./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157892cd-09e1-4703-bb6e-c45c106cddee/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157892cd-09e1-4703-bb6e-c45c106cddee/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157892cd-09e1-4703-bb6e-c45c106cddee/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157892cd-09e1-4703-bb6e-c45c106cddee/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157892cd-09e1-4703-bb6e-c45c106cddee/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157892cd-09e1-4703-bb6e-c45c106cddee/bin/uautomizer-verify-4GaUIPS5ZU --witnessprinter.witness.filename witness --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 d4091e99c6c703f11d6d31e8eaec6c84e6dd277464e5b390742bbd7adf0ea708 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:06:57,606 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:06:57,672 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157892cd-09e1-4703-bb6e-c45c106cddee/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 22:06:57,677 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:06:57,677 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:06:57,702 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:06:57,702 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:06:57,703 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:06:57,703 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:06:57,704 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:06:57,704 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:06:57,704 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:06:57,705 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:06:57,705 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:06:57,706 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:06:57,706 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:06:57,707 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:06:57,707 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:06:57,707 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:06:57,708 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:06:57,708 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:06:57,709 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:06:57,709 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:06:57,710 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:06:57,710 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:06:57,710 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:06:57,711 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:06:57,711 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:06:57,711 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:06:57,712 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:06:57,712 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:06:57,713 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:06:57,713 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:06:57,713 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:06:57,714 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:06:57,714 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:06:57,714 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:06:57,715 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:06:57,715 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:06:57,715 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:06:57,715 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:06:57,716 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:06:57,716 INFO L153 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_157892cd-09e1-4703-bb6e-c45c106cddee/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157892cd-09e1-4703-bb6e-c45c106cddee/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d4091e99c6c703f11d6d31e8eaec6c84e6dd277464e5b390742bbd7adf0ea708 [2024-10-31 22:06:57,974 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:06:58,004 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:06:58,009 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:06:58,011 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:06:58,012 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:06:58,013 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157892cd-09e1-4703-bb6e-c45c106cddee/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c Unable to find full path for "g++" [2024-10-31 22:07:00,202 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:07:00,478 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:07:00,479 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157892cd-09e1-4703-bb6e-c45c106cddee/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2024-10-31 22:07:00,498 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157892cd-09e1-4703-bb6e-c45c106cddee/bin/uautomizer-verify-4GaUIPS5ZU/data/286b37548/e2068af969e04f52be0405e5d5a5300e/FLAG615cb6c28 [2024-10-31 22:07:00,513 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157892cd-09e1-4703-bb6e-c45c106cddee/bin/uautomizer-verify-4GaUIPS5ZU/data/286b37548/e2068af969e04f52be0405e5d5a5300e [2024-10-31 22:07:00,516 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:07:00,517 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:07:00,518 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:07:00,519 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:07:00,532 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:07:00,533 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:07:00" (1/1) ... [2024-10-31 22:07:00,534 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@527a497f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:00, skipping insertion in model container [2024-10-31 22:07:00,535 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:07:00" (1/1) ... [2024-10-31 22:07:00,592 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:07:01,037 WARN L251 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_157892cd-09e1-4703-bb6e-c45c106cddee/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[14145,14158] [2024-10-31 22:07:01,136 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:07:01,157 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:07:01,258 WARN L251 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_157892cd-09e1-4703-bb6e-c45c106cddee/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[14145,14158] [2024-10-31 22:07:01,328 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:07:01,354 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:07:01,354 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:01 WrapperNode [2024-10-31 22:07:01,354 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:07:01,355 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:07:01,356 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:07:01,356 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:07:01,363 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:01" (1/1) ... [2024-10-31 22:07:01,380 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:01" (1/1) ... [2024-10-31 22:07:01,464 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1222 [2024-10-31 22:07:01,464 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:07:01,465 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:07:01,465 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:07:01,466 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:07:01,502 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:01" (1/1) ... [2024-10-31 22:07:01,506 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:01" (1/1) ... [2024-10-31 22:07:01,516 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:01" (1/1) ... [2024-10-31 22:07:01,556 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-31 22:07:01,559 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:01" (1/1) ... [2024-10-31 22:07:01,560 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:01" (1/1) ... [2024-10-31 22:07:01,602 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:01" (1/1) ... [2024-10-31 22:07:01,616 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:01" (1/1) ... [2024-10-31 22:07:01,626 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:01" (1/1) ... [2024-10-31 22:07:01,635 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:01" (1/1) ... [2024-10-31 22:07:01,644 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:07:01,645 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:07:01,645 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:07:01,646 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:07:01,647 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:01" (1/1) ... [2024-10-31 22:07:01,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:07:01,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157892cd-09e1-4703-bb6e-c45c106cddee/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:07:01,709 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157892cd-09e1-4703-bb6e-c45c106cddee/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:07:01,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_157892cd-09e1-4703-bb6e-c45c106cddee/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:07:01,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:07:01,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:07:01,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:07:01,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:07:01,981 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:07:01,984 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:07:03,355 INFO L? ?]: Removed 82 outVars from TransFormulas that were not future-live. [2024-10-31 22:07:03,356 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:07:03,377 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:07:03,378 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-31 22:07:03,378 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:07:03 BoogieIcfgContainer [2024-10-31 22:07:03,378 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:07:03,383 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:07:03,384 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:07:03,388 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:07:03,388 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:07:00" (1/3) ... [2024-10-31 22:07:03,389 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2619e2fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:07:03, skipping insertion in model container [2024-10-31 22:07:03,389 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:01" (2/3) ... [2024-10-31 22:07:03,390 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2619e2fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:07:03, skipping insertion in model container [2024-10-31 22:07:03,391 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:07:03" (3/3) ... [2024-10-31 22:07:03,394 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2024-10-31 22:07:03,413 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:07:03,414 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 22:07:03,500 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:07:03,507 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@20dbb82f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:07:03,507 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-31 22:07:03,514 INFO L276 IsEmpty]: Start isEmpty. Operand has 294 states, 292 states have (on average 1.7945205479452055) internal successors, (524), 293 states have internal predecessors, (524), 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) [2024-10-31 22:07:03,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-10-31 22:07:03,530 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:07:03,530 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:07:03,531 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:07:03,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:03,537 INFO L85 PathProgramCache]: Analyzing trace with hash -37487086, now seen corresponding path program 1 times [2024-10-31 22:07:03,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:03,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049869341] [2024-10-31 22:07:03,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:03,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:03,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:04,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:04,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:04,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049869341] [2024-10-31 22:07:04,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049869341] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:07:04,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:07:04,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:07:04,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230365418] [2024-10-31 