./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e2280b8-5116-4640-bd3f-c06e667ab244/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e2280b8-5116-4640-bd3f-c06e667ab244/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e2280b8-5116-4640-bd3f-c06e667ab244/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e2280b8-5116-4640-bd3f-c06e667ab244/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e2280b8-5116-4640-bd3f-c06e667ab244/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e2280b8-5116-4640-bd3f-c06e667ab244/bin/uautomizer-uyxdKDjOR8 --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 2218bd3b5024885ce258db0decccc6cd77d5db224efd54b84e54987ad5abfa77 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 13:52:00,417 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 13:52:00,419 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 13:52:00,437 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 13:52:00,437 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 13:52:00,438 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 13:52:00,439 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 13:52:00,440 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 13:52:00,442 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 13:52:00,443 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 13:52:00,444 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 13:52:00,445 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 13:52:00,445 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 13:52:00,446 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 13:52:00,447 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 13:52:00,448 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 13:52:00,449 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 13:52:00,450 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 13:52:00,451 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 13:52:00,453 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 13:52:00,454 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 13:52:00,455 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 13:52:00,456 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 13:52:00,457 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 13:52:00,461 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 13:52:00,461 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 13:52:00,461 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 13:52:00,462 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 13:52:00,463 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 13:52:00,463 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 13:52:00,464 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 13:52:00,464 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 13:52:00,465 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 13:52:00,466 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 13:52:00,467 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 13:52:00,467 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 13:52:00,467 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 13:52:00,468 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 13:52:00,468 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 13:52:00,469 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 13:52:00,469 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 13:52:00,470 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e2280b8-5116-4640-bd3f-c06e667ab244/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 13:52:00,491 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 13:52:00,491 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 13:52:00,492 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 13:52:00,492 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 13:52:00,492 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 13:52:00,493 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 13:52:00,493 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 13:52:00,493 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 13:52:00,493 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 13:52:00,494 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 13:52:00,494 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 13:52:00,494 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 13:52:00,494 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 13:52:00,494 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 13:52:00,494 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 13:52:00,495 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 13:52:00,495 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 13:52:00,495 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 13:52:00,495 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 13:52:00,495 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 13:52:00,495 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 13:52:00,496 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 13:52:00,496 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 13:52:00,496 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 13:52:00,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:52:00,496 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 13:52:00,496 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 13:52:00,497 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 13:52:00,497 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 13:52:00,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 13:52:00,497 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 13:52:00,497 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 13:52:00,497 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 13:52:00,498 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 13:52:00,498 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 13:52:00,498 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_7e2280b8-5116-4640-bd3f-c06e667ab244/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e2280b8-5116-4640-bd3f-c06e667ab244/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2218bd3b5024885ce258db0decccc6cd77d5db224efd54b84e54987ad5abfa77 [2022-12-13 13:52:00,688 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 13:52:00,707 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 13:52:00,709 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 13:52:00,710 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 13:52:00,710 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 13:52:00,712 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e2280b8-5116-4640-bd3f-c06e667ab244/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-12-13 13:52:03,286 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 13:52:03,486 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 13:52:03,486 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e2280b8-5116-4640-bd3f-c06e667ab244/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-12-13 13:52:03,493 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e2280b8-5116-4640-bd3f-c06e667ab244/bin/uautomizer-uyxdKDjOR8/data/85130898c/9828e488d2494c5083f6aba93273bbff/FLAG494413fcc [2022-12-13 13:52:03,891 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e2280b8-5116-4640-bd3f-c06e667ab244/bin/uautomizer-uyxdKDjOR8/data/85130898c/9828e488d2494c5083f6aba93273bbff [2022-12-13 13:52:03,896 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 13:52:03,898 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 13:52:03,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 13:52:03,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 13:52:03,904 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 13:52:03,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:52:03" (1/1) ... [2022-12-13 13:52:03,905 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26747bc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:52:03, skipping insertion in model container [2022-12-13 13:52:03,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:52:03" (1/1) ... [2022-12-13 13:52:03,912 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 13:52:03,940 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 13:52:04,081 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e2280b8-5116-4640-bd3f-c06e667ab244/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7107,7120] [2022-12-13 13:52:04,117 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:52:04,127 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 13:52:04,160 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e2280b8-5116-4640-bd3f-c06e667ab244/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7107,7120] [2022-12-13 13:52:04,182 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:52:04,194 INFO L208 MainTranslator]: Completed translation [2022-12-13 13:52:04,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:52:04 WrapperNode [2022-12-13 13:52:04,194 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 13:52:04,195 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 13:52:04,195 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 13:52:04,195 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 13:52:04,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:52:04" (1/1) ... [2022-12-13 13:52:04,209 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:52:04" (1/1) ... [2022-12-13 13:52:04,231 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 662 [2022-12-13 13:52:04,231 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 13:52:04,232 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 13:52:04,232 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 13:52:04,232 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 13:52:04,238 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:52:04" (1/1) ... [2022-12-13 13:52:04,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:52:04" (1/1) ... [2022-12-13 13:52:04,241 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:52:04" (1/1) ... [2022-12-13 13:52:04,241 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:52:04" (1/1) ... [2022-12-13 13:52:04,247 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:52:04" (1/1) ... [2022-12-13 13:52:04,250 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:52:04" (1/1) ... [2022-12-13 13:52:04,253 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:52:04" (1/1) ... [2022-12-13 13:52:04,254 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:52:04" (1/1) ... [2022-12-13 13:52:04,257 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 13:52:04,258 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 13:52:04,258 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 13:52:04,258 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 13:52:04,259 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:52:04" (1/1) ... [2022-12-13 13:52:04,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:52:04,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e2280b8-5116-4640-bd3f-c06e667ab244/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:52:04,283 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e2280b8-5116-4640-bd3f-c06e667ab244/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 13:52:04,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e2280b8-5116-4640-bd3f-c06e667ab244/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 13:52:04,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 13:52:04,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 13:52:04,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 13:52:04,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 13:52:04,426 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 13:52:04,427 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 13:52:04,909 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 13:52:04,917 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 13:52:04,917 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 13:52:04,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:52:04 BoogieIcfgContainer [2022-12-13 13:52:04,920 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 13:52:04,922 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 13:52:04,922 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 13:52:04,925 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 13:52:04,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 01:52:03" (1/3) ... [2022-12-13 13:52:04,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39b00f6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:52:04, skipping insertion in model container [2022-12-13 13:52:04,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:52:04" (2/3) ... [2022-12-13 13:52:04,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39b00f6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:52:04, skipping insertion in model container [2022-12-13 13:52:04,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:52:04" (3/3) ... [2022-12-13 13:52:04,928 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-12-13 13:52:04,945 