [2021-12-06 21:59:32,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3104 states to 3104 states and 4056 transitions. [2021-12-06 21:59:32,925 INFO L78 Accepts]: Start accepts. Automaton has 3104 states and 4056 transitions. Word has length 65 [2021-12-06 21:59:32,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:59:32,926 INFO L470 AbstractCegarLoop]: Abstraction has 3104 states and 4056 transitions. [2021-12-06 21:59:32,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-06 21:59:32,926 INFO L276 IsEmpty]: Start isEmpty. Operand 3104 states and 4056 transitions. [2021-12-06 21:59:32,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-06 21:59:32,928 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:59:32,928 INFO L514 BasicCegarLoop]: 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] [2021-12-06 21:59:32,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 21:59:32,928 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:59:32,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:59:32,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1311152709, now seen corresponding path program 1 times [2021-12-06 21:59:32,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:59:32,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557902091] [2021-12-06 21:59:32,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:59:32,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:59:32,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:32,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 21:59:32,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:32,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:59:32,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:32,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 21:59:32,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:32,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:59:32,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:32,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 21:59:32,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:32,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 21:59:32,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:32,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 21:59:32,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:32,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:59:32,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:59:32,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557902091] [2021-12-06 21:59:32,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557902091] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:59:32,984 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:59:32,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 21:59:32,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906443343] [2021-12-06 21:59:32,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:59:32,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 21:59:32,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:59:32,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 21:59:32,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 21:59:32,986 INFO L87 Difference]: Start difference. First operand 3104 states and 4056 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 21:59:33,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:59:33,408 INFO L93 Difference]: Finished difference Result 8122 states and 10570 transitions. [2021-12-06 21:59:33,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 21:59:33,408 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2021-12-06 21:59:33,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:59:33,433 INFO L225 Difference]: With dead ends: 8122 [2021-12-06 21:59:33,433 INFO L226 Difference]: Without dead ends: 5298 [2021-12-06 21:59:33,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-12-06 21:59:33,441 INFO L933 BasicCegarLoop]: 565 mSDtfsCounter, 659 mSDsluCounter, 1066 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 21:59:33,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [667 Valid, 1631 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 21:59:33,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5298 states. [2021-12-06 21:59:33,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5298 to 4782. [2021-12-06 21:59:33,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4782 states, 3751 states have (on average 1.28099173553719) internal successors, (4805), 3801 states have internal predecessors, (4805), 521 states have call successors, (521), 427 states have call predecessors, (521), 508 states have return successors, (845), 560 states have call predecessors, (845), 519 states have call successors, (845) [2021-12-06 21:59:33,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4782 states to 4782 states and 6171 transitions. [2021-12-06 21:59:33,650 INFO L78 Accepts]: Start accepts. Automaton has 4782 states and 6171 transitions. Word has length 66 [2021-12-06 21:59:33,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:59:33,651 INFO L470 AbstractCegarLoop]: Abstraction has 4782 states and 6171 transitions. [2021-12-06 21:59:33,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 21:59:33,651 INFO L276 IsEmpty]: Start isEmpty. Operand 4782 states and 6171 transitions. [2021-12-06 21:59:33,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-06 21:59:33,653 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:59:33,653 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:59:33,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 21:59:33,653 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:59:33,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:59:33,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1242800463, now seen corresponding path program 1 times [2021-12-06 21:59:33,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:59:33,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977806544] [2021-12-06 21:59:33,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:59:33,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:59:33,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:33,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 21:59:33,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:33,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:59:33,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:33,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 21:59:33,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:33,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:59:33,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:33,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 21:59:33,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:33,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 21:59:33,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:33,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 21:59:33,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:33,712 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:59:33,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:59:33,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977806544] [2021-12-06 21:59:33,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977806544] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:59:33,713 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:59:33,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:59:33,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797212339] [2021-12-06 21:59:33,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:59:33,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:59:33,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:59:33,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:59:33,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:59:33,714 INFO L87 Difference]: Start difference. First operand 4782 states and 6171 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-06 21:59:34,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:59:34,162 INFO L93 Difference]: Finished difference Result 6412 states and 8173 transitions. [2021-12-06 21:59:34,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 21:59:34,162 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2021-12-06 21:59:34,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:59:34,187 INFO L225 Difference]: With dead ends: 6412 [2021-12-06 21:59:34,187 INFO L226 Difference]: Without dead ends: 6409 [2021-12-06 21:59:34,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2021-12-06 21:59:34,190 INFO L933 BasicCegarLoop]: 563 mSDtfsCounter, 1889 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1898 SdHoareTripleChecker+Valid, 1111 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 21:59:34,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1898 Valid, 1111 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [320 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 21:59:34,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6409 states. [2021-12-06 21:59:34,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6409 to 5836. [2021-12-06 21:59:34,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5836 states, 4554 states have (on average 1.2681159420289856) internal successors, (5775), 4613 states have internal predecessors, (5775), 647 states have call successors, (647), 541 states have call predecessors, (647), 633 states have return successors, (1038), 688 states have call predecessors, (1038), 646 states have call successors, (1038) [2021-12-06 21:59:34,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5836 states to 5836 states and 7460 transitions. [2021-12-06 21:59:34,444 INFO L78 Accepts]: Start accepts. Automaton has 5836 states and 7460 transitions. Word has length 73 [2021-12-06 21:59:34,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:59:34,445 INFO L470 AbstractCegarLoop]: Abstraction has 5836 states and 7460 transitions. [2021-12-06 21:59:34,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-06 21:59:34,445 INFO L276 IsEmpty]: Start isEmpty. Operand 5836 states and 7460 transitions. [2021-12-06 21:59:34,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-06 21:59:34,447 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:59:34,447 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:59:34,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 21:59:34,447 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:59:34,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:59:34,448 INFO L85 PathProgramCache]: Analyzing trace with hash 126751022, now seen corresponding path program 1 times [2021-12-06 21:59:34,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:59:34,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922366891] [2021-12-06 21:59:34,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:59:34,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:59:34,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:34,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 21:59:34,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:34,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:59:34,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:34,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 21:59:34,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:34,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:59:34,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:34,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 21:59:34,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:34,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 21:59:34,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:34,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 21:59:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:34,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:59:34,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:59:34,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922366891] [2021-12-06 21:59:34,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922366891] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:59:34,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422366055] [2021-12-06 21:59:34,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:59:34,533 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:59:34,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b54aa3-11ee-4e65-91fb-2f06229a4c4a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:59:34,534 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b54aa3-11ee-4e65-91fb-2f06229a4c4a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:59:34,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b54aa3-11ee-4e65-91fb-2f06229a4c4a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 21:59:34,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:34,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 21:59:34,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:59:34,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:59:34,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:59:35,058 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:59:35,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422366055] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 21:59:35,058 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 21:59:35,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2021-12-06 21:59:35,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275223037] [2021-12-06 21:59:35,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 21:59:35,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:59:35,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:59:35,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:59:35,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:59:35,060 INFO L87 Difference]: Start difference. First operand 5836 states and 7460 transitions. Second operand has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-12-06 21:59:36,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:59:36,349 INFO L93 Difference]: Finished difference Result 13482 states and 16988 transitions. [2021-12-06 21:59:36,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-06 21:59:36,350 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 74 [2021-12-06 21:59:36,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:59:36,393 INFO L225 Difference]: With dead ends: 13482 [2021-12-06 21:59:36,393 INFO L226 Difference]: Without dead ends: 13479 [2021-12-06 21:59:36,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 174 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2021-12-06 21:59:36,397 INFO L933 BasicCegarLoop]: 725 mSDtfsCounter, 1589 mSDsluCounter, 1945 mSDsCounter, 0 mSdLazyCounter, 1883 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1654 SdHoareTripleChecker+Valid, 2670 SdHoareTripleChecker+Invalid, 2106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 