22:07:04,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:07:04,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:07:04,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:07:04,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:07:04,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:07:04,496 INFO L87 Difference]: Start difference. First operand has 294 states, 292 states have (on average 1.7945205479452055) internal successors, (524), 293 states have internal predecessors, (524), 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 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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) [2024-10-31 22:07:04,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:07:04,768 INFO L93 Difference]: Finished difference Result 590 states and 1044 transitions. [2024-10-31 22:07:04,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:07:04,772 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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 141 [2024-10-31 22:07:04,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:07:04,797 INFO L225 Difference]: With dead ends: 590 [2024-10-31 22:07:04,797 INFO L226 Difference]: Without dead ends: 473 [2024-10-31 22:07:04,801 INFO L431 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 [2024-10-31 22:07:04,806 INFO L432 NwaCegarLoop]: 499 mSDtfsCounter, 347 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 873 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-31 22:07:04,807 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 873 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-31 22:07:04,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2024-10-31 22:07:04,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 471. [2024-10-31 22:07:04,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 470 states have (on average 1.4936170212765958) internal successors, (702), 470 states have internal predecessors, (702), 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) [2024-10-31 22:07:04,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 702 transitions. [2024-10-31 22:07:04,902 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 702 transitions. Word has length 141 [2024-10-31 22:07:04,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:07:04,903 INFO L471 AbstractCegarLoop]: Abstraction has 471 states and 702 transitions. [2024-10-31 22:07:04,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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) [2024-10-31 22:07:04,903 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 702 transitions. [2024-10-31 22:07:04,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-10-31 22:07:04,909 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:07:04,909 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:07:04,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:07:04,910 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:07:04,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:04,910 INFO L85 PathProgramCache]: Analyzing trace with hash -106858572, now seen corresponding path program 1 times [2024-10-31 22:07:04,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:04,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477050709] [2024-10-31 22:07:04,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:04,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:05,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:05,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:05,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:05,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477050709] [2024-10-31 22:07:05,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477050709] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:07:05,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:07:05,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:07:05,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211715922] [2024-10-31 22:07:05,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:07:05,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:07:05,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:07:05,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:07:05,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:07:05,965 INFO L87 Difference]: Start difference. First operand 471 states and 702 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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) [2024-10-31 22:07:06,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:07:06,119 INFO L93 Difference]: Finished difference Result 1808 states and 2680 transitions. [2024-10-31 22:07:06,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:07:06,121 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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 141 [2024-10-31 22:07:06,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:07:06,130 INFO L225 Difference]: With dead ends: 1808 [2024-10-31 22:07:06,131 INFO L226 Difference]: Without dead ends: 1362 [2024-10-31 22:07:06,133 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:07:06,136 INFO L432 NwaCegarLoop]: 735 mSDtfsCounter, 761 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 1504 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:07:06,137 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 1504 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:07:06,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2024-10-31 22:07:06,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 916. [2024-10-31 22:07:06,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 915 states have (on average 1.478688524590164) internal successors, (1353), 915 states have internal predecessors, (1353), 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) [2024-10-31 22:07:06,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1353 transitions. [2024-10-31 22:07:06,216 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1353 transitions. Word has length 141 [2024-10-31 22:07:06,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:07:06,218 INFO L471 AbstractCegarLoop]: Abstraction has 916 states and 1353 transitions. [2024-10-31 22:07:06,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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) [2024-10-31 22:07:06,219 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1353 transitions. [2024-10-31 22:07:06,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-10-31 22:07:06,229 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:07:06,229 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:07:06,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:07:06,230 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:07:06,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:06,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1746789024, now seen corresponding path program 1 times [2024-10-31 22:07:06,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:06,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393612593] [2024-10-31 22:07:06,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:06,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:06,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:06,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:06,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:06,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393612593] [2024-10-31 22:07:06,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393612593] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:07:06,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:07:06,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:07:06,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367728830] [2024-10-31 22:07:06,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:07:06,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:07:06,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:07:06,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:07:06,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:07:06,418 INFO L87 Difference]: Start difference. First operand 916 states and 1353 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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) [2024-10-31 22:07:06,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:07:06,446 INFO L93 Difference]: Finished difference Result 1806 states and 2662 transitions. [2024-10-31 22:07:06,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:07:06,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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 142 [2024-10-31 22:07:06,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:07:06,451 INFO L225 Difference]: With dead ends: 1806 [2024-10-31 22:07:06,452 INFO L226 Difference]: Without dead ends: 918 [2024-10-31 22:07:06,455 INFO L431 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 [2024-10-31 22:07:06,459 INFO L432 NwaCegarLoop]: 427 mSDtfsCounter, 0 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:07:06,460 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 848 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:07:06,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2024-10-31 22:07:06,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 918. [2024-10-31 22:07:06,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 918 states, 917 states have (on average 1.4776444929116686) internal successors, (1355), 917 states have internal predecessors, (1355), 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) [2024-10-31 22:07:06,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 1355 transitions. [2024-10-31 22:07:06,491 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 1355 transitions. Word has length 142 [2024-10-31 22:07:06,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:07:06,492 INFO L471 AbstractCegarLoop]: Abstraction has 918 states and 1355 transitions. [2024-10-31 22:07:06,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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) [2024-10-31 22:07:06,493 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 1355 transitions. [2024-10-31 22:07:06,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-10-31 22:07:06,497 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:07:06,498 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:07:06,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:07:06,499 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:07:06,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:06,500 INFO L85 PathProgramCache]: Analyzing trace with hash 463094692, now seen corresponding path program 1 times [2024-10-31 22:07:06,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:06,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081535258] [2024-10-31 22:07:06,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:06,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:06,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:06,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:06,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:06,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081535258] [2024-10-31 22:07:06,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081535258] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:07:06,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:07:06,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:07:06,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591982588] [2024-10-31 22:07:06,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:07:06,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:07:06,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:07:06,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:07:06,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:07:06,728 INFO L87 Difference]: Start difference. First operand 918 states and 1355 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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) [2024-10-31 22:07:06,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:07:06,813 INFO L93 Difference]: Finished difference Result 2514 states and 3724 transitions. [2024-10-31 22:07:06,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:07:06,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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 143 [2024-10-31 22:07:06,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:07:06,822 INFO L225 Difference]: With dead ends: 2514 [2024-10-31 22:07:06,822 INFO L226 Difference]: Without dead ends: 1774 [2024-10-31 22:07:06,823 INFO L431 