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 13:52:04,946 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 13:52:04,997 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 13:52:05,004 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7f5032d3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 13:52:05,004 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 13:52:05,009 INFO L276 IsEmpty]: Start isEmpty. Operand has 179 states, 177 states have (on average 1.7175141242937852) internal successors, (304), 178 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:52:05,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-12-13 13:52:05,017 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:52:05,017 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:52:05,018 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:52:05,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:52:05,023 INFO L85 PathProgramCache]: Analyzing trace with hash -113151096, now seen corresponding path program 1 times [2022-12-13 13:52:05,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:52:05,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825212908] [2022-12-13 13:52:05,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:52:05,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:52:05,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:52:05,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:52:05,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:52:05,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825212908] [2022-12-13 13:52:05,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825212908] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:52:05,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:52:05,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 13:52:05,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40062092] [2022-12-13 13:52:05,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:52:05,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:52:05,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:52:05,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:52:05,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:52:05,501 INFO L87 Difference]: Start difference. First operand has 179 states, 177 states have (on average 1.7175141242937852) internal successors, (304), 178 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:52:05,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:52:05,689 INFO L93 Difference]: Finished difference Result 639 states and 1034 transitions. [2022-12-13 13:52:05,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 13:52:05,691 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-12-13 13:52:05,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:52:05,702 INFO L225 Difference]: With dead ends: 639 [2022-12-13 13:52:05,702 INFO L226 Difference]: Without dead ends: 540 [2022-12-13 13:52:05,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-12-13 13:52:05,707 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 1598 mSDsluCounter, 822 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1598 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:52:05,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1598 Valid, 1127 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:52:05,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2022-12-13 13:52:05,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 274. [2022-12-13 13:52:05,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 273 states have (on average 1.5128205128205128) internal successors, (413), 273 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:52:05,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 413 transitions. [2022-12-13 13:52:05,757 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 413 transitions. Word has length 64 [2022-12-13 13:52:05,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:52:05,757 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 413 transitions. [2022-12-13 13:52:05,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:52:05,757 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 413 transitions. [2022-12-13 13:52:05,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-13 13:52:05,758 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:52:05,758 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:52:05,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 13:52:05,759 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:52:05,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:52:05,759 INFO L85 PathProgramCache]: Analyzing trace with hash 507394196, now seen corresponding path program 1 times [2022-12-13 13:52:05,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:52:05,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107593684] [2022-12-13 13:52:05,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:52:05,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:52:05,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:52:05,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:52:05,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:52:05,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107593684] [2022-12-13 13:52:05,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107593684] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:52:05,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:52:05,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 13:52:05,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245596892] [2022-12-13 13:52:05,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:52:05,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:52:05,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:52:05,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:52:05,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:52:05,937 INFO L87 Difference]: Start difference. First operand 274 states and 413 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:52:06,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:52:06,187 INFO L93 Difference]: Finished difference Result 1012 states and 1565 transitions. [2022-12-13 13:52:06,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 13:52:06,188 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-12-13 13:52:06,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:52:06,191 INFO L225 Difference]: With dead ends: 1012 [2022-12-13 13:52:06,192 INFO L226 Difference]: Without dead ends: 800 [2022-12-13 13:52:06,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:52:06,194 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 771 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:52:06,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [771 Valid, 897 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:52:06,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2022-12-13 13:52:06,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 794. [2022-12-13 13:52:06,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 793 states have (on average 1.5359394703656999) internal successors, (1218), 793 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:52:06,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1218 transitions. [2022-12-13 13:52:06,299 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1218 transitions. Word has length 65 [2022-12-13 13:52:06,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:52:06,299 INFO L495 AbstractCegarLoop]: Abstraction has 794 states and 1218 transitions. [2022-12-13 13:52:06,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:52:06,299 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1218 transitions. [2022-12-13 13:52:06,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-12-13 13:52:06,301 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:52:06,301 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:52:06,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 13:52:06,301 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:52:06,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:52:06,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1175932082, now seen corresponding path program 1 times [2022-12-13 13:52:06,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:52:06,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678329035] [2022-12-13 13:52:06,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:52:06,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:52:06,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:52:06,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:52:06,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:52:06,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678329035] [2022-12-13 13:52:06,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678329035] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:52:06,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:52:06,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 13:52:06,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49578123] [2022-12-13 13:52:06,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:52:06,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 13:52:06,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:52:06,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 13:52:06,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:52:06,393 INFO L87 Difference]: Start difference. First operand 794 states and 1218 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:52:06,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:52:06,755 INFO L93 Difference]: Finished difference Result 2126 states and 3304 transitions. [2022-12-13 13:52:06,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 13:52:06,756 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-12-13 13:52:06,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:52:06,761 INFO L225 Difference]: With dead ends: 2126 [2022-12-13 13:52:06,761 INFO L226 Difference]: Without dead ends: 1382 [2022-12-13 13:52:06,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:52:06,763 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 1001 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1001 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 13:52:06,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1001 Valid, 246 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 13:52:06,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2022-12-13 13:52:06,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1380. [2022-12-13 13:52:06,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1380 states, 1379 states have (on average 1.5453226976069616) internal successors, (2131), 1379 states have internal predecessors, (2131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:52:06,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1380 states to 1380 states and 2131 transitions. [2022-12-13 13:52:06,871 INFO L78 Accepts]: Start accepts. Automaton has 1380 states and 2131 transitions. Word has length 66 [2022-12-13 13:52:06,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:52:06,871 INFO L495 AbstractCegarLoop]: Abstraction has 1380 states and 2131 transitions. [2022-12-13 13:52:06,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:52:06,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1380 states and 2131 transitions. [2022-12-13 13:52:06,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-12-13 13:52:06,873 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:52:06,873 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:52:06,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 13:52:06,874 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:52:06,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:52:06,874 INFO L85 PathProgramCache]: Analyzing trace with hash 195420080, now seen corresponding path program 1 times [2022-12-13 13:52:06,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:52:06,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514370503] [2022-12-13 13:52:06,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:52:06,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:52:06,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:52:06,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:52:06,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:52:06,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514370503] [2022-12-13 13:52:06,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514370503] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:52:06,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:52:06,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 13:52:06,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134361001] [2022-12-13 13:52:06,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:52:06,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 13:52:06,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:52:06,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 13:52:06,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:52:06,955 INFO L87 Difference]: Start difference. First