1883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 21:59:36,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1654 Valid, 2670 Invalid, 2106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 1883 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 21:59:36,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13479 states. [2021-12-06 21:59:36,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13479 to 11094. [2021-12-06 21:59:36,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11094 states, 8646 states have (on average 1.2588480222068008) internal successors, (10884), 8757 states have internal predecessors, (10884), 1213 states have call successors, (1213), 1031 states have call predecessors, (1213), 1233 states have return successors, (1977), 1312 states have call predecessors, (1977), 1212 states have call successors, (1977) [2021-12-06 21:59:36,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11094 states to 11094 states and 14074 transitions. [2021-12-06 21:59:36,825 INFO L78 Accepts]: Start accepts. Automaton has 11094 states and 14074 transitions. Word has length 74 [2021-12-06 21:59:36,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:59:36,825 INFO L470 AbstractCegarLoop]: Abstraction has 11094 states and 14074 transitions. [2021-12-06 21:59:36,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-12-06 21:59:36,825 INFO L276 IsEmpty]: Start isEmpty. Operand 11094 states and 14074 transitions. [2021-12-06 21:59:36,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-06 21:59:36,828 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:59:36,828 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:59:36,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b54aa3-11ee-4e65-91fb-2f06229a4c4a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 21:59:37,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b54aa3-11ee-4e65-91fb-2f06229a4c4a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:59:37,030 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:59:37,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:59:37,031 INFO L85 PathProgramCache]: Analyzing trace with hash -567160719, now seen corresponding path program 2 times [2021-12-06 21:59:37,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:59:37,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372189976] [2021-12-06 21:59:37,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:59:37,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:59:37,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:37,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 21:59:37,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:37,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:59:37,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:37,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 21:59:37,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:37,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:59:37,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:37,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 21:59:37,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:37,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 21:59:37,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:37,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 21:59:37,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:37,117 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:59:37,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:59:37,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372189976] [2021-12-06 21:59:37,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372189976] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:59:37,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:59:37,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 21:59:37,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455182959] [2021-12-06 21:59:37,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:59:37,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 21:59:37,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:59:37,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 21:59:37,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 21:59:37,118 INFO L87 Difference]: Start difference. First operand 11094 states and 14074 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-06 21:59:37,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:59:37,606 INFO L93 Difference]: Finished difference Result 17637 states and 22416 transitions. [2021-12-06 21:59:37,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 21:59:37,606 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 77 [2021-12-06 21:59:37,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:59:37,623 INFO L225 Difference]: With dead ends: 17637 [2021-12-06 21:59:37,623 INFO L226 Difference]: Without dead ends: 7699 [2021-12-06 21:59:37,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:59:37,659 INFO L933 BasicCegarLoop]: 608 mSDtfsCounter, 986 mSDsluCounter, 881 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1017 SdHoareTripleChecker+Valid, 1489 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 21:59:37,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1017 Valid, 1489 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 21:59:37,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7699 states. [2021-12-06 21:59:37,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7699 to 7147. [2021-12-06 21:59:37,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7147 states, 5593 states have (on average 1.237976041480422) internal successors, (6924), 5660 states have internal predecessors, (6924), 780 states have call successors, (780), 655 states have call predecessors, (780), 772 states have return successors, (1196), 838 states have call predecessors, (1196), 779 states have call successors, (1196) [2021-12-06 21:59:37,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7147 states to 7147 states and 8900 transitions. [2021-12-06 21:59:37,980 INFO L78 Accepts]: Start accepts. Automaton has 7147 states and 8900 transitions. Word has length 77 [2021-12-06 21:59:37,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:59:37,980 INFO L470 AbstractCegarLoop]: Abstraction has 7147 states and 8900 transitions. [2021-12-06 21:59:37,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-06 21:59:37,980 INFO L276 IsEmpty]: Start isEmpty. Operand 7147 states and 8900 transitions. [2021-12-06 21:59:37,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-12-06 21:59:37,983 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:59:37,983 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:59:37,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 21:59:37,983 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:59:37,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:59:37,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1983760768, now seen corresponding path program 1 times [2021-12-06 21:59:37,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:59:37,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862077182] [2021-12-06 21:59:37,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:59:37,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:59:37,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:38,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 21:59:38,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:38,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:59:38,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:38,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 21:59:38,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:38,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:59:38,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:38,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 21:59:38,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:38,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 21:59:38,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:38,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 21:59:38,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:38,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 21:59:38,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:38,051 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 21:59:38,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:59:38,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862077182] [2021-12-06 21:59:38,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862077182] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:59:38,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:59:38,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 21:59:38,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992060325] [2021-12-06 21:59:38,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:59:38,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 21:59:38,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:59:38,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 21:59:38,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-06 21:59:38,053 INFO L87 Difference]: Start difference. First operand 7147 states and 8900 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 21:59:39,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:59:39,124 INFO L93 Difference]: Finished difference Result 21021 states and 26117 transitions. [2021-12-06 21:59:39,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 21:59:39,124 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 84 [2021-12-06 21:59:39,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:59:39,152 INFO L225 Difference]: With dead ends: 21021 [2021-12-06 21:59:39,152 INFO L226 Difference]: Without dead ends: 14178 [2021-12-06 21:59:39,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2021-12-06 21:59:39,163 INFO L933 BasicCegarLoop]: 619 mSDtfsCounter, 1474 mSDsluCounter, 1131 mSDsCounter, 0 mSdLazyCounter, 988 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1750 SdHoareTripleChecker+Invalid, 1312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 21:59:39,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1490 Valid, 1750 Invalid, 1312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 988 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 21:59:39,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14178 states. [2021-12-06 21:59:39,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14178 to 13319. [2021-12-06 21:59:39,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13319 states, 10269 states have (on average 1.2085889570552146) internal successors, (12411), 10442 states have internal predecessors, (12411), 1496 states have call successors, (1496), 1259 states have call predecessors, (1496), 1552 states have return successors, (2599), 1630 states have call predecessors, (2599), 1495 states have call successors, (2599) [2021-12-06 21:59:39,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13319 states to 13319 states and 16506 transitions. [2021-12-06 21:59:39,683 INFO L78 Accepts]: Start accepts. Automaton has 13319 states and 16506 transitions. Word has length 84 [2021-12-06 21:59:39,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:59:39,684 INFO L470 AbstractCegarLoop]: Abstraction has 13319 states and 16506 transitions. [2021-12-06 21:59:39,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 21:59:39,685 INFO L276 IsEmpty]: Start isEmpty. Operand 13319 states and 16506 transitions. [2021-12-06 21:59:39,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-06 21:59:39,694 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:59:39,694 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:59:39,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 21:59:39,694 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:59:39,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:59:39,695 INFO L85 PathProgramCache]: Analyzing trace with hash -215482833, now seen corresponding path program 1 times [2021-12-06 21:59:39,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:59:39,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203889927] [2021-12-06 21:59:39,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:59:39,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:59:39,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:39,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 21:59:39,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:39,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:59:39,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:39,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 21:59:39,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:39,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:59:39,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:39,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 21:59:39,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:39,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 21:59:39,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:39,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 21:59:39,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:39,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 21:59:39,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:39,777 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 21:59:39,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:59:39,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203889927] [2021-12-06 21:59:39,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203889927] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:59:39,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:59:39,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 21:59:39,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687584128] [2021-12-06 21:59:39,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:59:39,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 21:59:39,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:59:39,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 21:59:39,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-06 21:59:39,779 INFO L87 Difference]: Start difference. First operand 13319 states and 16506 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 21:59:40,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:59:40,898 INFO L93 Difference]: Finished difference Result 24193 states and 29825 transitions. [2021-12-06 21:59:40,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 21:59:40,898 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 93 [2021-12-06 21:59:40,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:59:40,923 INFO L225 Difference]: With dead ends: 24193 [2021-12-06 21:59:40,923 INFO L226 Difference]: Without dead ends: 11794 [2021-12-06 21:59:40,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2021-12-06 