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 [2024-10-31 22:07:06,827 INFO L432 NwaCegarLoop]: 767 mSDtfsCounter, 354 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:07:06,828 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 1153 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:07:06,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1774 states. [2024-10-31 22:07:06,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1774 to 1772. [2024-10-31 22:07:06,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1772 states, 1771 states have (on average 1.461321287408244) internal successors, (2588), 1771 states have internal predecessors, (2588), 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) [2024-10-31 22:07:06,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1772 states to 1772 states and 2588 transitions. [2024-10-31 22:07:06,881 INFO L78 Accepts]: Start accepts. Automaton has 1772 states and 2588 transitions. Word has length 143 [2024-10-31 22:07:06,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:07:06,882 INFO L471 AbstractCegarLoop]: Abstraction has 1772 states and 2588 transitions. [2024-10-31 22:07:06,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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) [2024-10-31 22:07:06,882 INFO L276 IsEmpty]: Start isEmpty. Operand 1772 states and 2588 transitions. [2024-10-31 22:07:06,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-10-31 22:07:06,886 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:07:06,886 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:07:06,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:07:06,887 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:07:06,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:06,888 INFO L85 PathProgramCache]: Analyzing trace with hash 2076257255, now seen corresponding path program 1 times [2024-10-31 22:07:06,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:06,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440966218] [2024-10-31 22:07:06,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:06,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:07,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:07,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:07,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:07,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440966218] [2024-10-31 22:07:07,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440966218] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:07:07,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:07:07,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:07:07,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681170379] [2024-10-31 22:07:07,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:07:07,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:07:07,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:07:07,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:07:07,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:07:07,636 INFO L87 Difference]: Start difference. First operand 1772 states and 2588 transitions. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 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) [2024-10-31 22:07:07,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:07:07,688 INFO L93 Difference]: Finished difference Result 2955 states and 4329 transitions. [2024-10-31 22:07:07,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:07:07,690 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 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 143 [2024-10-31 22:07:07,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:07:07,696 INFO L225 Difference]: With dead ends: 2955 [2024-10-31 22:07:07,696 INFO L226 Difference]: Without dead ends: 1351 [2024-10-31 22:07:07,698 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:07:07,699 INFO L432 NwaCegarLoop]: 470 mSDtfsCounter, 25 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 1357 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:07:07,703 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 1357 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:07:07,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2024-10-31 22:07:07,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1351. [2024-10-31 22:07:07,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1351 states, 1350 states have (on average 1.4555555555555555) internal successors, (1965), 1350 states have internal predecessors, (1965), 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) [2024-10-31 22:07:07,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1351 states to 1351 states and 1965 transitions. [2024-10-31 22:07:07,743 INFO L78 Accepts]: Start accepts. Automaton has 1351 states and 1965 transitions. Word has length 143 [2024-10-31 22:07:07,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:07:07,743 INFO L471 AbstractCegarLoop]: Abstraction has 1351 states and 1965 transitions. [2024-10-31 22:07:07,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 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) [2024-10-31 22:07:07,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1351 states and 1965 transitions. [2024-10-31 22:07:07,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-10-31 22:07:07,747 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:07:07,747 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:07:07,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:07:07,748 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:07:07,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:07,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1549951936, now seen corresponding path program 1 times [2024-10-31 22:07:07,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:07,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179776123] [2024-10-31 22:07:07,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:07,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:07,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:08,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:08,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:08,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179776123] [2024-10-31 22:07:08,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179776123] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:07:08,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:07:08,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:07:08,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773399120] [2024-10-31 22:07:08,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:07:08,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:07:08,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:07:08,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:07:08,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:07:08,057 INFO L87 Difference]: Start difference. First operand 1351 states and 1965 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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) [2024-10-31 22:07:08,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:07:08,360 INFO L93 Difference]: Finished difference Result 2535 states and 3714 transitions. [2024-10-31 22:07:08,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:07:08,361 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 146 [2024-10-31 22:07:08,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:07:08,369 INFO L225 Difference]: With dead ends: 2535 [2024-10-31 22:07:08,370 INFO L226 Difference]: Without dead ends: 1351 [2024-10-31 22:07:08,372 INFO L431 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 [2024-10-31 22:07:08,373 INFO L432 NwaCegarLoop]: 319 mSDtfsCounter, 1106 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1106 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-31 22:07:08,374 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1106 Valid, 415 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-31 22:07:08,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2024-10-31 22:07:08,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1351. [2024-10-31 22:07:08,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1351 states, 1350 states have (on average 1.4444444444444444) internal successors, (1950), 1350 states have internal predecessors, (1950), 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) [2024-10-31 22:07:08,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1351 states to 1351 states and 1950 transitions. [2024-10-31 22:07:08,427 INFO L78 Accepts]: Start accepts. Automaton has 1351 states and 1950 transitions. Word has length 146 [2024-10-31 22:07:08,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:07:08,428 INFO L471 AbstractCegarLoop]: Abstraction has 1351 states and 1950 transitions. [2024-10-31 22:07:08,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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) [2024-10-31 22:07:08,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1351 states and 1950 transitions. [2024-10-31 22:07:08,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-10-31 22:07:08,433 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:07:08,434 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:07:08,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:07:08,434 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:07:08,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:08,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1026467579, now seen corresponding path program 1 times [2024-10-31 22:07:08,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:08,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267880617] [2024-10-31 22:07:08,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:08,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:08,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:09,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:09,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:09,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267880617] [2024-10-31 22:07:09,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267880617] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:07:09,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:07:09,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:07:09,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622547078] [2024-10-31 22:07:09,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:07:09,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:07:09,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:07:09,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:07:09,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:07:09,095 INFO L87 Difference]: Start difference. First operand 1351 states and 1950 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 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) [2024-10-31 22:07:09,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:07:09,259 INFO L93 Difference]: Finished difference Result 2929 states and 4373 transitions. [2024-10-31 22:07:09,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:07:09,264 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 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 146 [2024-10-31 22:07:09,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:07:09,271 INFO L225 Difference]: With dead ends: 2929 [2024-10-31 22:07:09,272 INFO L226 Difference]: Without dead ends: 2359 [2024-10-31 22:07:09,273 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:07:09,276 INFO L432 NwaCegarLoop]: 386 mSDtfsCounter, 721 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:07:09,277 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [721 Valid, 766 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:07:09,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2359 states. [2024-10-31 22:07:09,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2359 to 2357. [2024-10-31 22:07:09,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2357 states, 2356 states have (on average 1.4584040747028864) internal successors, (3436), 2356 states have internal predecessors, (3436), 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) [2024-10-31 22:07:09,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2357 states to 2357 states and 3436 transitions. [2024-10-31 22:07:09,338 INFO L78 Accepts]: Start accepts. Automaton has 2357 states and 3436 transitions. Word has length 146 [2024-10-31 22:07:09,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:07:09,340 INFO L471 AbstractCegarLoop]: Abstraction has 2357 states and 3436 transitions. [2024-10-31 