operand 1380 states and 2131 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:52:07,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:52:07,352 INFO L93 Difference]: Finished difference Result 3712 states and 5789 transitions. [2022-12-13 13:52:07,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 13:52:07,352 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-12-13 13:52:07,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:52:07,363 INFO L225 Difference]: With dead ends: 3712 [2022-12-13 13:52:07,363 INFO L226 Difference]: Without dead ends: 2432 [2022-12-13 13:52:07,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:52:07,366 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 927 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 927 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 13:52:07,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [927 Valid, 252 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 13:52:07,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2432 states. [2022-12-13 13:52:07,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2432 to 2430. [2022-12-13 13:52:07,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2430 states, 2429 states have (on average 1.550020584602717) internal successors, (3765), 2429 states have internal predecessors, (3765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:52:07,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2430 states to 2430 states and 3765 transitions. [2022-12-13 13:52:07,574 INFO L78 Accepts]: Start accepts. Automaton has 2430 states and 3765 transitions. Word has length 66 [2022-12-13 13:52:07,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:52:07,574 INFO L495 AbstractCegarLoop]: Abstraction has 2430 states and 3765 transitions. [2022-12-13 13:52:07,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:52:07,574 INFO L276 IsEmpty]: Start isEmpty. Operand 2430 states and 3765 transitions. [2022-12-13 13:52:07,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-12-13 13:52:07,575 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:52:07,575 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:52:07,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 13:52:07,575 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:52:07,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:52:07,576 INFO L85 PathProgramCache]: Analyzing trace with hash 2140991135, now seen corresponding path program 1 times [2022-12-13 13:52:07,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:52:07,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331922669] [2022-12-13 13:52:07,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:52:07,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:52:07,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:52:07,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:52:07,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:52:07,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331922669] [2022-12-13 13:52:07,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331922669] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:52:07,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:52:07,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 13:52:07,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362485553] [2022-12-13 13:52:07,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:52:07,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 13:52:07,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:52:07,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 13:52:07,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:52:07,661 INFO L87 Difference]: Start difference. First operand 2430 states and 3765 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:52:08,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:52:08,191 INFO L93 Difference]: Finished difference Result 6933 states and 10800 transitions. [2022-12-13 13:52:08,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 13:52:08,191 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-12-13 13:52:08,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:52:08,201 INFO L225 Difference]: With dead ends: 6933 [2022-12-13 13:52:08,201 INFO L226 Difference]: Without dead ends: 4576 [2022-12-13 13:52:08,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:52:08,204 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 953 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 953 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:52:08,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [953 Valid, 250 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:52:08,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4576 states. [2022-12-13 13:52:08,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4576 to 4574. [2022-12-13 13:52:08,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4574 states, 4573 states have (on average 1.5484364749617319) internal successors, (7081), 4573 states have internal predecessors, (7081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:52:08,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4574 states to 4574 states and 7081 transitions. [2022-12-13 13:52:08,508 INFO L78 Accepts]: Start accepts. Automaton has 4574 states and 7081 transitions. Word has length 66 [2022-12-13 13:52:08,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:52:08,508 INFO L495 AbstractCegarLoop]: Abstraction has 4574 states and 7081 transitions. [2022-12-13 13:52:08,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:52:08,508 INFO L276 IsEmpty]: Start isEmpty. Operand 4574 states and 7081 transitions. [2022-12-13 13:52:08,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-12-13 13:52:08,509 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:52:08,509 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:52:08,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 13:52:08,509 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:52:08,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:52:08,510 INFO L85 PathProgramCache]: Analyzing trace with hash -472666691, now seen corresponding path program 1 times [2022-12-13 13:52:08,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:52:08,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573317130] [2022-12-13 13:52:08,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:52:08,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:52:08,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:52:08,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:52:08,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:52:08,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573317130] [2022-12-13 13:52:08,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573317130] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:52:08,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:52:08,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 13:52:08,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116481930] [2022-12-13 13:52:08,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:52:08,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 13:52:08,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:52:08,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 13:52:08,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:52:08,584 INFO L87 Difference]: Start difference. First operand 4574 states and 7081 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:52:09,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:52:09,420 INFO L93 Difference]: Finished difference Result 13472 states and 20916 transitions. [2022-12-13 13:52:09,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 13:52:09,421 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-12-13 13:52:09,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:52:09,438 INFO L225 Difference]: With dead ends: 13472 [2022-12-13 13:52:09,438 INFO L226 Difference]: Without dead ends: 8932 [2022-12-13 13:52:09,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:52:09,444 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 1013 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 13:52:09,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1013 Valid, 244 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 13:52:09,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8932 states. [2022-12-13 13:52:10,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8932 to 8930. [2022-12-13 13:52:10,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8930 states, 8929 states have (on average 1.540822040542054) internal successors, (13758), 8929 states have internal predecessors, (13758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:52:10,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8930 states to 8930 states and 13758 transitions. [2022-12-13 13:52:10,245 INFO L78 Accepts]: Start accepts. Automaton has 8930 states and 13758 transitions. Word has length 66 [2022-12-13 13:52:10,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:52:10,245 INFO L495 AbstractCegarLoop]: Abstraction has 8930 states and 13758 transitions. [2022-12-13 13:52:10,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:52:10,246 INFO L276 IsEmpty]: Start isEmpty. Operand 8930 states and 13758 transitions. [2022-12-13 13:52:10,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-12-13 13:52:10,247 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:52:10,247 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:52:10,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 13:52:10,247 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:52:10,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:52:10,247 INFO L85 PathProgramCache]: Analyzing trace with hash 545251456, now seen corresponding path program 1 times [2022-12-13 13:52:10,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:52:10,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448552665] [2022-12-13 13:52:10,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:52:10,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:52:10,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:52:10,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:52:10,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:52:10,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448552665] [2022-12-13 13:52:10,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448552665] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:52:10,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:52:10,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 13:52:10,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085546310] [2022-12-13 13:52:10,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:52:10,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 13:52:10,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:52:10,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 13:52:10,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:52:10,403 INFO L87 Difference]: Start difference. First operand 8930 states and 13758 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:52:11,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:52:11,772 INFO L93 Difference]: Finished difference Result 17508 states and 26911 transitions. [2022-12-13 13:52:11,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 13:52:11,773 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-12-13 13:52:11,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:52:11,810 INFO L225 Difference]: With dead ends: 17508 [2022-12-13 13:52:11,810 INFO L226 Difference]: Without dead ends: 17506 [2022-12-13 13:52:11,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:52:11,815 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 246 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:52:11,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 987 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:52:11,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17506 states. [2022-12-13 13:52:12,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17506 to 9186. [2022-12-13 13:52:12,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9186 states, 9185 states have (on average 1.5257485029940119) internal successors, (14014), 9185 states have internal predecessors, (14014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:52:12,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9186 states to 9186 states and 14014 transitions. [2022-12-13 13:52:12,787 INFO L78 Accepts]: Start accepts. Automaton has 9186 states and 14014 transitions. Word has length 67 [2022-12-13 13:52:12,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:52:12,787 INFO L495 AbstractCegarLoop]: Abstraction has 9186 states and 14014 transitions. [2022-12-13 13:52:12,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:52:12,787 INFO L276 IsEmpty]: Start isEmpty. Operand 9186 states and 14014 transitions. [2022-12-13 13:52:12,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-12-13 13:52:12,789 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:52:12,789 