21:59:40,942 INFO L933 BasicCegarLoop]: 598 mSDtfsCounter, 1676 mSDsluCounter, 1439 mSDsCounter, 0 mSdLazyCounter, 1320 mSolverCounterSat, 319 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1718 SdHoareTripleChecker+Valid, 2037 SdHoareTripleChecker+Invalid, 1639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 319 IncrementalHoareTripleChecker+Valid, 1320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 21:59:40,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1718 Valid, 2037 Invalid, 1639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [319 Valid, 1320 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 21:59:40,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11794 states. [2021-12-06 21:59:41,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11794 to 10894. [2021-12-06 21:59:41,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10894 states, 8435 states have (on average 1.2) internal successors, (10122), 8575 states have internal predecessors, (10122), 1197 states have call successors, (1197), 1008 states have call predecessors, (1197), 1260 states have return successors, (1931), 1320 states have call predecessors, (1931), 1196 states have call successors, (1931) [2021-12-06 21:59:41,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10894 states to 10894 states and 13250 transitions. [2021-12-06 21:59:41,354 INFO L78 Accepts]: Start accepts. Automaton has 10894 states and 13250 transitions. Word has length 93 [2021-12-06 21:59:41,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:59:41,355 INFO L470 AbstractCegarLoop]: Abstraction has 10894 states and 13250 transitions. [2021-12-06 21:59:41,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 21:59:41,355 INFO L276 IsEmpty]: Start isEmpty. Operand 10894 states and 13250 transitions. [2021-12-06 21:59:41,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-06 21:59:41,363 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:59:41,363 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:59:41,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 21:59:41,363 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:59:41,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:59:41,364 INFO L85 PathProgramCache]: Analyzing trace with hash 2019952060, now seen corresponding path program 1 times [2021-12-06 21:59:41,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:59:41,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983554244] [2021-12-06 21:59:41,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:59:41,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:59:41,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:41,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 21:59:41,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:41,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:59:41,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:41,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 21:59:41,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:41,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:59:41,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:41,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 21:59:41,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:41,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 21:59:41,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:41,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 21:59:41,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:41,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 21:59:41,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:41,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 21:59:41,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:41,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 21:59:41,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:41,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 21:59:41,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:41,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:59:41,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:41,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 21:59:41,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:41,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 21:59:41,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:41,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-06 21:59:41,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:41,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-06 21:59:41,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:41,456 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-12-06 21:59:41,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:59:41,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983554244] [2021-12-06 21:59:41,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983554244] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:59:41,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986586672] [2021-12-06 21:59:41,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:59:41,457 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:59:41,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b54aa3-11ee-4e65-91fb-2f06229a4c4a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:59:41,458 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b54aa3-11ee-4e65-91fb-2f06229a4c4a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:59:41,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b54aa3-11ee-4e65-91fb-2f06229a4c4a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 21:59:41,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:41,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 21:59:41,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:59:41,663 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-06 21:59:41,663 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:59:41,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986586672] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:59:41,663 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:59:41,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2021-12-06 21:59:41,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75887448] [2021-12-06 21:59:41,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:59:41,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 21:59:41,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:59:41,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 21:59:41,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-06 21:59:41,665 INFO L87 Difference]: Start difference. First operand 10894 states and 13250 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 21:59:41,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:59:41,923 INFO L93 Difference]: Finished difference Result 16042 states and 19470 transitions. [2021-12-06 21:59:41,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 21:59:41,924 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2021-12-06 21:59:41,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:59:41,937 INFO L225 Difference]: With dead ends: 16042 [2021-12-06 21:59:41,937 INFO L226 Difference]: Without dead ends: 5460 [2021-12-06 21:59:41,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-12-06 21:59:41,952 INFO L933 BasicCegarLoop]: 561 mSDtfsCounter, 34 mSDsluCounter, 2207 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 2768 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:59:41,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 2768 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:59:41,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5460 states. [2021-12-06 21:59:42,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5460 to 5018. [2021-12-06 21:59:42,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5018 states, 4000 states have (on average 1.197) internal successors, (4788), 4038 states have internal predecessors, (4788), 499 states have call successors, (499), 402 states have call predecessors, (499), 517 states have return successors, (771), 578 states have call predecessors, (771), 498 states have call successors, (771) [2021-12-06 21:59:42,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 6058 transitions. [2021-12-06 21:59:42,135 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 6058 transitions. Word has length 145 [2021-12-06 21:59:42,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:59:42,135 INFO L470 AbstractCegarLoop]: Abstraction has 5018 states and 6058 transitions. [2021-12-06 21:59:42,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 21:59:42,135 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 6058 transitions. [2021-12-06 21:59:42,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-06 21:59:42,141 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:59:42,141 INFO L514 BasicCegarLoop]: 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] [2021-12-06 21:59:42,162 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b54aa3-11ee-4e65-91fb-2f06229a4c4a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 21:59:42,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b54aa3-11ee-4e65-91fb-2f06229a4c4a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-06 21:59:42,342 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:59:42,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:59:42,342 INFO L85 PathProgramCache]: Analyzing trace with hash 814047811, now seen corresponding path program 1 times [2021-12-06 21:59:42,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:59:42,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123210308] [2021-12-06 21:59:42,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:59:42,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:59:42,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:42,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 21:59:42,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:42,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:59:42,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:42,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 21:59:42,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:42,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 21:59:42,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:42,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 21:59:42,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:42,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:59:42,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:59:42,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123210308] [2021-12-06 21:59:42,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123210308] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:59:42,443 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:59:42,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 21:59:42,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237485371] [2021-12-06 21:59:42,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:59:42,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 21:59:42,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:59:42,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 21:59:42,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 21:59:42,445 INFO L87 Difference]: Start difference. First operand 5018 states and 6058 transitions. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 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) [2021-12-06 21:59:43,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:59:43,580 INFO L93 Difference]: Finished difference Result 5382 states and 6640 transitions. [2021-12-06 21:59:43,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 21:59:43,581 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 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 134 [2021-12-06 21:59:43,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:59:43,595 INFO L225 Difference]: With dead ends: 5382 [2021-12-06 21:59:43,596 INFO L226 Difference]: Without dead ends: 5116 [2021-12-06 21:59:43,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-06 21:59:43,599 INFO L933 BasicCegarLoop]: 600 mSDtfsCounter, 827 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 1086 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 21:59:43,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [847 Valid, 1086 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 21:59:43,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5116 states. [2021-12-06 21:59:43,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5116 to 5018. [2021-12-06 21:59:43,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5018 states, 4000 states have (on average 1.19675) internal successors, (4787), 4038 states have internal predecessors, (4787), 499 states have call successors, (499), 402 states have call predecessors, (499), 517 states have return successors, (771), 578 states have call predecessors, (771), 498 states have call successors, (771) [2021-12-06 21:59:43,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 6057 transitions. [2021-12-06 21:59:43,964 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 6057 transitions. Word has length 134 [2021-12-06 21:59:43,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:59:43,964 INFO L470 AbstractCegarLoop]: Abstraction has 5018 states and 6057 transitions. [2021-12-06 21:59:43,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 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) [2021-12-06 21:59:43,964 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 6057 transitions. [2021-12-06 21:59:43,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-06 21:59:43,969 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:59:43,969 INFO L514 BasicCegarLoop]: 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] [2021-12-06 21:59:43,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 21:59:43,969 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:59:43,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:59:43,970 INFO L85 PathProgramCache]: Analyzing trace with hash 326000705, now seen corresponding path program 1 times [2021-12-06 21:59:43,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:59:43,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640703879] [2021-12-06 21:59:43,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:59:43,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:59:43,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:44,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 21:59:44,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:44,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:59:44,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:44,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 21:59:44,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:44,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 