22:07:09,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 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) [2024-10-31 22:07:09,340 INFO L276 IsEmpty]: Start isEmpty. Operand 2357 states and 3436 transitions. [2024-10-31 22:07:09,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-10-31 22:07:09,344 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:07:09,344 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:07:09,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:07:09,345 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:07:09,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:09,345 INFO L85 PathProgramCache]: Analyzing trace with hash -981368772, now seen corresponding path program 1 times [2024-10-31 22:07:09,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:09,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561017081] [2024-10-31 22:07:09,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:09,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:09,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:09,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:09,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:09,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561017081] [2024-10-31 22:07:09,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561017081] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:07:09,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:07:09,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:07:09,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859244337] [2024-10-31 22:07:09,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:07:09,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:07:09,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:07:09,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:07:09,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:07:09,945 INFO L87 Difference]: Start difference. First operand 2357 states and 3436 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 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) [2024-10-31 22:07:10,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:07:10,052 INFO L93 Difference]: Finished difference Result 6107 states and 8896 transitions. [2024-10-31 22:07:10,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:07:10,053 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 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 146 [2024-10-31 22:07:10,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:07:10,065 INFO L225 Difference]: With dead ends: 6107 [2024-10-31 22:07:10,066 INFO L226 Difference]: Without dead ends: 3787 [2024-10-31 22:07:10,070 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:07:10,070 INFO L432 NwaCegarLoop]: 732 mSDtfsCounter, 721 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 1112 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:07:10,071 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [721 Valid, 1112 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:07:10,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3787 states. [2024-10-31 22:07:10,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3787 to 3785. [2024-10-31 22:07:10,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3785 states, 3784 states have (on average 1.444767441860465) internal successors, (5467), 3784 states have internal predecessors, (5467), 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) [2024-10-31 22:07:10,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3785 states to 3785 states and 5467 transitions. [2024-10-31 22:07:10,170 INFO L78 Accepts]: Start accepts. Automaton has 3785 states and 5467 transitions. Word has length 146 [2024-10-31 22:07:10,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:07:10,170 INFO L471 AbstractCegarLoop]: Abstraction has 3785 states and 5467 transitions. [2024-10-31 22:07:10,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 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) [2024-10-31 22:07:10,171 INFO L276 IsEmpty]: Start isEmpty. Operand 3785 states and 5467 transitions. [2024-10-31 22:07:10,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-10-31 22:07:10,176 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:07:10,176 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:07:10,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 22:07:10,177 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:07:10,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:10,178 INFO L85 PathProgramCache]: Analyzing trace with hash -2132081647, now seen corresponding path program 1 times [2024-10-31 22:07:10,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:10,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844759750] [2024-10-31 22:07:10,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:10,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:10,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:10,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:10,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:10,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844759750] [2024-10-31 22:07:10,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844759750] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:07:10,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:07:10,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:07:10,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291311394] [2024-10-31 22:07:10,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:07:10,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:07:10,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:07:10,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:07:10,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:07:10,296 INFO L87 Difference]: Start difference. First operand 3785 states and 5467 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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) [2024-10-31 22:07:10,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:07:10,363 INFO L93 Difference]: Finished difference Result 8177 states and 11816 transitions. [2024-10-31 22:07:10,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:07:10,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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 147 [2024-10-31 22:07:10,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:07:10,382 INFO L225 Difference]: With dead ends: 8177 [2024-10-31 22:07:10,383 INFO L226 Difference]: Without dead ends: 5267 [2024-10-31 22:07:10,387 INFO L431 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 [2024-10-31 22:07:10,389 INFO L432 NwaCegarLoop]: 750 mSDtfsCounter, 396 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 1165 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:07:10,390 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 1165 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:07:10,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5267 states. [2024-10-31 22:07:10,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5267 to 3785. [2024-10-31 22:07:10,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3785 states, 3784 states have (on average 1.4445031712473573) internal successors, (5466), 3784 states have internal predecessors, (5466), 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) [2024-10-31 22:07:10,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3785 states to 3785 states and 5466 transitions. [2024-10-31 22:07:10,527 INFO L78 Accepts]: Start accepts. Automaton has 3785 states and 5466 transitions. Word has length 147 [2024-10-31 22:07:10,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:07:10,528 INFO L471 AbstractCegarLoop]: Abstraction has 3785 states and 5466 transitions. [2024-10-31 22:07:10,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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) [2024-10-31 22:07:10,528 INFO L276 IsEmpty]: Start isEmpty. Operand 3785 states and 5466 transitions. [2024-10-31 22:07:10,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-10-31 22:07:10,533 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:07:10,533 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:07:10,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-31 22:07:10,534 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:07:10,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:10,534 INFO L85 PathProgramCache]: Analyzing trace with hash -850172162, now seen corresponding path program 1 times [2024-10-31 22:07:10,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:10,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460247852] [2024-10-31 22:07:10,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:10,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:10,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:10,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:10,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:10,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460247852] [2024-10-31 22:07:10,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460247852] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:07:10,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:07:10,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:07:10,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017768399] [2024-10-31 22:07:10,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:07:10,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:07:10,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:07:10,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:07:10,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:07:10,671 INFO L87 Difference]: Start difference. First operand 3785 states and 5466 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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) [2024-10-31 22:07:10,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:07:10,777 INFO L93 Difference]: Finished difference Result 10679 states and 15439 transitions. [2024-10-31 22:07:10,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:07:10,778 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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 148 [2024-10-31 22:07:10,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:07:10,810 INFO L225 Difference]: With dead ends: 10679 [2024-10-31 22:07:10,810 INFO L226 Difference]: Without dead ends: 7250 [2024-10-31 22:07:10,817 INFO L431 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 [2024-10-31 22:07:10,818 INFO L432 NwaCegarLoop]: 787 mSDtfsCounter, 344 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:07:10,820 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 1167 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:07:10,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7250 states. [2024-10-31 22:07:10,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7250 to 7248. [2024-10-31 22:07:11,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7248 states, 7247 states have (on average 1.4256933903684283) internal successors, (10332), 7247 states have internal predecessors, (10332), 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) [2024-10-31 22:07:11,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7248 states to 7248 states and 10332 transitions. [2024-10-31 22:07:11,040 INFO L78 Accepts]: Start accepts. Automaton has 7248 states and 10332 transitions. Word has length 148 [2024-10-31 22:07:11,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:07:11,040 INFO L471 AbstractCegarLoop]: Abstraction has 7248 states and 10332 transitions. [2024-10-31 22:07:11,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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) [2024-10-31 22:07:11,041 INFO L276 IsEmpty]: Start isEmpty. Operand 7248 states and 10332 transitions. [2024-10-31 22:07:11,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-10-31 22:07:11,050 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:07:11,050 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:07:11,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-31 22:07:11,051 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:07:11,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:11,051 INFO L85 PathProgramCache]: Analyzing trace with hash 486667227, now seen corresponding path program 1 times [2024-10-31 22:07:11,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:11,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988887953] [2024-10-31 22:07:11,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:11,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:11,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:11,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:11,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:11,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988887953] [2024-10-31 