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:52:12,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 13:52:12,790 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:52:12,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:52:12,790 INFO L85 PathProgramCache]: Analyzing trace with hash 2333062, now seen corresponding path program 1 times [2022-12-13 13:52:12,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:52:12,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393234612] [2022-12-13 13:52:12,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:52:12,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:52:12,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:52:12,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:52:12,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:52:12,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393234612] [2022-12-13 13:52:12,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393234612] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:52:12,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:52:12,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 13:52:12,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944012826] [2022-12-13 13:52:12,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:52:12,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 13:52:12,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:52:12,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 13:52:12,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-12-13 13:52:12,978 INFO L87 Difference]: Start difference. First operand 9186 states and 14014 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:52:17,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:52:17,422 INFO L93 Difference]: Finished difference Result 41173 states and 62279 transitions. [2022-12-13 13:52:17,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-13 13:52:17,423 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-12-13 13:52:17,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:52:17,475 INFO L225 Difference]: With dead ends: 41173 [2022-12-13 13:52:17,475 INFO L226 Difference]: Without dead ends: 35359 [2022-12-13 13:52:17,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2022-12-13 13:52:17,484 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 1725 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1725 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 13:52:17,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1725 Valid, 1151 Invalid, 951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 13:52:17,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35359 states. [2022-12-13 13:52:18,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35359 to 9319. [2022-12-13 13:52:18,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9319 states, 9318 states have (on average 1.5227516634470917) internal successors, (14189), 9318 states have internal predecessors, (14189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:52:18,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9319 states to 9319 states and 14189 transitions. [2022-12-13 13:52:18,709 INFO L78 Accepts]: Start accepts. Automaton has 9319 states and 14189 transitions. Word has length 68 [2022-12-13 13:52:18,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:52:18,710 INFO L495 AbstractCegarLoop]: Abstraction has 9319 states and 14189 transitions. [2022-12-13 13:52:18,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:52:18,710 INFO L276 IsEmpty]: Start isEmpty. Operand 9319 states and 14189 transitions. [2022-12-13 13:52:18,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-12-13 13:52:18,712 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:52:18,712 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:52:18,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 13:52:18,712 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:52:18,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:52:18,713 INFO L85 PathProgramCache]: Analyzing trace with hash -371480250, now seen corresponding path program 1 times [2022-12-13 13:52:18,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:52:18,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808528927] [2022-12-13 13:52:18,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:52:18,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:52:18,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:52:19,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:52:19,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:52:19,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808528927] [2022-12-13 13:52:19,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808528927] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:52:19,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:52:19,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 13:52:19,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037250377] [2022-12-13 13:52:19,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:52:19,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 13:52:19,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:52:19,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 13:52:19,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-12-13 13:52:19,002 INFO L87 Difference]: Start difference. First operand 9319 states and 14189 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:52:24,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:52:24,238 INFO L93 Difference]: Finished difference Result 31054 states and 47033 transitions. [2022-12-13 13:52:24,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 13:52:24,239 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-12-13 13:52:24,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:52:24,277 INFO L225 Difference]: With dead ends: 31054 [2022-12-13 13:52:24,277 INFO L226 Difference]: Without dead ends: 29747 [2022-12-13 13:52:24,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2022-12-13 13:52:24,284 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 1800 mSDsluCounter, 1516 mSDsCounter, 0 mSdLazyCounter, 1376 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1800 SdHoareTripleChecker+Valid, 1764 SdHoareTripleChecker+Invalid, 1386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 13:52:24,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1800 Valid, 1764 Invalid, 1386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1376 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 13:52:24,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29747 states. [2022-12-13 13:52:25,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29747 to 9319. [2022-12-13 13:52:25,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9319 states, 9318 states have (on average 1.522537025112685) internal successors, (14187), 9318 states have internal predecessors, (14187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:52:25,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9319 states to 9319 states and 14187 transitions. [2022-12-13 13:52:25,621 INFO L78 Accepts]: Start accepts. Automaton has 9319 states and 14187 transitions. Word has length 68 [2022-12-13 13:52:25,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:52:25,621 INFO L495 AbstractCegarLoop]: Abstraction has 9319 states and 14187 transitions. [2022-12-13 13:52:25,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:52:25,621 INFO L276 IsEmpty]: Start isEmpty. Operand 9319 states and 14187 transitions. [2022-12-13 13:52:25,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-12-13 13:52:25,623 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:52:25,623 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:52:25,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 13:52:25,623 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:52:25,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:52:25,624 INFO L85 PathProgramCache]: Analyzing trace with hash 2100624742, now seen corresponding path program 1 times [2022-12-13 13:52:25,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:52:25,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372372766] [2022-12-13 13:52:25,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:52:25,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:52:25,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:52:25,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:52:25,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:52:25,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372372766] [2022-12-13 13:52:25,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372372766] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:52:25,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:52:25,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 13:52:25,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284261394] [2022-12-13 13:52:25,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:52:25,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 13:52:25,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:52:25,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 13:52:25,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-12-13 13:52:25,791 INFO L87 Difference]: Start difference. First operand 9319 states and 14187 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:52:31,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:52:31,311 INFO L93 Difference]: Finished difference Result 33277 states and 50298 transitions. [2022-12-13 13:52:31,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-13 13:52:31,312 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-12-13 13:52:31,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:52:31,347 INFO L225 Difference]: With dead ends: 33277 [2022-12-13 13:52:31,347 INFO L226 Difference]: Without dead ends: 29700 [2022-12-13 13:52:31,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2022-12-13 13:52:31,355 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 1817 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 1028 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1817 SdHoareTripleChecker+Valid, 1263 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 13:52:31,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1817 Valid, 1263 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1028 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 13:52:31,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29700 states. [2022-12-13 13:52:32,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29700 to 9542. [2022-12-13 13:52:32,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9542 states, 9541 states have (on average 1.5182894874751074) internal successors, (14486), 9541 states have internal predecessors, (14486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:52:32,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9542 states to 9542 states and 14486 transitions. [2022-12-13 13:52:32,960 INFO L78 Accepts]: Start accepts. Automaton has 9542 states and 14486 transitions. Word has length 68 [2022-12-13 13:52:32,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:52:32,960 INFO L495 AbstractCegarLoop]: Abstraction has 9542 states and 14486 transitions. [2022-12-13 13:52:32,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:52:32,960 INFO L276 IsEmpty]: Start isEmpty. Operand 9542 states and 14486 transitions. [2022-12-13 13:52:32,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-12-13 13:52:32,963 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:52:32,963 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:52:32,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 13:52:32,964 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:52:32,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:52:32,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1059619418, now seen corresponding path program 1 times [2022-12-13 13:52:32,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:52:32,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117095400] [2022-12-13 13:52:32,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:52:32,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:52:32,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:52:33,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:52:33,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:52:33,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117095400] [2022-12-13 13:52:33,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117095400] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:52:33,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:52:33,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 13:52:33,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315456986] [2022-12-13 13:52:33,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:52:33,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 13:52:33,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:52:33,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 