21:59:44,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:44,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 21:59:44,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:44,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:59:44,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:59:44,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640703879] [2021-12-06 21:59:44,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640703879] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:59:44,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:59:44,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 21:59:44,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767768073] [2021-12-06 21:59:44,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:59:44,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 21:59:44,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:59:44,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 21:59:44,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 21:59:44,066 INFO L87 Difference]: Start difference. First operand 5018 states and 6057 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 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) [2021-12-06 21:59:45,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:59:45,585 INFO L93 Difference]: Finished difference Result 5746 states and 7224 transitions. [2021-12-06 21:59:45,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 21:59:45,586 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 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 134 [2021-12-06 21:59:45,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:59:45,595 INFO L225 Difference]: With dead ends: 5746 [2021-12-06 21:59:45,595 INFO L226 Difference]: Without dead ends: 5485 [2021-12-06 21:59:45,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-06 21:59:45,598 INFO L933 BasicCegarLoop]: 661 mSDtfsCounter, 1310 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 1523 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1335 SdHoareTripleChecker+Valid, 1636 SdHoareTripleChecker+Invalid, 1657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:59:45,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1335 Valid, 1636 Invalid, 1657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1523 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-06 21:59:45,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5485 states. [2021-12-06 21:59:45,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5485 to 5290. [2021-12-06 21:59:45,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5290 states, 4248 states have (on average 1.2191619585687383) internal successors, (5179), 4287 states have internal predecessors, (5179), 516 states have call successors, (516), 408 states have call predecessors, (516), 524 states have return successors, (791), 595 states have call predecessors, (791), 515 states have call successors, (791) [2021-12-06 21:59:45,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5290 states to 5290 states and 6486 transitions. [2021-12-06 21:59:45,893 INFO L78 Accepts]: Start accepts. Automaton has 5290 states and 6486 transitions. Word has length 134 [2021-12-06 21:59:45,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:59:45,893 INFO L470 AbstractCegarLoop]: Abstraction has 5290 states and 6486 transitions. [2021-12-06 21:59:45,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 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) [2021-12-06 21:59:45,894 INFO L276 IsEmpty]: Start isEmpty. Operand 5290 states and 6486 transitions. [2021-12-06 21:59:45,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-06 21:59:45,898 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:59:45,898 INFO L514 BasicCegarLoop]: 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] [2021-12-06 21:59:45,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 21:59:45,898 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:59:45,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:59:45,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1380502843, now seen corresponding path program 1 times [2021-12-06 21:59:45,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:59:45,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869608585] [2021-12-06 21:59:45,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:59:45,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:59:45,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:45,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 21:59:45,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:45,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:59:45,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:45,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 21:59:45,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:45,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 21:59:45,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:45,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 21:59:45,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:45,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:59:45,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:59:45,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869608585] [2021-12-06 21:59:45,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869608585] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:59:45,980 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:59:45,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:59:45,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381158055] [2021-12-06 21:59:45,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:59:45,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:59:45,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:59:45,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:59:45,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:59:45,981 INFO L87 Difference]: Start difference. First operand 5290 states and 6486 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-06 21:59:47,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:59:47,834 INFO L93 Difference]: Finished difference Result 6399 states and 8262 transitions. [2021-12-06 21:59:47,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 21:59:47,834 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2021-12-06 21:59:47,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:59:47,844 INFO L225 Difference]: With dead ends: 6399 [2021-12-06 21:59:47,844 INFO L226 Difference]: Without dead ends: 5866 [2021-12-06 21:59:47,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-06 21:59:47,847 INFO L933 BasicCegarLoop]: 839 mSDtfsCounter, 1323 mSDsluCounter, 1631 mSDsCounter, 0 mSdLazyCounter, 2353 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1348 SdHoareTripleChecker+Valid, 2470 SdHoareTripleChecker+Invalid, 2454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 2353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-06 21:59:47,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1348 Valid, 2470 Invalid, 2454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 2353 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-06 21:59:47,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5866 states. [2021-12-06 21:59:48,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5866 to 5543. [2021-12-06 21:59:48,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5543 states, 4477 states have (on average 1.2358722358722358) internal successors, (5533), 4517 states have internal predecessors, (5533), 533 states have call successors, (533), 414 states have call predecessors, (533), 531 states have return successors, (810), 613 states have call predecessors, (810), 532 states have call successors, (810) [2021-12-06 21:59:48,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5543 states to 5543 states and 6876 transitions. [2021-12-06 21:59:48,182 INFO L78 Accepts]: Start accepts. Automaton has 5543 states and 6876 transitions. Word has length 134 [2021-12-06 21:59:48,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:59:48,182 INFO L470 AbstractCegarLoop]: Abstraction has 5543 states and 6876 transitions. [2021-12-06 21:59:48,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-06 21:59:48,182 INFO L276 IsEmpty]: Start isEmpty. Operand 5543 states and 6876 transitions. [2021-12-06 21:59:48,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-06 21:59:48,187 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:59:48,187 INFO L514 BasicCegarLoop]: 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] [2021-12-06 21:59:48,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 21:59:48,188 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:59:48,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:59:48,188 INFO L85 PathProgramCache]: Analyzing trace with hash 621383427, now seen corresponding path program 1 times [2021-12-06 21:59:48,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:59:48,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313111309] [2021-12-06 21:59:48,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:59:48,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:59:48,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:48,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 21:59:48,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:48,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:59:48,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:48,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 21:59:48,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:48,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 21:59:48,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:48,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 21:59:48,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:48,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:59:48,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:59:48,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313111309] [2021-12-06 21:59:48,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313111309] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:59:48,270 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:59:48,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:59:48,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902358955] [2021-12-06 21:59:48,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:59:48,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:59:48,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:59:48,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:59:48,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:59:48,271 INFO L87 Difference]: Start difference. First operand 5543 states and 6876 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-06 21:59:50,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:59:50,177 INFO L93 Difference]: Finished difference Result 7361 states and 9780 transitions. [2021-12-06 21:59:50,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 21:59:50,177 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2021-12-06 21:59:50,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:59:50,200 INFO L225 Difference]: With dead ends: 7361 [2021-12-06 21:59:50,201 INFO L226 Difference]: Without dead ends: 6575 [2021-12-06 21:59:50,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-06 21:59:50,205 INFO L933 BasicCegarLoop]: 829 mSDtfsCounter, 1323 mSDsluCounter, 1627 mSDsCounter, 0 mSdLazyCounter, 2356 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1348 SdHoareTripleChecker+Valid, 2456 SdHoareTripleChecker+Invalid, 2463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 2356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-06 21:59:50,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1348 Valid, 2456 Invalid, 2463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 2356 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-06 21:59:50,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6575 states. [2021-12-06 21:59:50,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6575 to 6050. [2021-12-06 21:59:50,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6050 states, 4936 states have (on average 1.2645867098865478) internal successors, (6242), 4978 states have internal predecessors, (6242), 567 states have call successors, (567), 426 states have call predecessors, (567), 545 states have return successors, (852), 649 states have call predecessors, (852), 566 states have call successors, (852) [2021-12-06 21:59:50,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6050 states to 6050 states and 7661 transitions. [2021-12-06 21:59:50,588 INFO L78 Accepts]: Start accepts. Automaton has 6050 states and 7661 transitions. Word has length 134 [2021-12-06 21:59:50,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:59:50,588 INFO L470 AbstractCegarLoop]: Abstraction has 6050 states and 7661 transitions. [2021-12-06 21:59:50,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-06 21:59:50,588 INFO L276 IsEmpty]: Start isEmpty. Operand 6050 states and 7661 transitions. [2021-12-06 21:59:50,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-06 21:59:50,593 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:59:50,593 INFO L514 BasicCegarLoop]: 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] [2021-12-06 21:59:50,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 21:59:50,593 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:59:50,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:59:50,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1946438907, now seen corresponding path program 1 times [2021-12-06 21:59:50,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:59:50,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220895564] [2021-12-06 21:59:50,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:59:50,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:59:50,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:50,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 21:59:50,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:50,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:59:50,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:50,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 21:59:50,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:50,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 21:59:50,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:50,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 21:59:50,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:50,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:59:50,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:59:50,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220895564] [2021-12-06 