22:07:11,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988887953] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:07:11,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:07:11,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:07:11,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184403986] [2024-10-31 22:07:11,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:07:11,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:07:11,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:07:11,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:07:11,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:07:11,672 INFO L87 Difference]: Start difference. First operand 7248 states and 10332 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 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) [2024-10-31 22:07:11,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:07:11,773 INFO L93 Difference]: Finished difference Result 12934 states and 18441 transitions. [2024-10-31 22:07:11,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:07:11,778 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 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 148 [2024-10-31 22:07:11,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:07:11,797 INFO L225 Difference]: With dead ends: 12934 [2024-10-31 22:07:11,797 INFO L226 Difference]: Without dead ends: 5896 [2024-10-31 22:07:11,808 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:07:11,808 INFO L432 NwaCegarLoop]: 458 mSDtfsCounter, 20 mSDsluCounter, 869 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1327 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:07:11,808 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 1327 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:07:11,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5896 states. [2024-10-31 22:07:11,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5896 to 5896. [2024-10-31 22:07:11,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5896 states, 5895 states have (on average 1.4195080576759966) internal successors, (8368), 5895 states have internal predecessors, (8368), 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) [2024-10-31 22:07:11,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5896 states to 5896 states and 8368 transitions. [2024-10-31 22:07:11,942 INFO L78 Accepts]: Start accepts. Automaton has 5896 states and 8368 transitions. Word has length 148 [2024-10-31 22:07:11,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:07:11,942 INFO L471 AbstractCegarLoop]: Abstraction has 5896 states and 8368 transitions. [2024-10-31 22:07:11,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 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) [2024-10-31 22:07:11,942 INFO L276 IsEmpty]: Start isEmpty. Operand 5896 states and 8368 transitions. [2024-10-31 22:07:11,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-10-31 22:07:11,949 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:07:11,949 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:07:11,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-31 22:07:11,950 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:07:11,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:11,950 INFO L85 PathProgramCache]: Analyzing trace with hash -236565050, now seen corresponding path program 1 times [2024-10-31 22:07:11,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:11,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768806064] [2024-10-31 22:07:11,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:11,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:12,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:12,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:12,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:12,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768806064] [2024-10-31 22:07:12,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768806064] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:07:12,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:07:12,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-31 22:07:12,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351479137] [2024-10-31 22:07:12,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:07:12,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-31 22:07:12,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:07:12,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-31 22:07:12,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:07:12,324 INFO L87 Difference]: Start difference. First operand 5896 states and 8368 transitions. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 7 states have internal predecessors, (151), 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) [2024-10-31 22:07:13,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:07:13,192 INFO L93 Difference]: Finished difference Result 19473 states and 28946 transitions. [2024-10-31 22:07:13,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-31 22:07:13,193 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 7 states have internal predecessors, (151), 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 151 [2024-10-31 22:07:13,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:07:13,223 INFO L225 Difference]: With dead ends: 19473 [2024-10-31 22:07:13,223 INFO L226 Difference]: Without dead ends: 14018 [2024-10-31 22:07:13,232 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2024-10-31 22:07:13,233 INFO L432 NwaCegarLoop]: 364 mSDtfsCounter, 4531 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4531 SdHoareTripleChecker+Valid, 1131 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-31 22:07:13,233 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4531 Valid, 1131 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-31 22:07:13,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14018 states. [2024-10-31 22:07:13,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14018 to 8636. [2024-10-31 22:07:13,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8636 states, 8635 states have (on average 1.446670526925304) internal successors, (12492), 8635 states have internal predecessors, (12492), 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) [2024-10-31 22:07:13,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8636 states to 8636 states and 12492 transitions. [2024-10-31 22:07:13,470 INFO L78 Accepts]: Start accepts. Automaton has 8636 states and 12492 transitions. Word has length 151 [2024-10-31 22:07:13,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:07:13,471 INFO L471 AbstractCegarLoop]: Abstraction has 8636 states and 12492 transitions. [2024-10-31 22:07:13,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 7 states have internal predecessors, (151), 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) [2024-10-31 22:07:13,471 INFO L276 IsEmpty]: Start isEmpty. Operand 8636 states and 12492 transitions. [2024-10-31 22:07:13,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-10-31 22:07:13,477 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:07:13,478 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:07:13,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-31 22:07:13,478 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:07:13,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:13,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1560885536, now seen corresponding path program 1 times [2024-10-31 22:07:13,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:13,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81386412] [2024-10-31 22:07:13,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:13,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:13,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:13,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:13,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:13,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81386412] [2024-10-31 22:07:13,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81386412] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:07:13,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:07:13,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:07:13,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891691272] [2024-10-31 22:07:13,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:07:13,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:07:13,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:07:13,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:07:13,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:07:13,913 INFO L87 Difference]: Start difference. First operand 8636 states and 12492 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 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) [2024-10-31 22:07:14,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:07:14,097 INFO L93 Difference]: Finished difference Result 32949 states and 47490 transitions. [2024-10-31 22:07:14,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:07:14,098 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 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 151 [2024-10-31 22:07:14,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:07:14,142 INFO L225 Difference]: With dead ends: 32949 [2024-10-31 22:07:14,142 INFO L226 Difference]: Without dead ends: 24378 [2024-10-31 22:07:14,155 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:07:14,156 INFO L432 NwaCegarLoop]: 682 mSDtfsCounter, 753 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 1395 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:07:14,157 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [753 Valid, 1395 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:07:14,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24378 states. [2024-10-31 22:07:14,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24378 to 16511. [2024-10-31 22:07:14,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16511 states, 16510 states have (on average 1.4271956390066627) internal successors, (23563), 16510 states have internal predecessors, (23563), 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) [2024-10-31 22:07:14,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16511 states to 16511 states and 23563 transitions. [2024-10-31 22:07:14,673 INFO L78 Accepts]: Start accepts. Automaton has 16511 states and 23563 transitions. Word has length 151 [2024-10-31 22:07:14,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:07:14,673 INFO L471 AbstractCegarLoop]: Abstraction has 16511 states and 23563 transitions. [2024-10-31 22:07:14,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 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) [2024-10-31 22:07:14,674 INFO L276 IsEmpty]: Start isEmpty. Operand 16511 states and 23563 transitions. [2024-10-31 22:07:14,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-10-31 22:07:14,685 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:07:14,686 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:07:14,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-31 22:07:14,686 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:07:14,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:14,687 INFO L85 PathProgramCache]: Analyzing trace with hash 633734794, now seen corresponding path program 1 times [2024-10-31 22:07:14,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:14,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680695664] [2024-10-31 22:07:14,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:14,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:14,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:14,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:14,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:14,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680695664] [2024-10-31 22:07:14,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680695664] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:07:14,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:07:14,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:07:14,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752998342] [2024-10-31 22:07:14,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:07:14,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:07:14,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:07:14,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:07:14,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:07:14,789 