13:52:33,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-12-13 13:52:33,207 INFO L87 Difference]: Start difference. First operand 9542 states and 14486 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:52:40,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:52:40,614 INFO L93 Difference]: Finished difference Result 42240 states and 63609 transitions. [2022-12-13 13:52:40,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-13 13:52:40,614 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-12-13 13:52:40,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:52:40,652 INFO L225 Difference]: With dead ends: 42240 [2022-12-13 13:52:40,652 INFO L226 Difference]: Without dead ends: 33381 [2022-12-13 13:52:40,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2022-12-13 13:52:40,663 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 1997 mSDsluCounter, 1643 mSDsCounter, 0 mSdLazyCounter, 1571 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1997 SdHoareTripleChecker+Valid, 1914 SdHoareTripleChecker+Invalid, 1582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 13:52:40,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1997 Valid, 1914 Invalid, 1582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1571 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-13 13:52:40,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33381 states. [2022-12-13 13:52:42,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33381 to 9676. [2022-12-13 13:52:42,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9676 states, 9675 states have (on average 1.5121447028423773) internal successors, (14630), 9675 states have internal predecessors, (14630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:52:42,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9676 states to 9676 states and 14630 transitions. [2022-12-13 13:52:42,606 INFO L78 Accepts]: Start accepts. Automaton has 9676 states and 14630 transitions. Word has length 68 [2022-12-13 13:52:42,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:52:42,606 INFO L495 AbstractCegarLoop]: Abstraction has 9676 states and 14630 transitions. [2022-12-13 13:52:42,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:52:42,606 INFO L276 IsEmpty]: Start isEmpty. Operand 9676 states and 14630 transitions. [2022-12-13 13:52:42,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-13 13:52:42,608 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:52:42,608 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:52:42,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 13:52:42,608 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:52:42,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:52:42,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1047773961, now seen corresponding path program 1 times [2022-12-13 13:52:42,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:52:42,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271259017] [2022-12-13 13:52:42,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:52:42,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:52:42,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:52:42,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:52:42,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:52:42,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271259017] [2022-12-13 13:52:42,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271259017] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:52:42,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:52:42,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 13:52:42,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127546442] [2022-12-13 13:52:42,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:52:42,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:52:42,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:52:42,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:52:42,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:52:42,734 INFO L87 Difference]: Start difference. First operand 9676 states and 14630 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:52:46,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:52:46,585 INFO L93 Difference]: Finished difference Result 25520 states and 38764 transitions. [2022-12-13 13:52:46,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 13:52:46,586 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-12-13 13:52:46,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:52:46,604 INFO L225 Difference]: With dead ends: 25520 [2022-12-13 13:52:46,604 INFO L226 Difference]: Without dead ends: 16942 [2022-12-13 13:52:46,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:52:46,611 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 170 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:52:46,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 605 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:52:46,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16942 states. [2022-12-13 13:52:49,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16942 to 16820. [2022-12-13 13:52:49,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16820 states, 16819 states have (on average 1.5012783161900232) internal successors, (25250), 16819 states have internal predecessors, (25250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:52:49,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16820 states to 16820 states and 25250 transitions. [2022-12-13 13:52:49,991 INFO L78 Accepts]: Start accepts. Automaton has 16820 states and 25250 transitions. Word has length 69 [2022-12-13 13:52:49,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:52:49,991 INFO L495 AbstractCegarLoop]: Abstraction has 16820 states and 25250 transitions. [2022-12-13 13:52:49,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:52:49,991 INFO L276 IsEmpty]: Start isEmpty. Operand 16820 states and 25250 transitions. [2022-12-13 13:52:49,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-13 13:52:49,993 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:52:49,993 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:52:49,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 13:52:49,993 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:52:49,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:52:49,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1802228217, now seen corresponding path program 1 times [2022-12-13 13:52:49,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:52:49,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432428582] [2022-12-13 13:52:49,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:52:49,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:52:50,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:52:50,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:52:50,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:52:50,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432428582] [2022-12-13 13:52:50,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432428582] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:52:50,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:52:50,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:52:50,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435267842] [2022-12-13 13:52:50,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:52:50,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:52:50,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:52:50,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:52:50,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:52:50,023 INFO L87 Difference]: Start difference. First operand 16820 states and 25250 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:52:54,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:52:54,477 INFO L93 Difference]: Finished difference Result 29184 states and 43867 transitions. [2022-12-13 13:52:54,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:52:54,478 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-12-13 13:52:54,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:52:54,497 INFO L225 Difference]: With dead ends: 29184 [2022-12-13 13:52:54,497 INFO L226 Difference]: Without dead ends: 20218 [2022-12-13 13:52:54,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:52:54,505 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 156 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:52:54,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 480 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:52:54,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20218 states. [2022-12-13 13:52:58,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20218 to 19984. [2022-12-13 13:52:58,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19984 states, 19983 states have (on average 1.4800580493419406) internal successors, (29576), 19983 states have internal predecessors, (29576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:52:58,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19984 states to 19984 states and 29576 transitions. [2022-12-13 13:52:58,706 INFO L78 Accepts]: Start accepts. Automaton has 19984 states and 29576 transitions. Word has length 69 [2022-12-13 13:52:58,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:52:58,706 INFO L495 AbstractCegarLoop]: Abstraction has 19984 states and 29576 transitions. [2022-12-13 13:52:58,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:52:58,707 INFO L276 IsEmpty]: Start isEmpty. Operand 19984 states and 29576 transitions. [2022-12-13 13:52:58,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-13 13:52:58,708 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:52:58,708 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:52:58,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 13:52:58,708 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:52:58,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:52:58,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1041130329, now seen corresponding path program 1 times [2022-12-13 13:52:58,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:52:58,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221025606] [2022-12-13 13:52:58,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:52:58,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:52:58,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:52:58,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:52:58,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:52:58,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221025606] [2022-12-13 13:52:58,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221025606] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:52:58,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:52:58,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:52:58,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183384229] [2022-12-13 13:52:58,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:52:58,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:52:58,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:52:58,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:52:58,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:52:58,740 INFO L87 Difference]: Start difference. First operand 19984 states and 29576 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:53:05,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:53:05,991 INFO L93 Difference]: Finished difference Result 50136 states and 74406 transitions. [2022-12-13 13:53:05,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:53:05,991 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-12-13 13:53:05,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:53:06,026 INFO L225 Difference]: With dead ends: 50136 [2022-12-13 13:53:06,026 INFO L226 Difference]: Without dead ends: 33658 [2022-12-13 13:53:06,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:53:06,040 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 175 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:53:06,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 466 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:53:06,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33658 states. [2022-12-13 13:53:13,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33658 to 33592. [2022-12-13 13:53:13,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33592 states, 33591 states have (on average 1.4715251108927987) internal successors, (49430), 33591 states have internal predecessors, (49430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:53:13,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33592 states to 33592 states and 49430 transitions. [2022-12-13 13:53:13,663 INFO L78 Accepts]: Start accepts. Automaton has 33592 states and 49430 transitions. Word has length 69 [2022-12-13 13:53:13,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:53:13,663 INFO L495 AbstractCegarLoop]: Abstraction has 33592 states and 49430 transitions. [2022-12-13 13:53:13,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:53:13,663 