21:59:50,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220895564] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:59:50,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:59:50,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:59:50,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065182716] [2021-12-06 21:59:50,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:59:50,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:59:50,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:59:50,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:59:50,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:59:50,678 INFO L87 Difference]: Start difference. First operand 6050 states and 7661 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-06 21:59:52,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:59:52,660 INFO L93 Difference]: Finished difference Result 9209 states and 12681 transitions. [2021-12-06 21:59:52,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 21:59:52,661 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2021-12-06 21:59:52,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:59:52,676 INFO L225 Difference]: With dead ends: 9209 [2021-12-06 21:59:52,676 INFO L226 Difference]: Without dead ends: 7916 [2021-12-06 21:59:52,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-06 21:59:52,681 INFO L933 BasicCegarLoop]: 821 mSDtfsCounter, 1318 mSDsluCounter, 1627 mSDsCounter, 0 mSdLazyCounter, 2336 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1343 SdHoareTripleChecker+Valid, 2448 SdHoareTripleChecker+Invalid, 2444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-06 21:59:52,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1343 Valid, 2448 Invalid, 2444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2336 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-06 21:59:52,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7916 states. [2021-12-06 21:59:53,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7916 to 7070. [2021-12-06 21:59:53,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7070 states, 5860 states have (on average 1.3088737201365188) internal successors, (7670), 5906 states have internal predecessors, (7670), 635 states have call successors, (635), 450 states have call predecessors, (635), 573 states have return successors, (942), 721 states have call predecessors, (942), 634 states have call successors, (942) [2021-12-06 21:59:53,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7070 states to 7070 states and 9247 transitions. [2021-12-06 21:59:53,077 INFO L78 Accepts]: Start accepts. Automaton has 7070 states and 9247 transitions. Word has length 134 [2021-12-06 21:59:53,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:59:53,077 INFO L470 AbstractCegarLoop]: Abstraction has 7070 states and 9247 transitions. [2021-12-06 21:59:53,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-06 21:59:53,077 INFO L276 IsEmpty]: Start isEmpty. Operand 7070 states and 9247 transitions. [2021-12-06 21:59:53,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-06 21:59:53,083 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:59:53,083 INFO L514 BasicCegarLoop]: 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] [2021-12-06 21:59:53,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 21:59:53,083 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:59:53,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:59:53,084 INFO L85 PathProgramCache]: Analyzing trace with hash 701165447, now seen corresponding path program 1 times [2021-12-06 21:59:53,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:59:53,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679066085] [2021-12-06 21:59:53,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:59:53,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:59:53,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:53,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 21:59:53,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:53,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:59:53,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:53,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 21:59:53,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:53,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 21:59:53,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:53,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 21:59:53,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:53,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:59:53,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:59:53,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679066085] [2021-12-06 21:59:53,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679066085] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:59:53,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:59:53,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:59:53,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401999857] [2021-12-06 21:59:53,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:59:53,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:59:53,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:59:53,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:59:53,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:59:53,175 INFO L87 Difference]: Start difference. First operand 7070 states and 9247 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-06 21:59:55,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:59:55,288 INFO L93 Difference]: Finished difference Result 12915 states and 18517 transitions. [2021-12-06 21:59:55,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 21:59:55,288 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2021-12-06 21:59:55,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:59:55,310 INFO L225 Difference]: With dead ends: 12915 [2021-12-06 21:59:55,310 INFO L226 Difference]: Without dead ends: 10602 [2021-12-06 21:59:55,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-06 21:59:55,316 INFO L933 BasicCegarLoop]: 816 mSDtfsCounter, 1317 mSDsluCounter, 1627 mSDsCounter, 0 mSdLazyCounter, 2328 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1342 SdHoareTripleChecker+Valid, 2443 SdHoareTripleChecker+Invalid, 2436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-06 21:59:55,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1342 Valid, 2443 Invalid, 2436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2328 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-06 21:59:55,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10602 states. [2021-12-06 21:59:55,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10602 to 9115. [2021-12-06 21:59:55,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9115 states, 7713 states have (on average 1.3654868403993259) internal successors, (10532), 7767 states have internal predecessors, (10532), 771 states have call successors, (771), 498 states have call predecessors, (771), 629 states have return successors, (1140), 865 states have call predecessors, (1140), 770 states have call successors, (1140) [2021-12-06 21:59:55,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9115 states to 9115 states and 12443 transitions. [2021-12-06 21:59:55,878 INFO L78 Accepts]: Start accepts. Automaton has 9115 states and 12443 transitions. Word has length 134 [2021-12-06 21:59:55,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:59:55,878 INFO L470 AbstractCegarLoop]: Abstraction has 9115 states and 12443 transitions. [2021-12-06 21:59:55,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-06 21:59:55,879 INFO L276 IsEmpty]: Start isEmpty. Operand 9115 states and 12443 transitions. [2021-12-06 21:59:55,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-06 21:59:55,886 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:59:55,886 INFO L514 BasicCegarLoop]: 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] [2021-12-06 21:59:55,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-06 21:59:55,886 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:59:55,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:59:55,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1430185275, now seen corresponding path program 1 times [2021-12-06 21:59:55,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:59:55,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802940061] [2021-12-06 21:59:55,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:59:55,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:59:55,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:55,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 21:59:55,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:55,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:59:55,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:55,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 21:59:55,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:55,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 21:59:55,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:55,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 21:59:55,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:55,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:59:55,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:59:55,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802940061] [2021-12-06 21:59:55,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802940061] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:59:55,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:59:55,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:59:55,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44310612] [2021-12-06 21:59:55,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:59:55,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:59:55,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:59:55,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:59:55,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:59:55,958 INFO L87 Difference]: Start difference. First operand 9115 states and 12443 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-06 21:59:57,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:59:57,387 INFO L93 Difference]: Finished difference Result 15020 states and 21898 transitions. [2021-12-06 21:59:57,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 21:59:57,387 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2021-12-06 21:59:57,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:59:57,409 INFO L225 Difference]: With dead ends: 15020 [2021-12-06 21:59:57,409 INFO L226 Difference]: Without dead ends: 10662 [2021-12-06 21:59:57,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-06 21:59:57,416 INFO L933 BasicCegarLoop]: 537 mSDtfsCounter, 1057 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 1111 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1083 SdHoareTripleChecker+Valid, 1428 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 21:59:57,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1083 Valid, 1428 Invalid, 1223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1111 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 21:59:57,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10662 states. [2021-12-06 21:59:57,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10662 to 9115. [2021-12-06 21:59:57,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9115 states, 7713 states have (on average 1.3632827693504472) internal successors, (10515), 7767 states have internal predecessors, (10515), 771 states have call successors, (771), 498 states have call predecessors, (771), 629 states have return successors, (1140), 865 states have call predecessors, (1140), 770 states have call successors, (1140) [2021-12-06 21:59:57,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9115 states to 9115 states and 12426 transitions. [2021-12-06 21:59:57,935 INFO L78 Accepts]: Start accepts. Automaton has 9115 states and 12426 transitions. Word has length 134 [2021-12-06 21:59:57,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:59:57,935 INFO L470 AbstractCegarLoop]: Abstraction has 9115 states and 12426 transitions. [2021-12-06 21:59:57,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-06 21:59:57,935 INFO L276 IsEmpty]: Start isEmpty. Operand 9115 states and 12426 transitions. [2021-12-06 21:59:57,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-06 21:59:57,942 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:59:57,942 INFO L514 BasicCegarLoop]: 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] [2021-12-06 21:59:57,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-06 21:59:57,942 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:59:57,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:59:57,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1826197447, now seen corresponding path program 1 times [2021-12-06 21:59:57,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:59:57,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533328436] [2021-12-06 21:59:57,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:59:57,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:59:57,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:57,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 21:59:57,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:57,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:59:57,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:58,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 21:59:58,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:58,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 21:59:58,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:58,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 21:59:58,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:59:58,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:59:58,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:59:58,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533328436] [2021-12-06 21:59:58,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533328436] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:59:58,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:59:58,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:59:58,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057105258] [2021-12-06 21:59:58,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:59:58,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:59:58,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:59:58,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:59:58,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:59:58,017 INFO L87 Difference]: Start difference. First operand 9115 states and 12426 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-06 22:00:00,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:00:00,408 INFO L93 Difference]: Finished difference Result 20308 states and 30127 transitions. [2021-12-06 22:00:00,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 22:00:00,409 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2021-12-06 22:00:00,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:00:00,435 INFO L225 Difference]: With dead ends: 20308 [2021-12-06 22:00:00,435 INFO L226 Difference]: Without dead ends: 15950 [2021-12-06 22:00:00,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-06 22:00:00,443 INFO L933 BasicCegarLoop]: 805 mSDtfsCounter, 1309 mSDsluCounter, 1627 mSDsCounter, 0 mSdLazyCounter, 2301 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1334 SdHoareTripleChecker+Valid, 2432 SdHoareTripleChecker+Invalid, 2409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:00:00,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1334 Valid, 2432 Invalid, 2409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2301 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-06 22:00:00,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15950 states. [2021-12-06 22:00:01,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15950 to 13237. [2021-12-06 22:00:01,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13237 states, 11451 states have (on average 1.420225307833377) internal successors, (16263), 11521 states have internal predecessors, (16263), 1043 states have call successors, (1043), 594 states have call predecessors, (1043), 741 states have return successors, (1590), 1153 states have call predecessors, (1590), 1042 states have call successors, (1590) [2021-12-06 22:00:01,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13237 states to 13237 states and 18896 transitions. [2021-12-06 22:00:01,220 INFO L78 Accepts]: Start accepts. Automaton has 13237 states and 18896 transitions. Word has length 134 [2021-12-06 22:00:01,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:00:01,221 INFO L470 AbstractCegarLoop]: Abstraction has 13237 states and 18896 transitions. [2021-12-06 22:00:01,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-06 22:00:01,221 INFO L276 IsEmpty]: Start isEmpty. Operand 13237 states and 18896 transitions. [2021-12-06 22:00:01,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-06 22:00:01,228 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:00:01,228 INFO L514 BasicCegarLoop]: 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] [2021-12-06 22:00:01,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-06 22:00:01,228 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:00:01,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:00:01,229 INFO L85 PathProgramCache]: Analyzing trace with hash -146967931, now seen corresponding path program 1 times [2021-12-06 22:00:01,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:00:01,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240219578] [2021-12-06 22:00:01,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:00:01,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:00:01,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:01,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 22:00:01,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:01,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:00:01,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:01,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 22:00:01,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:01,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 22:00:01,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:01,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 22:00:01,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:01,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:00:01,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:00:01,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240219578] [2021-12-06 22:00:01,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240219578] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:00:01,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:00:01,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:00:01,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661272565] [2021-12-06 22:00:01,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:00:01,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:00:01,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:00:01,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:00:01,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:00:01,302 INFO L87 Difference]: Start difference. First operand 13237 states and 18896 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-06 22:00:04,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:00:04,436 INFO L93 Difference]: Finished difference Result 35132 states and 53687 transitions. [2021-12-06 22:00:04,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 22:00:04,436 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2021-12-06 22:00:04,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:00:04,485 INFO L225 Difference]: With dead ends: 35132 [2021-12-06 22:00:04,485 INFO L226 Difference]: Without dead ends: 26652 [2021-12-06 22:00:04,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-06 22:00:04,503 INFO L933 BasicCegarLoop]: 800 mSDtfsCounter, 1308 mSDsluCounter, 1627 mSDsCounter, 0 mSdLazyCounter, 2293 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1333 SdHoareTripleChecker+Valid, 2427 SdHoareTripleChecker+Invalid, 2401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-06 22:00:04,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1333 Valid, 2427 Invalid, 2401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2293 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-06 22:00:04,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26652 states. [2021-12-06 22:00:05,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26652 to 21510. [2021-12-06 22:00:05,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21510 states, 18956 states have (on average 1.4666068790884152) internal successors, (27801), 19058 states have internal predecessors, (27801), 1587 states have call successors, (1587), 786 states have call predecessors, (1587), 965 states have return successors, (2652), 1729 states have call predecessors, (2652), 1586 states have call successors, (2652) [2021-12-06 22:00:05,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21510 states to 21510 states and 32040 transitions. [2021-12-06 22:00:05,824 INFO L78 Accepts]: Start accepts. Automaton has 21510 states and 32040 transitions. Word has length 134 [2021-12-06 22:00:05,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:00:05,824 INFO L470 AbstractCegarLoop]: Abstraction has 21510 states and 32040 transitions. [2021-12-06 22:00:05,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-06 22:00:05,824 INFO L276 IsEmpty]: Start isEmpty. Operand 21510 states and 32040 transitions. [2021-12-06 22:00:05,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-06 22:00:05,835 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:00:05,835 INFO L514 BasicCegarLoop]: 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] [2021-12-06 22:00:05,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-06 22:00:05,835 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:00:05,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:00:05,835 INFO L85 PathProgramCache]: Analyzing trace with hash 2006138887, now seen corresponding path program 1 times [2021-12-06 22:00:05,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:00:05,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711557513] [2021-12-06 22:00:05,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:00:05,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:00:05,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:05,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 22:00:05,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:05,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:00:05,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:05,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 22:00:05,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:05,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 22:00:05,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:05,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 22:00:05,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:05,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:00:05,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:00:05,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711557513] [2021-12-06 22:00:05,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711557513] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:00:05,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:00:05,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:00:05,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60313493] [2021-12-06 22:00:05,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:00:05,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:00:05,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:00:05,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:00:05,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:00:05,908 INFO L87 Difference]: Start difference. First operand 21510 states and 32040 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-06 22:00:11,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:00:11,746 INFO L93 Difference]: Finished difference Result 72523 states and 113183 transitions. [2021-12-06 22:00:11,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 22:00:11,747 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2021-12-06 22:00:11,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:00:11,877 INFO L225 Difference]: With dead ends: 72523 [2021-12-06 22:00:11,877 INFO L226 Difference]: Without dead ends: 55770 [2021-12-06 22:00:11,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 22:00:11,919 INFO L933 BasicCegarLoop]: 929 mSDtfsCounter, 1390 mSDsluCounter, 1619 mSDsCounter, 0 mSdLazyCounter, 2674 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1414 SdHoareTripleChecker+Valid, 2548 SdHoareTripleChecker+Invalid, 2784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 2674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-06 22:00:11,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1414 Valid, 2548 Invalid, 2784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 2674 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-06 22:00:11,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55770 states. [2021-12-06 22:00:14,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55770 to 37927. [2021-12-06 22:00:14,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37927 states, 33901 states have (on average 1.4997492699330404) internal successors, (50843), 34067 states have internal predecessors, (50843), 2611 states have call successors, (2611), 1170 states have call predecessors, (2611), 1413 states have return successors, (5198), 2817 states have call predecessors, (5198), 2610 states have call successors, (5198) [2021-12-06 22:00:14,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37927 states to 37927 states and 58652 transitions. [2021-12-06 22:00:14,551 INFO L78 Accepts]: Start accepts. Automaton has 37927 states and 58652 transitions. Word has length 134 [2021-12-06 22:00:14,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:00:14,551 INFO L470 AbstractCegarLoop]: Abstraction has 37927 states and 58652 transitions. [2021-12-06 22:00:14,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-06 22:00:14,551 INFO L276 IsEmpty]: Start isEmpty. Operand 37927 states and 58652 transitions. [2021-12-06 22:00:14,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-06 22:00:14,566 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:00:14,566 INFO L514 BasicCegarLoop]: 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] [2021-12-06 22:00:14,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-06 22:00:14,567 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:00:14,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:00:14,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1382857285, now seen corresponding path program 1 times [2021-12-06 22:00:14,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:00:14,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825977102] [2021-12-06 22:00:14,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:00:14,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:00:14,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:14,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 22:00:14,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:14,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:00:14,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:14,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 22:00:14,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:14,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 22:00:14,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:14,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 22:00:14,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:14,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:00:14,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:00:14,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825977102] [2021-12-06 22:00:14,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825977102] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:00:14,630 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:00:14,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:00:14,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905838223] [2021-12-06 22:00:14,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:00:14,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:00:14,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:00:14,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:00:14,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:00:14,631 INFO L87 Difference]: Start difference. First operand 37927 states and 58652 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-06 22:00:24,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:00:24,427 INFO L93 Difference]: Finished difference Result 137450 states and 219045 transitions. [2021-12-06 22:00:24,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 22:00:24,427 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2021-12-06 22:00:24,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:00:24,721 INFO L225 Difference]: With dead ends: 137450 [2021-12-06 22:00:24,722 INFO L226 Difference]: Without dead ends: 104280 [2021-12-06 22:00:24,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 22:00:24,810 INFO L933 BasicCegarLoop]: 785 mSDtfsCounter, 1599 mSDsluCounter, 1616 mSDsCounter, 0 mSdLazyCounter, 2266 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1633 SdHoareTripleChecker+Valid, 2401 SdHoareTripleChecker+Invalid, 2382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:00:24,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1633 Valid, 2401 Invalid, 2382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 2266 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-06 22:00:24,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104280 states. [2021-12-06 22:00:29,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104280 to 70056. [2021-12-06 22:00:29,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70056 states, 63150 states have (on average 1.5196357878068092) internal successors, (95965), 63444 states have internal predecessors, (95965), 4595 states have call successors, (4595), 1938 states have call predecessors, (4595), 2309 states have return successors, (11684), 4929 states have call predecessors, (11684), 4594 states have call successors, (11684) [2021-12-06 22:00:30,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70056 states to 70056 states and 112244 transitions. [2021-12-06 22:00:30,112 INFO L78 Accepts]: Start accepts. Automaton has 70056 states and 112244 transitions. Word has length 134 [2021-12-06 22:00:30,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:00:30,112 INFO L470 AbstractCegarLoop]: Abstraction has 70056 states and 112244 transitions. [2021-12-06 22:00:30,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-06 22:00:30,112 INFO L276 IsEmpty]: Start isEmpty. Operand 70056 states and 112244 transitions. [2021-12-06 22:00:30,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-06 22:00:30,133 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:00:30,133 INFO L514 BasicCegarLoop]: 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] [2021-12-06 22:00:30,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-06 22:00:30,133 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:00:30,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:00:30,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1501298759, now seen corresponding path program 1 times [2021-12-06 22:00:30,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:00:30,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116931084] [2021-12-06 22:00:30,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:00:30,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:00:30,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:30,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 22:00:30,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:30,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:00:30,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:30,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 22:00:30,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:30,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 22:00:30,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:30,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 22:00:30,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:30,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:00:30,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:00:30,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116931084] [2021-12-06 22:00:30,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116931084] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:00:30,199 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:00:30,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:00:30,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493201644] [2021-12-06 22:00:30,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:00:30,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:00:30,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:00:30,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:00:30,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:00:30,199 INFO L87 Difference]: Start difference. First operand 70056 states and 112244 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-06 22:00:47,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:00:47,546 INFO L93 Difference]: Finished difference Result 259175 states and 423991 transitions. [2021-12-06 22:00:47,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 22:00:47,546 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2021-12-06 22:00:47,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:00:48,186 INFO L225 Difference]: With dead ends: 259175 [2021-12-06 22:00:48,186 INFO L226 Difference]: Without dead ends: 193876 [2021-12-06 22:00:48,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 22:00:48,447 INFO L933 BasicCegarLoop]: 777 mSDtfsCounter, 1517 mSDsluCounter, 1619 mSDsCounter, 0 mSdLazyCounter, 2249 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1551 SdHoareTripleChecker+Valid, 2396 SdHoareTripleChecker+Invalid, 2365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-06 22:00:48,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1551 Valid, 2396 Invalid, 2365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 2249 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-06 22:00:48,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193876 states. [2021-12-06 22:00:58,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193876 to 135082. [2021-12-06 22:00:58,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135082 states, 122544 states have (on average 1.5331064760412587) internal successors, (187873), 123094 states have internal predecessors, (187873), 8435 states have call successors, (8435), 3474 states have call predecessors, (8435), 4101 states have return successors, (28902), 9025 states have call predecessors, (28902), 8434 states have call successors, (28902) [2021-12-06 22:00:58,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135082 states to 135082 states and 225210 transitions. [2021-12-06 22:00:58,904 INFO L78 Accepts]: Start accepts. Automaton has 135082 states and 225210 transitions. Word has length 134 [2021-12-06 22:00:58,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:00:58,905 INFO L470 AbstractCegarLoop]: Abstraction has 135082 states and 225210 transitions. [2021-12-06 22:00:58,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-06 22:00:58,905 INFO L276 IsEmpty]: Start isEmpty. Operand 135082 states and 225210 transitions. [2021-12-06 22:00:58,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-06 22:00:58,953 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:00:58,953 INFO L514 BasicCegarLoop]: 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] [2021-12-06 22:00:58,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-06 22:00:58,953 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:00:58,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:00:58,954 INFO L85 PathProgramCache]: Analyzing trace with hash -532095287, now seen corresponding path program 1 times [2021-12-06 22:00:58,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:00:58,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919647846] [2021-12-06 22:00:58,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:00:58,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:00:58,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:58,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 22:00:58,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:58,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:00:58,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:59,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 22:00:59,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:59,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 22:00:59,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:59,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 22:00:59,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:00:59,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:00:59,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:00:59,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919647846] [2021-12-06 22:00:59,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919647846] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:00:59,024 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:00:59,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:00:59,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804861066] [2021-12-06 22:00:59,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:00:59,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:00:59,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:00:59,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:00:59,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:00:59,025 INFO L87 Difference]: Start difference. First operand 135082 states and 225210 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-06 22:01:13,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:01:13,708 INFO L93 Difference]: Finished difference Result 303692 states and 524845 transitions. [2021-12-06 22:01:13,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 22:01:13,709 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2021-12-06 22:01:13,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:01:14,353 INFO L225 Difference]: With dead ends: 303692 [2021-12-06 22:01:14,353 INFO L226 Difference]: Without dead ends: 173367 [2021-12-06 22:01:14,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-06 22:01:14,664 INFO L933 BasicCegarLoop]: 538 mSDtfsCounter, 1182 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1208 SdHoareTripleChecker+Valid, 1232 SdHoareTripleChecker+Invalid, 1145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 22:01:14,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1208 Valid, 1232 Invalid, 1145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 992 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 22:01:14,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173367 states. [2021-12-06 22:01:25,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173367 to 135082. [2021-12-06 22:01:25,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135082 states, 122544 states have (on average 1.5289202245723985) internal successors, (187360), 123094 states have internal predecessors, (187360), 8435 states have call successors, (8435), 3474 states have call predecessors, (8435), 4101 states have return successors, (28902), 9025 states have call predecessors, (28902), 8434 states have call successors, (28902) [2021-12-06 22:01:25,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135082 states to 135082 states and 224697 transitions. [2021-12-06 22:01:25,652 INFO L78 Accepts]: Start accepts. Automaton has 135082 states and 224697 transitions. Word has length 134 [2021-12-06 22:01:25,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:01:25,653 INFO L470 AbstractCegarLoop]: Abstraction has 135082 states and 224697 transitions. [2021-12-06 22:01:25,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-06 22:01:25,653 INFO L276 IsEmpty]: Start isEmpty. Operand 135082 states and 224697 transitions. [2021-12-06 22:01:25,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-06 22:01:25,697 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:01:25,697 INFO L514 BasicCegarLoop]: 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] [2021-12-06 22:01:25,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-06 22:01:25,697 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:01:25,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:01:25,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1896163335, now seen corresponding path program 1 times [2021-12-06 22:01:25,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:01:25,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246148295] [2021-12-06 22:01:25,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:01:25,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:01:25,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:25,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 22:01:25,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:25,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:01:25,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:25,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 22:01:25,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:25,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 22:01:25,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:25,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 22:01:25,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:01:25,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:01:25,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:01:25,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246148295] [2021-12-06 22:01:25,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246148295] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:01:25,771 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:01:25,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:01:25,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009535339] [2021-12-06 22:01:25,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:01:25,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:01:25,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:01:25,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:01:25,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:01:25,772 INFO L87 Difference]: Start difference. First operand 135082 states and 224697 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-06 22:01:59,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:01:59,061 INFO L93 Difference]: Finished difference Result 495973 states and 838967 transitions. [2021-12-06 22:01:59,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 22:01:59,061 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2021-12-06 22:01:59,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:02:00,674 INFO L225 Difference]: With dead ends: 495973 [2021-12-06 22:02:00,675 INFO L226 Difference]: Without dead ends: 365648 [2021-12-06 22:02:01,109 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 22:02:01,109 INFO L933 BasicCegarLoop]: 674 mSDtfsCounter, 1386 mSDsluCounter, 1166 mSDsCounter, 0 mSdLazyCounter, 2254 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1410 SdHoareTripleChecker+Valid, 1840 SdHoareTripleChecker+Invalid, 2393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 2254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:02:01,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1410 Valid, 1840 Invalid, 2393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 2254 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-06 22:02:01,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365648 states. [2021-12-06 22:02:21,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365648 