INFO L87 Difference]: Start difference. First operand 16511 states and 23563 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 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) [2024-10-31 22:07:14,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:07:14,959 INFO L93 Difference]: Finished difference Result 32911 states and 46974 transitions. [2024-10-31 22:07:14,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:07:14,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 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 152 [2024-10-31 22:07:14,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:07:14,987 INFO L225 Difference]: With dead ends: 32911 [2024-10-31 22:07:14,987 INFO L226 Difference]: Without dead ends: 16519 [2024-10-31 22:07:14,996 INFO L431 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 [2024-10-31 22:07:14,997 INFO L432 NwaCegarLoop]: 412 mSDtfsCounter, 0 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:07:14,998 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 818 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:07:15,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16519 states. [2024-10-31 22:07:15,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16519 to 16519. [2024-10-31 22:07:15,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16519 states, 16518 states have (on average 1.426988739556847) internal successors, (23571), 16518 states have internal predecessors, (23571), 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) [2024-10-31 22:07:15,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16519 states to 16519 states and 23571 transitions. [2024-10-31 22:07:15,257 INFO L78 Accepts]: Start accepts. Automaton has 16519 states and 23571 transitions. Word has length 152 [2024-10-31 22:07:15,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:07:15,258 INFO L471 AbstractCegarLoop]: Abstraction has 16519 states and 23571 transitions. [2024-10-31 22:07:15,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 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) [2024-10-31 22:07:15,258 INFO L276 IsEmpty]: Start isEmpty. Operand 16519 states and 23571 transitions. [2024-10-31 22:07:15,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-10-31 22:07:15,270 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:07:15,270 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:07:15,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-31 22:07:15,271 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:07:15,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:15,271 INFO L85 PathProgramCache]: Analyzing trace with hash 76406335, now seen corresponding path program 1 times [2024-10-31 22:07:15,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:15,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711568490] [2024-10-31 22:07:15,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:15,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:15,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:15,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:15,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:15,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711568490] [2024-10-31 22:07:15,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711568490] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:07:15,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:07:15,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:07:15,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119520002] [2024-10-31 22:07:15,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:07:15,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:07:15,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:07:15,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:07:15,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:07:15,865 INFO L87 Difference]: Start difference. First operand 16519 states and 23571 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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) [2024-10-31 22:07:15,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:07:15,966 INFO L93 Difference]: Finished difference Result 32989 states and 47070 transitions. [2024-10-31 22:07:15,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:07:15,967 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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 153 [2024-10-31 22:07:15,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:07:15,996 INFO L225 Difference]: With dead ends: 32989 [2024-10-31 22:07:15,996 INFO L226 Difference]: Without dead ends: 16511 [2024-10-31 22:07:16,012 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:07:16,014 INFO L432 NwaCegarLoop]: 442 mSDtfsCounter, 14 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 1286 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:07:16,014 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 1286 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:07:16,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16511 states. [2024-10-31 22:07:16,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16511 to 16511. [2024-10-31 22:07:16,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16511 states, 16510 states have (on average 1.4267110841913992) internal successors, (23555), 16510 states have internal predecessors, (23555), 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) [2024-10-31 22:07:16,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16511 states to 16511 states and 23555 transitions. [2024-10-31 22:07:16,330 INFO L78 Accepts]: Start accepts. Automaton has 16511 states and 23555 transitions. Word has length 153 [2024-10-31 22:07:16,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:07:16,330 INFO L471 AbstractCegarLoop]: Abstraction has 16511 states and 23555 transitions. [2024-10-31 22:07:16,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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) [2024-10-31 22:07:16,330 INFO L276 IsEmpty]: Start isEmpty. Operand 16511 states and 23555 transitions. [2024-10-31 22:07:16,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-10-31 22:07:16,342 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:07:16,343 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:07:16,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-31 22:07:16,343 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:07:16,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:16,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1107932436, now seen corresponding path program 1 times [2024-10-31 22:07:16,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:16,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221016422] [2024-10-31 22:07:16,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:16,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:16,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:16,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:16,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:16,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221016422] [2024-10-31 22:07:16,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221016422] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:07:16,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:07:16,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:07:16,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596182381] [2024-10-31 22:07:16,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:07:16,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:07:16,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:07:16,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:07:16,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:07:16,470 INFO L87 Difference]: Start difference. First operand 16511 states and 23555 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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) [2024-10-31 22:07:16,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:07:16,712 INFO L93 Difference]: Finished difference Result 40326 states and 57648 transitions. [2024-10-31 22:07:16,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:07:16,713 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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 153 [2024-10-31 22:07:16,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:07:16,762 INFO L225 Difference]: With dead ends: 40326 [2024-10-31 22:07:16,762 INFO L226 Difference]: Without dead ends: 24622 [2024-10-31 22:07:16,772 INFO L431 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 [2024-10-31 22:07:16,773 INFO L432 NwaCegarLoop]: 730 mSDtfsCounter, 329 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 1096 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:07:16,774 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 1096 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:07:16,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24622 states. [2024-10-31 22:07:17,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24622 to 24620. [2024-10-31 22:07:17,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24620 states, 24619 states have (on average 1.4080994353954264) internal successors, (34666), 24619 states have internal predecessors, (34666), 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) [2024-10-31 22:07:17,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24620 states to 24620 states and 34666 transitions. [2024-10-31 22:07:17,293 INFO L78 Accepts]: Start accepts. Automaton has 24620 states and 34666 transitions. Word has length 153 [2024-10-31 22:07:17,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:07:17,294 INFO L471 AbstractCegarLoop]: Abstraction has 24620 states and 34666 transitions. [2024-10-31 22:07:17,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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) [2024-10-31 22:07:17,294 INFO L276 IsEmpty]: Start isEmpty. Operand 24620 states and 34666 transitions. [2024-10-31 22:07:17,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-10-31 22:07:17,316 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:07:17,316 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:07:17,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-31 22:07:17,317 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:07:17,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:17,318 INFO L85 PathProgramCache]: Analyzing trace with hash -95330796, now seen corresponding path program 1 times [2024-10-31 22:07:17,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:17,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011207142] [2024-10-31 22:07:17,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:17,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:17,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:17,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:17,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:17,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011207142] [2024-10-31 22:07:17,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011207142] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:07:17,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:07:17,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:07:17,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403013372] [2024-10-31 22:07:17,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:07:17,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:07:17,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:07:17,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:07:17,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:07:17,998 INFO L87 Difference]: Start difference. First operand 24620 states and 34666 transitions. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 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) [2024-10-31 22:07:18,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:07:18,163 INFO L93 Difference]: Finished difference Result 40853 states and 57847 transitions. [2024-10-31 22:07:18,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:07:18,164 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 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 159 [2024-10-31 22:07:18,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:07:18,204 INFO L225 Difference]: With dead ends: 40853 [2024-10-31 22:07:18,205 INFO L226 Difference]: Without dead ends: 21771 [2024-10-31 22:07:18,219 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:07:18,219 INFO L432 NwaCegarLoop]: 682 mSDtfsCounter, 676 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 1035 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:07:18,220 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [676 Valid, 1035 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:07:18,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21771 states. [2024-10-31 22:07:18,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21771 to 21493. [2024-10-31 22:07:18,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21493 states, 21492 states have (on average 1.4052205471803463) internal successors, (30201), 21492 states have internal predecessors, (30201), 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) [2024-10-31 22:07:18,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21493 states to 21493 states and 30201 transitions. [2024-10-31 22:07:18,641 INFO L78 Accepts]: Start accepts. Automaton has 21493 states and 30201 transitions. Word has length 159 [2024-10-31 22:07:18,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:07:18,641 INFO L471 AbstractCegarLoop]: Abstraction has 21493 states and 30201 transitions. [2024-10-31 22:07:18,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 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) [2024-10-31 22:07:18,642 INFO L276 IsEmpty]: Start isEmpty. Operand 21493 states and 30201 transitions. [2024-10-31 22:07:18,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-10-31 22:07:18,654 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:07:18,654 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:07:18,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-31 22:07:18,655 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:07:18,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:18,655 INFO L85 PathProgramCache]: Analyzing trace with hash 2124015325, now seen corresponding path program 1 times [2024-10-31 22:07:18,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:18,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850689783] [2024-10-31 22:07:18,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:18,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:18,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:18,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:18,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:18,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850689783] [2024-10-31 22:07:18,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850689783] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:07:18,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:07:18,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:07:18,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134298681] [2024-10-31 22:07:18,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:07:18,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:07:18,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:07:18,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:07:18,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:07:18,877 INFO L87 Difference]: Start difference. First operand 21493 states and 30201 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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) [2024-10-31 22:07:19,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:07:19,056 INFO L93 Difference]: Finished difference Result 47542 states and 66897 transitions. [2024-10-31 22:07:19,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:07:19,056 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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 160 [2024-10-31 22:07:19,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:07:19,124 INFO L225 Difference]: With dead ends: 47542 [2024-10-31 22:07:19,124 INFO L226 Difference]: Without dead ends: 31274 [2024-10-31 22:07:19,142 INFO L431 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 [2024-10-31 22:07:19,142 INFO L432 NwaCegarLoop]: 646 mSDtfsCounter, 374 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 1050 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:07:19,143 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 1050 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:07:19,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31274 states. [2024-10-31 22:07:19,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31274 to 21493. [2024-10-31 22:07:19,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21493 states, 21492 states have (on average 1.405034431416341) internal successors, (30197), 21492 states have internal predecessors, (30197), 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) [2024-10-31 22:07:19,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21493 states to 21493 states and 30197 transitions. [2024-10-31 22:07:19,726 INFO L78 Accepts]: Start accepts. Automaton has 21493 states and 30197 transitions. Word has length 160 [2024-10-31 22:07:19,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:07:19,727 INFO L471 AbstractCegarLoop]: Abstraction has 21493 states and 30197 transitions. [2024-10-31 22:07:19,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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) [2024-10-31 22:07:19,727 INFO L276 IsEmpty]: Start isEmpty. Operand 21493 states and 30197 transitions. [2024-10-31 22:07:19,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-10-31 22:07:19,738 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:07:19,738 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:07:19,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-31 22:07:19,739 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:07:19,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:19,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1413355346, now seen corresponding path program 1 times [2024-10-31 22:07:19,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:19,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825224509] [2024-10-31 22:07:19,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:19,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:19,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:20,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:20,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:20,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825224509] [2024-10-31 22:07:20,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825224509] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:07:20,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:07:20,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:07:20,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259808674] [2024-10-31 22:07:20,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:07:20,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:07:20,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:07:20,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:07:20,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:07:20,239 INFO L87 Difference]: Start difference. First operand 21493 states and 30197 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 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) [2024-10-31 22:07:20,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:07:20,437 INFO L93 Difference]: Finished difference Result 45683 states and 64456 transitions. [2024-10-31 22:07:20,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:07:20,437 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 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 161 [2024-10-31 22:07:20,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:07:20,488 INFO L225 Difference]: With dead ends: 45683 [2024-10-31 22:07:20,488 INFO L226 Difference]: Without dead ends: 29950 [2024-10-31 22:07:20,504 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:07:20,504 INFO L432 NwaCegarLoop]: 665 mSDtfsCounter, 751 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 1357 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:07:20,505 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [751 Valid, 1357 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:07:20,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29950 states. [2024-10-31 22:07:20,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29950 to 21623. [2024-10-31 22:07:20,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21623 states, 21622 states have (on average 1.403431689945426) internal successors, (30345), 21622 states have internal predecessors, (30345), 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) [2024-10-31 22:07:20,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21623 states to 21623 states and 30345 transitions. [2024-10-31 22:07:20,986 INFO L78 Accepts]: Start accepts. Automaton has 21623 states and 30345 transitions. Word has length 161 [2024-10-31 22:07:20,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:07:20,986 INFO L471 AbstractCegarLoop]: Abstraction has 21623 states and 30345 transitions. [2024-10-31 22:07:20,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 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) [2024-10-31 22:07:20,986 INFO L276 IsEmpty]: Start isEmpty. Operand 21623 states and 30345 transitions. [2024-10-31 22:07:20,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-10-31 22:07:20,995 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:07:20,995 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:07:20,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-31 22:07:20,996 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:07:20,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:20,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1608117858, now seen corresponding path program 1 times [2024-10-31 22:07:20,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:20,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492533324] [2024-10-31 22:07:20,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:20,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:21,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:21,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:21,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:21,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492533324] [2024-10-31 22:07:21,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492533324] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:07:21,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:07:21,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:07:21,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602996560] [2024-10-31 22:07:21,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:07:21,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:07:21,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:07:21,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:07:21,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:07:21,089 INFO L87 Difference]: Start difference. First operand 21623 states and 30345 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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) [2024-10-31 22:07:21,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:07:21,208 INFO L93 Difference]: Finished difference Result 42938 states and 60293 transitions. [2024-10-31 22:07:21,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:07:21,208 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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 162 [2024-10-31 22:07:21,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:07:21,241 INFO L225 Difference]: With dead ends: 42938 [2024-10-31 22:07:21,241 INFO L226 Difference]: Without dead ends: 21651 [2024-10-31 22:07:21,255 INFO L431 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 [2024-10-31 22:07:21,256 INFO L432 NwaCegarLoop]: 410 mSDtfsCounter, 0 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:07:21,256 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 814 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:07:21,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21651 states. [2024-10-31 22:07:21,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21651 to 21651. [2024-10-31 22:07:21,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21651 states, 21650 states have (on average 1.4029099307159354) internal successors, (30373), 21650 states have internal predecessors, (30373), 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) [2024-10-31 22:07:22,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21651 states to 21651 states and 30373 transitions. [2024-10-31 22:07:22,012 INFO L78 Accepts]: Start accepts. Automaton has 21651 states and 30373 transitions. Word has length 162 [2024-10-31 22:07:22,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:07:22,013 INFO L471 AbstractCegarLoop]: Abstraction has 21651 states and 30373 transitions. [2024-10-31 