INFO L276 IsEmpty]: Start isEmpty. Operand 33592 states and 49430 transitions. [2022-12-13 13:53:13,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-13 13:53:13,665 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:53:13,665 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:53:13,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 13:53:13,665 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:53:13,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:53:13,666 INFO L85 PathProgramCache]: Analyzing trace with hash -933815240, now seen corresponding path program 1 times [2022-12-13 13:53:13,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:53:13,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551884531] [2022-12-13 13:53:13,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:53:13,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:53:13,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:53:13,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:53:13,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:53:13,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551884531] [2022-12-13 13:53:13,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551884531] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:53:13,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:53:13,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:53:13,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189588081] [2022-12-13 13:53:13,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:53:13,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:53:13,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:53:13,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:53:13,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:53:13,693 INFO L87 Difference]: Start difference. First operand 33592 states and 49430 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:53:21,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:53:21,497 INFO L93 Difference]: Finished difference Result 46445 states and 68037 transitions. [2022-12-13 13:53:21,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:53:21,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-12-13 13:53:21,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:53:21,532 INFO L225 Difference]: With dead ends: 46445 [2022-12-13 13:53:21,532 INFO L226 Difference]: Without dead ends: 34325 [2022-12-13 13:53:21,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:53:21,542 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 144 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:53:21,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 466 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:53:21,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34325 states. [2022-12-13 13:53:29,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34325 to 30847. [2022-12-13 13:53:29,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30847 states, 30846 states have (on average 1.4431692926149258) internal successors, (44516), 30846 states have internal predecessors, (44516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:53:29,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30847 states to 30847 states and 44516 transitions. [2022-12-13 13:53:29,243 INFO L78 Accepts]: Start accepts. Automaton has 30847 states and 44516 transitions. Word has length 69 [2022-12-13 13:53:29,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:53:29,244 INFO L495 AbstractCegarLoop]: Abstraction has 30847 states and 44516 transitions. [2022-12-13 13:53:29,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:53:29,244 INFO L276 IsEmpty]: Start isEmpty. Operand 30847 states and 44516 transitions. [2022-12-13 13:53:29,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-13 13:53:29,245 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:53:29,246 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:53:29,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 13:53:29,246 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:53:29,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:53:29,246 INFO L85 PathProgramCache]: Analyzing trace with hash 804290264, now seen corresponding path program 1 times [2022-12-13 13:53:29,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:53:29,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188344962] [2022-12-13 13:53:29,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:53:29,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:53:29,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:53:29,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:53:29,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:53:29,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188344962] [2022-12-13 13:53:29,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188344962] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:53:29,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:53:29,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:53:29,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028963670] [2022-12-13 13:53:29,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:53:29,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:53:29,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:53:29,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:53:29,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:53:29,284 INFO L87 Difference]: Start difference. First operand 30847 states and 44516 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:53:39,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:53:39,493 INFO L93 Difference]: Finished difference Result 60636 states and 87270 transitions. [2022-12-13 13:53:39,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:53:39,494 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-12-13 13:53:39,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:53:39,531 INFO L225 Difference]: With dead ends: 60636 [2022-12-13 13:53:39,531 INFO L226 Difference]: Without dead ends: 33744 [2022-12-13 13:53:39,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:53:39,548 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 162 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:53:39,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 556 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:53:39,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33744 states. [2022-12-13 13:53:48,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33744 to 33426. [2022-12-13 13:53:48,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33426 states, 33425 states have (on average 1.4062228870605833) internal successors, (47003), 33425 states have internal predecessors, (47003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:53:48,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33426 states to 33426 states and 47003 transitions. [2022-12-13 13:53:48,409 INFO L78 Accepts]: Start accepts. Automaton has 33426 states and 47003 transitions. Word has length 69 [2022-12-13 13:53:48,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:53:48,410 INFO L495 AbstractCegarLoop]: Abstraction has 33426 states and 47003 transitions. [2022-12-13 13:53:48,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:53:48,410 INFO L276 IsEmpty]: Start isEmpty. Operand 33426 states and 47003 transitions. [2022-12-13 13:53:48,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-12-13 13:53:48,411 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:53:48,411 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:53:48,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 13:53:48,412 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:53:48,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:53:48,412 INFO L85 PathProgramCache]: Analyzing trace with hash -77781245, now seen corresponding path program 1 times [2022-12-13 13:53:48,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:53:48,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321101847] [2022-12-13 13:53:48,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:53:48,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:53:48,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:53:48,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:53:48,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:53:48,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321101847] [2022-12-13 13:53:48,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321101847] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:53:48,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:53:48,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 13:53:48,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207461200] [2022-12-13 13:53:48,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:53:48,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:53:48,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:53:48,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:53:48,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:53:48,479 INFO L87 Difference]: Start difference. First operand 33426 states and 47003 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:54:03,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:54:03,562 INFO L93 Difference]: Finished difference Result 69852 states and 99129 transitions. [2022-12-13 13:54:03,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 13:54:03,562 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-12-13 13:54:03,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:54:03,630 INFO L225 Difference]: With dead ends: 69852 [2022-12-13 13:54:03,630 INFO L226 Difference]: Without dead ends: 56383 [2022-12-13 13:54:03,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-12-13 13:54:03,647 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 1090 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1090 SdHoareTripleChecker+Valid, 1139 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:54:03,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1090 Valid, 1139 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:54:03,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56383 states. [2022-12-13 13:54:16,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56383 to 45616. [2022-12-13 13:54:16,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45616 states, 45615 states have (on average 1.4066863970185246) internal successors, (64166), 45615 states have internal predecessors, (64166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:54:16,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45616 states to 45616 states and 64166 transitions. [2022-12-13 13:54:16,299 INFO L78 Accepts]: Start accepts. Automaton has 45616 states and 64166 transitions. Word has length 70 [2022-12-13 13:54:16,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:54:16,299 INFO L495 AbstractCegarLoop]: Abstraction has 45616 states and 64166 transitions. [2022-12-13 13:54:16,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:54:16,299 INFO L276 IsEmpty]: Start isEmpty. Operand 45616 states and 64166 transitions. [2022-12-13 13:54:16,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-12-13 13:54:16,301 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:54:16,301 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:54:16,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 13:54:16,301 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:54:16,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:54:16,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1497723701, now seen corresponding path program 1 times [2022-12-13 13:54:16,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:54:16,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684245509] [2022-12-13 13:54:16,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:54:16,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:54:16,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:54:16,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:54:16,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:54:16,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684245509] [2022-12-13 13:54:16,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684245509] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:54:16,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:54:16,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 13:54:16,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880997618] [2022-12-13 13:54:16,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:54:16,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:54:16,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:54:16,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:54:16,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:54:16,361 INFO L87 Difference]: Start difference. First operand 45616 states and 64166 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:54:34,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:54:34,283 INFO L93 Difference]: Finished difference Result 69167 states and 97864 transitions. [2022-12-13 13:54:34,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 13:54:34,284 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-12-13 13:54:34,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:54:34,360 INFO L225 Difference]: With dead ends: 69167 [2022-12-13 13:54:34,360 INFO L226 Difference]: Without dead ends: 65178 [2022-12-13 13:54:34,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-12-13 13:54:34,374 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 1113 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1113 SdHoareTripleChecker+Valid, 1206 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:54:34,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1113 Valid, 1206 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:54:34,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65178 states. [2022-12-13 13:54:48,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65178 to 49543. [2022-12-13 13:54:48,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49543 states, 49542 states have (on average 1.4070283799604375) internal successors, (69707), 49542 states have internal predecessors, (69707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:54:48,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49543 states to 49543 states and 69707 transitions. [2022-12-13 13:54:48,231 INFO L78 Accepts]: Start accepts. Automaton has 49543 states and 69707 transitions. Word has length 70 [2022-12-13 13:54:48,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:54:48,231 INFO L495 AbstractCegarLoop]: Abstraction has 49543 states and 69707 transitions. [2022-12-13 13:54:48,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:54:48,231 INFO L276 IsEmpty]: Start isEmpty. Operand 49543 states and 69707 transitions. [2022-12-13 13:54:48,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-12-13 13:54:48,233 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:54:48,233 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:54:48,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 13:54:48,233 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:54:48,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:54:48,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1024658010, now seen corresponding path program 1 times [2022-12-13 13:54:48,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:54:48,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805523582] [2022-12-13 13:54:48,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:54:48,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:54:48,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:54:48,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:54:48,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:54:48,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805523582] [2022-12-13 13:54:48,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805523582] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:54:48,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:54:48,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 13:54:48,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427265327] [2022-12-13 13:54:48,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:54:48,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:54:48,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:54:48,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:54:48,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:54:48,296 INFO L87 Difference]: Start difference. First operand 49543 states and 69707 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:55:07,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:55:07,738 INFO L93 Difference]: Finished difference Result 77829 states and 110164 transitions. [2022-12-13 13:55:07,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 13:55:07,739 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-12-13 13:55:07,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:55:07,821 INFO L225 Difference]: With dead ends: 77829 [2022-12-13 13:55:07,821 INFO L226 Difference]: Without dead ends: 69004 [2022-12-13 13:55:07,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-12-13 13:55:07,837 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 1037 mSDsluCounter, 963 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1037 SdHoareTripleChecker+Valid, 1343 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:55:07,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1037 Valid, 1343 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:55:07,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69004 states. [2022-12-13 13:55:23,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69004 to 55126. [2022-12-13 13:55:23,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55126 states, 55125 states have (on average 1.409015873015873) internal successors, (77672), 55125 states have internal predecessors, (77672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:55:23,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55126 states to 55126 states and 77672 transitions. [2022-12-13 13:55:23,571 INFO L78 Accepts]: Start accepts. Automaton has 55126 states and 77672 transitions. Word has length 70 [2022-12-13 13:55:23,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:55:23,572 INFO L495 AbstractCegarLoop]: Abstraction has 55126 states and 77672 transitions. [2022-12-13 13:55:23,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:55:23,572 INFO L276 IsEmpty]: Start isEmpty. Operand 55126 states and 77672 transitions. [2022-12-13 13:55:23,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-12-13 13:55:23,574 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:55:23,574 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:55:23,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 13:55:23,574 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:55:23,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:55:23,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1354981296, now seen corresponding path program 1 times [2022-12-13 13:55:23,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:55:23,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284543530] [2022-12-13 13:55:23,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:55:23,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:55:23,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:55:23,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:55:23,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:55:23,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284543530] [2022-12-13 13:55:23,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284543530] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:55:23,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:55:23,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 13:55:23,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312014001] [2022-12-13 13:55:23,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:55:23,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:55:23,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:55:23,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:55:23,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:55:23,633 INFO L87 Difference]: Start difference. First operand 55126 states and 77672 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:55:46,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:55:46,839 INFO L93 Difference]: Finished difference Result 91888 states and 130212 transitions. [2022-12-13 13:55:46,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 13:55:46,840 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-12-13 13:55:46,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:55:46,939 INFO L225 Difference]: With dead ends: 91888 [2022-12-13 13:55:46,939 INFO L226 Difference]: Without dead ends: 79192 [2022-12-13 13:55:46,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-12-13 13:55:46,958 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 1094 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1094 SdHoareTripleChecker+Valid, 1316 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:55:46,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1094 Valid, 1316 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:55:47,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79192 states. [2022-12-13 13:56:05,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79192 to 61427. [2022-12-13 13:56:05,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61427 states, 61426 states have (on average 1.4104613681502947) internal successors, (86639), 61426 states have internal predecessors, (86639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:56:05,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61427 states to 61427 states and 86639 transitions. [2022-12-13 13:56:05,117 INFO L78 Accepts]: Start accepts. Automaton has 61427 states and 86639 transitions. Word has length 70 [2022-12-13 13:56:05,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:56:05,117 INFO L495 AbstractCegarLoop]: Abstraction has 61427 states and 86639 transitions. [2022-12-13 13:56:05,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:56:05,117 INFO L276 IsEmpty]: Start isEmpty. Operand 61427 states and 86639 transitions. [2022-12-13 13:56:05,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-12-13 13:56:05,120 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:56:05,120 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:56:05,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 13:56:05,120 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:56:05,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:56:05,121 INFO L85 PathProgramCache]: Analyzing trace with hash 143463778, now seen corresponding path program 1 times [2022-12-13 13:56:05,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:56:05,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066540547] [2022-12-13 13:56:05,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:56:05,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:56:05,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:05,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:56:05,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:56:05,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066540547] [2022-12-13 13:56:05,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066540547] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:56:05,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:56:05,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 13:56:05,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642748882] [2022-12-13 13:56:05,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:56:05,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:56:05,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:56:05,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:56:05,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:56:05,183 INFO L87 Difference]: Start difference. First operand 61427 states and 86639 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:57:16,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:57:16,994 INFO L93 Difference]: Finished difference Result 246083 states and 344909 transitions. [2022-12-13 13:57:16,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 13:57:16,994 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-12-13 13:57:16,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:57:17,349 INFO L225 Difference]: With dead ends: 246083 [2022-12-13 13:57:17,349 INFO L226 Difference]: Without dead ends: 223625 [2022-12-13 13:57:17,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-12-13 13:57:17,401 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 2976 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2976 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 13:57:17,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2976 Valid, 536 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 13:57:17,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223625 states. [2022-12-13 13:57:38,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223625 to 61531. [2022-12-13 13:57:38,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61531 states, 61530 states have (on average 1.4101088899723713) internal successors, (86764), 61530 states have internal predecessors, (86764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:57:38,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61531 states to 61531 states and 86764 transitions. [2022-12-13 13:57:38,698 INFO L78 Accepts]: Start accepts. Automaton has 61531 states and 86764 transitions. Word has length 75 [2022-12-13 13:57:38,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:57:38,698 INFO L495 AbstractCegarLoop]: Abstraction has 61531 states and 86764 transitions. [2022-12-13 13:57:38,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:57:38,698 INFO L276 IsEmpty]: Start isEmpty. Operand 61531 states and 86764 transitions. [2022-12-13 13:57:38,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-12-13 13:57:38,702 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:57:38,702 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:57:38,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 13:57:38,702 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:57:38,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:57:38,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1189070444, now seen corresponding path program 1 times [2022-12-13 13:57:38,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:57:38,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969678791] [2022-12-13 13:57:38,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:57:38,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:57:38,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:38,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:57:38,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:57:38,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969678791] [2022-12-13 13:57:38,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969678791] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:57:38,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:57:38,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 13:57:38,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998155695] [2022-12-13 13:57:38,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:57:38,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:57:38,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:57:38,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:57:38,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:57:38,764 INFO L87 Difference]: Start difference. First operand 61531 states and 86764 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:59:03,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:59:03,996 INFO L93 Difference]: Finished difference Result 262557 states and 365970 transitions. [2022-12-13 13:59:03,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 13:59:03,997 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-12-13 13:59:03,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:59:04,389 INFO L225 Difference]: With dead ends: 262557 [2022-12-13 13:59:04,389 INFO L226 Difference]: Without dead ends: 240122 [2022-12-13 13:59:04,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-12-13 13:59:04,446 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 2277 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2277 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 13:59:04,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2277 Valid, 578 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 13:59:04,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240122 states. [2022-12-13 13:59:27,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240122 to 61713. [2022-12-13 13:59:27,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61713 states, 61712 states have (on average 1.4094503500129634) internal successors, (86980), 61712 states have internal predecessors, (86980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:59:27,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61713 states to 61713 states and 86980 transitions. [2022-12-13 13:59:27,457 INFO L78 Accepts]: Start accepts. Automaton has 61713 states and 86980 transitions. Word has length 75 [2022-12-13 13:59:27,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:59:27,457 INFO L495 AbstractCegarLoop]: Abstraction has 61713 states and 86980 transitions. [2022-12-13 13:59:27,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:59:27,458 INFO L276 IsEmpty]: Start isEmpty. Operand 61713 states and 86980 transitions. [2022-12-13 13:59:27,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-12-13 13:59:27,461 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:59:27,461 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:59:27,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 13:59:27,461 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:59:27,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:59:27,461 INFO L85 PathProgramCache]: Analyzing trace with hash -95030964, now seen corresponding path program 1 times [2022-12-13 13:59:27,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:59:27,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84175974] [2022-12-13 13:59:27,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:59:27,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:59:27,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:59:27,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:59:27,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:59:27,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84175974] [2022-12-13 13:59:27,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84175974] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:59:27,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:59:27,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 13:59:27,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576808378] [2022-12-13 13:59:27,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:59:27,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:59:27,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:59:27,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:59:27,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:59:27,516 INFO L87 Difference]: Start difference. First operand 61713 states and 86980 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:00:37,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:00:37,621 INFO L93 Difference]: Finished difference Result 219033 states and 306569 transitions. [2022-12-13 14:00:37,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 14:00:37,621 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-12-13 14:00:37,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:00:37,888 INFO L225 Difference]: With dead ends: 219033 [2022-12-13 14:00:37,888 INFO L226 Difference]: Without dead ends: 185361 [2022-12-13 14:00:37,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-12-13 14:00:37,935 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 2177 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2177 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 14:00:37,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2177 Valid, 437 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 14:00:38,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185361 states. [2022-12-13 14:01:02,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185361 to 61763. [2022-12-13 14:01:02,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61763 states, 61762 states have (on average 1.4092807875392637) internal successors, (87040), 61762 states have internal predecessors, (87040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:01:02,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61763 states to 61763 states and 87040 transitions. [2022-12-13 14:01:02,682 INFO L78 Accepts]: Start accepts. Automaton has 61763 states and 87040 transitions. Word has length 75 [2022-12-13 14:01:02,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:01:02,682 INFO L495 AbstractCegarLoop]: Abstraction has 61763 states and 87040 transitions. [2022-12-13 14:01:02,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:01:02,682 INFO L276 IsEmpty]: Start isEmpty. Operand 61763 states and 87040 transitions. [2022-12-13 14:01:02,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-12-13 14:01:02,686 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:01:02,686 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:01:02,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 14:01:02,686 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:01:02,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:01:02,686 INFO L85 PathProgramCache]: Analyzing trace with hash 2062889360, now seen corresponding path program 1 times [2022-12-13 14:01:02,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:01:02,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920725187] [2022-12-13 14:01:02,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:01:02,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:01:02,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:02,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:01:02,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:01:02,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920725187] [2022-12-13 14:01:02,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920725187] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:01:02,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:01:02,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 14:01:02,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199210648] [2022-12-13 14:01:02,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:01:02,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 14:01:02,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:01:02,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 14:01:02,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 14:01:02,745 INFO L87 Difference]: Start difference. First operand 61763 states and 87040 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:02:31,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:02:31,265 INFO L93 Difference]: Finished difference Result 222972 states and 310011 transitions. [2022-12-13 14:02:31,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 14:02:31,266 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-12-13 14:02:31,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:02:31,615 INFO L225 Difference]: With dead ends: 222972 [2022-12-13 14:02:31,615 INFO L226 Difference]: Without dead ends: 211211 [2022-12-13 14:02:31,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-12-13 14:02:31,668 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 2306 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2306 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 14:02:31,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2306 Valid, 497 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 14:02:31,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211211 states. [2022-12-13 14:02:58,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211211 to 62061. [2022-12-13 14:02:58,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62061 states, 62060 states have (on average 1.4081050596197229) internal successors, (87387), 62060 states have internal predecessors, (87387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:02:58,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62061 states to 62061 states and 87387 transitions. [2022-12-13 14:02:58,410 INFO L78 Accepts]: Start accepts. Automaton has 62061 states and 87387 transitions. Word has length 75 [2022-12-13 14:02:58,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:02:58,411 INFO L495 AbstractCegarLoop]: Abstraction has 62061 states and 87387 transitions. [2022-12-13 14:02:58,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:02:58,411 INFO L276 IsEmpty]: Start isEmpty. Operand 62061 states and 87387 transitions. [2022-12-13 14:02:58,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-13 14:02:58,415 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:02:58,415 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:02:58,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-13 14:02:58,415 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:02:58,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:02:58,415 INFO L85 PathProgramCache]: Analyzing trace with hash 294775424, now seen corresponding path program 1 times [2022-12-13 14:02:58,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:02:58,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753919738] [2022-12-13 14:02:58,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:02:58,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:02:58,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:02:58,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:02:58,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:02:58,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753919738] [2022-12-13 14:02:58,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753919738] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:02:58,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:02:58,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-13 14:02:58,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068828629] [2022-12-13 14:02:58,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:02:58,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 14:02:58,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:02:58,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 14:02:58,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-12-13 14:02:58,958 INFO L87 Difference]: Start difference. First operand 62061 states and 87387 transitions. Second operand has 14 states, 14 states have (on average 5.5) internal successors, (77), 14 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)