to 265388. [2021-12-06 22:02:22,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265388 states, 241842 states have (on average 1.5358291777276072) internal successors, (371428), 242904 states have internal predecessors, (371428), 15859 states have call successors, (15859), 6546 states have call predecessors, (15859), 7685 states have return successors, (76204), 16961 states have call predecessors, (76204), 15858 states have call successors, (76204) [2021-12-06 22:02:23,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265388 states to 265388 states and 463491 transitions. [2021-12-06 22:02:23,358 INFO L78 Accepts]: Start accepts. Automaton has 265388 states and 463491 transitions. Word has length 134 [2021-12-06 22:02:23,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:02:23,358 INFO L470 AbstractCegarLoop]: Abstraction has 265388 states and 463491 transitions. [2021-12-06 22:02:23,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-06 22:02:23,359 INFO L276 IsEmpty]: Start isEmpty. Operand 265388 states and 463491 transitions. [2021-12-06 22:02:23,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-06 22:02:23,448 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:02:23,449 INFO L514 BasicCegarLoop]: 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] [2021-12-06 22:02:23,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-06 22:02:23,449 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:02:23,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:02:23,449 INFO L85 PathProgramCache]: Analyzing trace with hash 589020937, now seen corresponding path program 1 times [2021-12-06 22:02:23,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:02:23,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728655131] [2021-12-06 22:02:23,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:02:23,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:02:23,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:02:23,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 22:02:23,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:02:23,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:02:23,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:02:23,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 22:02:23,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:02:23,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 22:02:23,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:02:23,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 22:02:23,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:02:23,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:02:23,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:02:23,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728655131] [2021-12-06 22:02:23,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728655131] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:02:23,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:02:23,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:02:23,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738322089] [2021-12-06 22:02:23,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:02:23,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:02:23,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:02:23,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:02:23,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:02:23,522 INFO L87 Difference]: Start difference. First operand 265388 states and 463491 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-06 22:03:29,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:03:29,465 INFO L93 Difference]: Finished difference Result 968293 states and 1720655 transitions. [2021-12-06 22:03:29,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 22:03:29,466 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2021-12-06 22:03:29,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:03:32,438 INFO L225 Difference]: With dead ends: 968293 [2021-12-06 22:03:32,438 INFO L226 Difference]: Without dead ends: 707662 [2021-12-06 22:03:33,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 22:03:33,417 INFO L933 BasicCegarLoop]: 761 mSDtfsCounter, 1391 mSDsluCounter, 1619 mSDsCounter, 0 mSdLazyCounter, 2214 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1425 SdHoareTripleChecker+Valid, 2380 SdHoareTripleChecker+Invalid, 2330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-06 22:03:33,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1425 Valid, 2380 Invalid, 2330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 2214 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-06 22:03:33,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707662 states. [2021-12-06 22:04:17,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707662 to 525485. [2021-12-06 22:04:17,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525485 states, 480435 states have (on average 1.5404164975490962) internal successors, (740070), 482521 states have internal predecessors, (740070), 30195 states have call successors, (30195), 12690 states have call predecessors, (30195), 14853 states have return successors, (209662), 32321 states have call predecessors, (209662), 30194 states have call successors, (209662) [2021-12-06 22:04:20,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525485 states to 525485 states and 979927 transitions. [2021-12-06 22:04:20,411 INFO L78 Accepts]: Start accepts. Automaton has 525485 states and 979927 transitions. Word has length 134 [2021-12-06 22:04:20,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:04:20,412 INFO L470 AbstractCegarLoop]: Abstraction has 525485 states and 979927 transitions. [2021-12-06 22:04:20,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-06 22:04:20,412 INFO L276 IsEmpty]: Start isEmpty. Operand 525485 states and 979927 transitions. [2021-12-06 22:04:20,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-06 22:04:20,644 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:04:20,644 INFO L514 BasicCegarLoop]: 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] [2021-12-06 22:04:20,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-06 22:04:20,644 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:04:20,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:04:20,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1808449593, now seen corresponding path program 1 times [2021-12-06 22:04:20,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:04:20,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320356511] [2021-12-06 22:04:20,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:04:20,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:04:20,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:20,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 22:04:20,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:20,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:04:20,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:20,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 22:04:20,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:20,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 22:04:20,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:20,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 22:04:20,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:04:20,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:04:20,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:04:20,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320356511] [2021-12-06 22:04:20,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320356511] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:04:20,728 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:04:20,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:04:20,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081090309] [2021-12-06 22:04:20,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:04:20,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:04:20,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:04:20,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:04:20,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:04:20,730 INFO L87 Difference]: Start difference. First operand 525485 states and 979927 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-06 22:05:25,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:05:25,061 INFO L93 Difference]: Finished difference Result 1186380 states and 2344562 transitions. [2021-12-06 22:05:25,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 22:05:25,061 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2021-12-06 22:05:25,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:05:28,207 INFO L225 Difference]: With dead ends: 1186380 [2021-12-06 22:05:28,207 INFO L226 Difference]: Without dead ends: 665652 [2021-12-06 22:05:29,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-06 22:05:29,861 INFO L933 BasicCegarLoop]: 528 mSDtfsCounter, 1013 mSDsluCounter, 890 mSDsCounter, 0 mSdLazyCounter, 1080 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1039 SdHoareTripleChecker+Valid, 1418 SdHoareTripleChecker+Invalid, 1196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:05:29,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1039 Valid, 1418 Invalid, 1196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1080 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 22:05:30,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665652 states. [2021-12-06 22:06:17,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665652 to 525485. [2021-12-06 22:06:17,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525485 states, 480435 states have (on average 1.5361516126010804) internal successors, (738021), 482521 states have internal predecessors, (738021), 30195 states have call successors, (30195), 12690 states have call predecessors, (30195), 14853 states have return successors, (209662), 32321 states have call predecessors, (209662), 30194 states have call successors, (209662) [2021-12-06 22:06:20,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525485 states to 525485 states and 977878 transitions. [2021-12-06 22:06:20,269 INFO L78 Accepts]: Start accepts. Automaton has 525485 states and 977878 transitions. Word has length 134 [2021-12-06 22:06:20,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:06:20,269 INFO L470 AbstractCegarLoop]: Abstraction has 525485 states and 977878 transitions. [2021-12-06 22:06:20,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-06 22:06:20,269 INFO L276 IsEmpty]: Start isEmpty. Operand 525485 states and 977878 transitions. [2021-12-06 22:06:20,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-06 22:06:20,462 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:06:20,462 INFO L514 BasicCegarLoop]: 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] [2021-12-06 22:06:20,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-06 22:06:20,462 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:06:20,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:06:20,463 INFO L85 PathProgramCache]: Analyzing trace with hash -777408695, now seen corresponding path program 1 times [2021-12-06 22:06:20,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:06:20,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625170906] [2021-12-06 22:06:20,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:06:20,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:06:20,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:20,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 22:06:20,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:20,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:06:20,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:20,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 22:06:20,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:20,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 22:06:20,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:20,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 22:06:20,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:20,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:06:20,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:06:20,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625170906] [2021-12-06 22:06:20,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625170906] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:06:20,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:06:20,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:06:20,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893827042] [2021-12-06 22:06:20,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:06:20,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:06:20,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:06:20,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:06:20,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:06:20,534 INFO L87 Difference]: Start difference. First operand 525485 states and 977878 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-06 22:08:31,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:08:31,035 INFO L93 Difference]: Finished difference Result 1863266 states and 3555981 transitions. [2021-12-06 22:08:31,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 22:08:31,035 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2021-12-06 22:08:31,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:08:37,435 INFO L225 Difference]: With dead ends: 1863266 [2021-12-06 22:08:37,436 INFO L226 Difference]: Without dead ends: 1342538 [2021-12-06 22:08:39,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 22:08:39,750 INFO L933 BasicCegarLoop]: 751 mSDtfsCounter, 1305 mSDsluCounter, 1619 mSDsCounter, 0 mSdLazyCounter, 2184 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1339 SdHoareTripleChecker+Valid, 2370 SdHoareTripleChecker+Invalid, 2298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 2184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:08:39,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1339 Valid, 2370 Invalid, 2298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 2184 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-06 22:08:40,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1342538 states. [2021-12-06 22:10:15,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1342538 to 1046703. [2021-12-06 22:10:16,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1046703 states, 959669 states have (on average 1.5383731265675977) internal successors, (1476329), 963803 states have internal predecessors, (1476329), 57843 states have call successors, (57843), 24978 states have call predecessors, (57843), 29189 states have return successors, (593652), 62017 states have call predecessors, (593652), 57842 states have call successors, (593652)