22:07:22,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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) [2024-10-31 22:07:22,013 INFO L276 IsEmpty]: Start isEmpty. Operand 21651 states and 30373 transitions. [2024-10-31 22:07:22,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-10-31 22:07:22,022 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:07:22,022 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:07:22,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-31 22:07:22,023 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:07:22,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:22,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1976932778, now seen corresponding path program 1 times [2024-10-31 22:07:22,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:22,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883132837] [2024-10-31 22:07:22,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:22,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:22,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:22,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:22,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:22,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883132837] [2024-10-31 22:07:22,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883132837] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:07:22,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:07:22,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:07:22,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973138592] [2024-10-31 22:07:22,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:07:22,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:07:22,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:07:22,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:07:22,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:07:22,534 INFO L87 Difference]: Start difference. First operand 21651 states and 30373 transitions. Second operand has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 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) [2024-10-31 22:07:22,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:07:22,845 INFO L93 Difference]: Finished difference Result 43560 states and 60986 transitions. [2024-10-31 22:07:22,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:07:22,846 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 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 163 [2024-10-31 22:07:22,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:07:22,879 INFO L225 Difference]: With dead ends: 43560 [2024-10-31 22:07:22,879 INFO L226 Difference]: Without dead ends: 22073 [2024-10-31 22:07:22,894 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:07:22,895 INFO L432 NwaCegarLoop]: 682 mSDtfsCounter, 343 mSDsluCounter, 1631 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 2313 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-31 22:07:22,896 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 2313 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-31 22:07:22,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22073 states. [2024-10-31 22:07:23,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22073 to 21828. [2024-10-31 22:07:23,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21828 states, 21827 states have (on average 1.3991844962660924) internal successors, (30540), 21827 states have internal predecessors, (30540), 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) [2024-10-31 22:07:23,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21828 states to 21828 states and 30540 transitions. [2024-10-31 22:07:23,325 INFO L78 Accepts]: Start accepts. Automaton has 21828 states and 30540 transitions. Word has length 163 [2024-10-31 22:07:23,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:07:23,325 INFO L471 AbstractCegarLoop]: Abstraction has 21828 states and 30540 transitions. [2024-10-31 22:07:23,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 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) [2024-10-31 22:07:23,326 INFO L276 IsEmpty]: Start isEmpty. Operand 21828 states and 30540 transitions. [2024-10-31 22:07:23,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-10-31 22:07:23,335 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:07:23,335 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:07:23,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-31 22:07:23,336 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:07:23,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:23,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1801353677, now seen corresponding path program 1 times [2024-10-31 22:07:23,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:23,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758423978] [2024-10-31 22:07:23,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:23,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:23,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:23,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:23,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:23,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758423978] [2024-10-31 22:07:23,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758423978] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:07:23,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:07:23,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:07:23,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499735021] [2024-10-31 22:07:23,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:07:23,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:07:23,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:07:23,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:07:23,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:07:23,915 INFO L87 Difference]: Start difference. First operand 21828 states and 30540 transitions. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 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) [2024-10-31 22:07:24,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:07:24,067 INFO L93 Difference]: Finished difference Result 36904 states and 51609 transitions. [2024-10-31 22:07:24,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:07:24,068 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 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 163 [2024-10-31 22:07:24,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:07:24,098 INFO L225 Difference]: With dead ends: 36904 [2024-10-31 22:07:24,098 INFO L226 Difference]: Without dead ends: 18939 [2024-10-31 22:07:24,114 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:07:24,115 INFO L432 NwaCegarLoop]: 427 mSDtfsCounter, 3 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:07:24,116 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1253 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:07:24,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18939 states. [2024-10-31 22:07:24,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18939 to 18930. [2024-10-31 22:07:24,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18930 states, 18929 states have (on average 1.3954778382376247) internal successors, (26415), 18929 states have internal predecessors, (26415), 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) [2024-10-31 22:07:24,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18930 states to 18930 states and 26415 transitions. [2024-10-31 22:07:24,612 INFO L78 Accepts]: Start accepts. Automaton has 18930 states and 26415 transitions. Word has length 163 [2024-10-31 22:07:24,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:07:24,612 INFO L471 AbstractCegarLoop]: Abstraction has 18930 states and 26415 transitions. [2024-10-31 22:07:24,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 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) [2024-10-31 22:07:24,613 INFO L276 IsEmpty]: Start isEmpty. Operand 18930 states and 26415 transitions. [2024-10-31 22:07:24,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-10-31 22:07:24,627 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:07:24,627 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:07:24,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-31 22:07:24,628 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:07:24,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:24,628 INFO L85 PathProgramCache]: Analyzing trace with hash -570891857, now seen corresponding path program 1 times [2024-10-31 22:07:24,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:24,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644795377] [2024-10-31 22:07:24,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:24,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:24,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:24,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:24,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:24,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644795377] [2024-10-31 22:07:24,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644795377] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:07:24,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:07:24,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:07:24,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812823177] [2024-10-31 22:07:24,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:07:24,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:07:24,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:07:24,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:07:24,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:07:24,854 INFO L87 Difference]: Start difference. First operand 18930 states and 26415 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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) [2024-10-31 22:07:25,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:07:25,002 INFO L93 Difference]: Finished difference Result 35926 states and 50092 transitions. [2024-10-31 22:07:25,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:07:25,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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 167 [2024-10-31 22:07:25,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:07:25,033 INFO L225 Difference]: With dead ends: 35926 [2024-10-31 22:07:25,033 INFO L226 Difference]: Without dead ends: 26232 [2024-10-31 22:07:25,045 INFO L431 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 [2024-10-31 22:07:25,046 INFO L432 NwaCegarLoop]: 690 mSDtfsCounter, 361 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:07:25,046 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 1090 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:07:25,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26232 states. [2024-10-31 22:07:25,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26232 to 18930. [2024-10-31 22:07:25,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18930 states, 18929 states have (on average 1.3952136932748693) internal successors, (26410), 18929 states have internal predecessors, (26410), 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) [2024-10-31 22:07:25,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18930 states to 18930 states and 26410 transitions. [2024-10-31 22:07:25,390 INFO L78 Accepts]: Start accepts. Automaton has 18930 states and 26410 transitions. Word has length 167 [2024-10-31 22:07:25,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:07:25,391 INFO L471 AbstractCegarLoop]: Abstraction has 18930 states and 26410 transitions. [2024-10-31 22:07:25,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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) [2024-10-31 22:07:25,391 INFO L276 IsEmpty]: Start isEmpty. Operand 18930 states and 26410 transitions. [2024-10-31 22:07:25,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-10-31 22:07:25,400 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:07:25,400 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:07:25,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-31 22:07:25,401 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:07:25,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:25,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1487758919, now seen corresponding path program 1 times [2024-10-31 22:07:25,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:25,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907201970] [2024-10-31 22:07:25,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:25,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:25,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat