./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label08.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951be83c-0678-4de8-a540-01c440143f80/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951be83c-0678-4de8-a540-01c440143f80/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951be83c-0678-4de8-a540-01c440143f80/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951be83c-0678-4de8-a540-01c440143f80/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label08.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951be83c-0678-4de8-a540-01c440143f80/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951be83c-0678-4de8-a540-01c440143f80/bin/uautomizer-verify-BQ2R08f2Ya --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 fa5f95a04d6083abdc8e62e4666afd780988fdaed849d97770096c71104c7886 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 06:37:16,167 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:37:16,228 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951be83c-0678-4de8-a540-01c440143f80/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 06:37:16,232 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:37:16,232 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:37:16,255 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:37:16,255 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:37:16,256 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:37:16,256 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 06:37:16,257 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 06:37:16,257 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 06:37:16,258 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 06:37:16,259 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:37:16,259 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:37:16,260 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:37:16,260 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:37:16,261 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 06:37:16,261 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 06:37:16,262 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 06:37:16,262 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 06:37:16,263 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:37:16,265 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 06:37:16,265 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 06:37:16,266 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 06:37:16,266 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 06:37:16,267 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 06:37:16,267 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:37:16,268 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:37:16,268 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:37:16,268 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 06:37:16,269 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 06:37:16,269 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:37:16,269 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:37:16,270 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 06:37:16,270 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 06:37:16,270 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 06:37:16,270 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 06:37:16,270 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 06:37:16,270 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 06:37:16,271 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 06:37:16,271 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 06:37:16,271 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 06:37:16,271 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_951be83c-0678-4de8-a540-01c440143f80/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951be83c-0678-4de8-a540-01c440143f80/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa5f95a04d6083abdc8e62e4666afd780988fdaed849d97770096c71104c7886 [2023-11-29 06:37:16,531 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:37:16,551 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:37:16,554 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:37:16,555 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:37:16,555 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:37:16,557 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951be83c-0678-4de8-a540-01c440143f80/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label08.c [2023-11-29 06:37:19,291 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:37:19,747 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:37:19,747 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951be83c-0678-4de8-a540-01c440143f80/sv-benchmarks/c/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label08.c [2023-11-29 06:37:19,786 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951be83c-0678-4de8-a540-01c440143f80/bin/uautomizer-verify-BQ2R08f2Ya/data/1c5f4f817/7d5d1089bd0a42f99c556dbd166abe52/FLAG6c7fc1a2f [2023-11-29 06:37:19,800 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951be83c-0678-4de8-a540-01c440143f80/bin/uautomizer-verify-BQ2R08f2Ya/data/1c5f4f817/7d5d1089bd0a42f99c556dbd166abe52 [2023-11-29 06:37:19,802 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:37:19,804 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:37:19,805 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:37:19,805 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:37:19,810 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:37:19,810 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:37:19" (1/1) ... [2023-11-29 06:37:19,811 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b4d38f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:37:19, skipping insertion in model container [2023-11-29 06:37:19,812 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:37:19" (1/1) ... [2023-11-29 06:37:19,949 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:37:20,261 WARN L240 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_951be83c-0678-4de8-a540-01c440143f80/sv-benchmarks/c/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label08.c[20426,20439] [2023-11-29 06:37:20,294 WARN L240 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_951be83c-0678-4de8-a540-01c440143f80/sv-benchmarks/c/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label08.c[23933,23946] [2023-11-29 06:37:20,939 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:37:20,949 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 06:37:20,988 WARN L240 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_951be83c-0678-4de8-a540-01c440143f80/sv-benchmarks/c/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label08.c[20426,20439] [2023-11-29 06:37:20,994 WARN L240 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_951be83c-0678-4de8-a540-01c440143f80/sv-benchmarks/c/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label08.c[23933,23946] [2023-11-29 06:37:21,417 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:37:21,441 INFO L206 MainTranslator]: Completed translation [2023-11-29 06:37:21,441 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:37:21 WrapperNode [2023-11-29 06:37:21,442 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:37:21,442 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 06:37:21,443 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 06:37:21,443 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 06:37:21,448 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:37:21" (1/1) ... [2023-11-29 06:37:21,490 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:37:21" (1/1) ... [2023-11-29 06:37:21,761 INFO L138 Inliner]: procedures = 38, calls = 24, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 5213 [2023-11-29 06:37:21,761 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 06:37:21,762 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 06:37:21,762 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 06:37:21,762 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 06:37:21,773 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:37:21" (1/1) ... [2023-11-29 06:37:21,773 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:37:21" (1/1) ... [2023-11-29 06:37:21,869 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:37:21" (1/1) ... [2023-11-29 06:37:22,030 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]. [2023-11-29 06:37:22,031 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:37:21" (1/1) ... [2023-11-29 06:37:22,031 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:37:21" (1/1) ... [2023-11-29 06:37:22,253 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:37:21" (1/1) ... [2023-11-29 06:37:22,279 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:37:21" (1/1) ... [2023-11-29 06:37:22,325 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:37:21" (1/1) ... [2023-11-29 06:37:22,345 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:37:21" (1/1) ... [2023-11-29 06:37:22,412 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 06:37:22,413 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 06:37:22,413 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 06:37:22,413 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 06:37:22,414 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:37:21" (1/1) ... [2023-11-29 06:37:22,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:37:22,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951be83c-0678-4de8-a540-01c440143f80/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:37:22,442 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951be83c-0678-4de8-a540-01c440143f80/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 06:37:22,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951be83c-0678-4de8-a540-01c440143f80/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 06:37:22,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 06:37:22,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 06:37:22,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 06:37:22,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 06:37:22,583 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 06:37:22,585 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 06:37:27,090 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 06:37:27,148 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 06:37:27,149 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 06:37:27,150 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:37:27 BoogieIcfgContainer [2023-11-29 06:37:27,150 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 06:37:27,153 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 06:37:27,153 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 06:37:27,156 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 06:37:27,156 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:37:19" (1/3) ... [2023-11-29 06:37:27,157 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f1a21ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:37:27, skipping insertion in model container [2023-11-29 06:37:27,157 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:37:21" (2/3) ... [2023-11-29 06:37:27,157 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f1a21ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:37:27, skipping insertion in model container [2023-11-29 06:37:27,157 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:37:27" (3/3) ... [2023-11-29 06:37:27,158 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label08.c [2023-11-29 06:37:27,176 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 06:37:27,177 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 06:37:27,249 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 06:37:27,255 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@f34c0eb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 06:37:27,255 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 06:37:27,265 INFO L276 IsEmpty]: Start isEmpty. Operand has 865 states, 862 states have (on average 1.9721577726218098) internal successors, (1700), 864 states have internal predecessors, (1700), 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) [2023-11-29 06:37:27,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-29 06:37:27,273 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:37:27,274 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:37:27,275 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:37:27,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:37:27,280 INFO L85 PathProgramCache]: Analyzing trace with hash -2135335152, now seen corresponding path program 1 times [2023-11-29 06:37:27,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:37:27,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393622572] [2023-11-29 06:37:27,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:37:27,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:37:27,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:37:27,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:37:27,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:37:27,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393622572] [2023-11-29 06:37:27,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393622572] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:37:27,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:37:27,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:37:27,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413090799] [2023-11-29 06:37:27,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:37:27,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 06:37:27,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:37:27,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 06:37:27,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 06:37:27,540 INFO L87 Difference]: Start difference. First operand has 865 states, 862 states have (on average 1.9721577726218098) internal successors, (1700), 864 states have internal predecessors, (1700), 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 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 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) [2023-11-29 06:37:27,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:37:27,629 INFO L93 Difference]: Finished difference Result 1676 states and 3294 transitions. [2023-11-29 06:37:27,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 06:37:27,631 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 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 25 [2023-11-29 06:37:27,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:37:27,652 INFO L225 Difference]: With dead ends: 1676 [2023-11-29 06:37:27,652 INFO L226 Difference]: Without dead ends: 861 [2023-11-29 06:37:27,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 06:37:27,662 INFO L413 NwaCegarLoop]: 1629 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1629 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 [2023-11-29 06:37:27,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1629 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:37:27,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2023-11-29 06:37:27,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 861. [2023-11-29 06:37:27,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 859 states have (on average 1.8963911525029105) internal successors, (1629), 860 states have internal predecessors, (1629), 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) [2023-11-29 06:37:27,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1629 transitions. [2023-11-29 06:37:27,746 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1629 transitions. Word has length 25 [2023-11-29 06:37:27,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:37:27,747 INFO L495 AbstractCegarLoop]: Abstraction has 861 states and 1629 transitions. [2023-11-29 06:37:27,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 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) [2023-11-29 06:37:27,747 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1629 transitions. [2023-11-29 06:37:27,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-29 06:37:27,749 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:37:27,749 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:37:27,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 06:37:27,749 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:37:27,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:37:27,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1712633326, now seen corresponding path program 1 times [2023-11-29 06:37:27,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:37:27,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190281775] [2023-11-29 06:37:27,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:37:27,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:37:27,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:37:28,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:37:28,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:37:28,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190281775] [2023-11-29 06:37:28,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190281775] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:37:28,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:37:28,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 06:37:28,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681701230] [2023-11-29 06:37:28,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:37:28,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:37:28,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:37:28,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:37:28,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:37:28,086 INFO L87 Difference]: Start difference. First operand 861 states and 1629 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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) [2023-11-29 06:37:28,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:37:28,199 INFO L93 Difference]: Finished difference Result 917 states and 1718 transitions. [2023-11-29 06:37:28,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:37:28,199 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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 25 [2023-11-29 06:37:28,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:37:28,206 INFO L225 Difference]: With dead ends: 917 [2023-11-29 06:37:28,206 INFO L226 Difference]: Without dead ends: 861 [2023-11-29 06:37:28,207 INFO L412 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 [2023-11-29 06:37:28,208 INFO L413 NwaCegarLoop]: 1626 mSDtfsCounter, 0 mSDsluCounter, 3198 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4824 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:37:28,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4824 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:37:28,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2023-11-29 06:37:28,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 861. [2023-11-29 06:37:28,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 859 states have (on average 1.838183934807916) internal successors, (1579), 860 states have internal predecessors, (1579), 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) [2023-11-29 06:37:28,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1579 transitions. [2023-11-29 06:37:28,236 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1579 transitions. Word has length 25 [2023-11-29 06:37:28,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:37:28,237 INFO L495 AbstractCegarLoop]: Abstraction has 861 states and 1579 transitions. [2023-11-29 06:37:28,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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) [2023-11-29 06:37:28,237 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1579 transitions. [2023-11-29 06:37:28,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-29 06:37:28,238 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:37:28,238 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:37:28,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 06:37:28,239 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:37:28,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:37:28,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1424651870, now seen corresponding path program 1 times [2023-11-29 06:37:28,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:37:28,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609504856] [2023-11-29 06:37:28,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:37:28,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:37:28,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:37:28,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:37:28,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:37:28,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609504856] [2023-11-29 06:37:28,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609504856] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:37:28,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:37:28,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:37:28,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196347290] [2023-11-29 06:37:28,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:37:28,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:37:28,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:37:28,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:37:28,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:37:28,313 INFO L87 Difference]: Start difference. First operand 861 states and 1579 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 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) [2023-11-29 06:37:31,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:37:31,925 INFO L93 Difference]: Finished difference Result 2365 states and 4452 transitions. [2023-11-29 06:37:31,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:37:31,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 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 29 [2023-11-29 06:37:31,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:37:31,935 INFO L225 Difference]: With dead ends: 2365 [2023-11-29 06:37:31,935 INFO L226 Difference]: Without dead ends: 1612 [2023-11-29 06:37:31,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:37:31,938 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 904 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2443 mSolverCounterSat, 704 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 3147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 704 IncrementalHoareTripleChecker+Valid, 2443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-29 06:37:31,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [904 Valid, 223 Invalid, 3147 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [704 Valid, 2443 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-29 06:37:31,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1612 states. [2023-11-29 06:37:31,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1612 to 1612. [2023-11-29 06:37:31,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1612 states, 1610 states have (on average 1.831055900621118) internal successors, (2948), 1611 states have internal predecessors, (2948), 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) [2023-11-29 06:37:31,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1612 states to 1612 states and 2948 transitions. [2023-11-29 06:37:31,980 INFO L78 Accepts]: Start accepts. Automaton has 1612 states and 2948 transitions. Word has length 29 [2023-11-29 06:37:31,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:37:31,980 INFO L495 AbstractCegarLoop]: Abstraction has 1612 states and 2948 transitions. [2023-11-29 06:37:31,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 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) [2023-11-29 06:37:31,981 INFO L276 IsEmpty]: Start isEmpty. Operand 1612 states and 2948 transitions. [2023-11-29 06:37:31,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-29 06:37:31,984 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:37:31,985 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:37:31,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 06:37:31,985 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:37:31,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:37:31,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1559562279, now seen corresponding path program 1 times [2023-11-29 06:37:31,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:37:31,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912590111] [2023-11-29 06:37:31,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:37:31,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:37:32,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:37:32,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:37:32,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:37:32,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912590111] [2023-11-29 06:37:32,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912590111] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:37:32,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:37:32,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 06:37:32,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235783921] [2023-11-29 06:37:32,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:37:32,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 06:37:32,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:37:32,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 06:37:32,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:37:32,246 INFO L87 Difference]: Start difference. First operand 1612 states and 2948 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 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) [2023-11-29 06:37:32,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:37:32,773 INFO L93 Difference]: Finished difference Result 2354 states and 4152 transitions. [2023-11-29 06:37:32,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 06:37:32,774 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 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 74 [2023-11-29 06:37:32,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:37:32,788 INFO L225 Difference]: With dead ends: 2354 [2023-11-29 06:37:32,788 INFO L226 Difference]: Without dead ends: 2301 [2023-11-29 06:37:32,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2023-11-29 06:37:32,791 INFO L413 NwaCegarLoop]: 1572 mSDtfsCounter, 11475 mSDsluCounter, 3464 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11475 SdHoareTripleChecker+Valid, 5036 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:37:32,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11475 Valid, 5036 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 06:37:32,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2301 states. [2023-11-29 06:37:32,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2301 to 1663. [2023-11-29 06:37:32,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1663 states, 1661 states have (on average 1.8248043347381095) internal successors, (3031), 1662 states have internal predecessors, (3031), 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) [2023-11-29 06:37:32,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1663 states to 1663 states and 3031 transitions. [2023-11-29 06:37:32,843 INFO L78 Accepts]: Start accepts. Automaton has 1663 states and 3031 transitions. Word has length 74 [2023-11-29 06:37:32,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:37:32,843 INFO L495 AbstractCegarLoop]: Abstraction has 1663 states and 3031 transitions. [2023-11-29 06:37:32,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 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) [2023-11-29 06:37:32,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1663 states and 3031 transitions. [2023-11-29 06:37:32,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-29 06:37:32,846 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:37:32,846 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:37:32,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 06:37:32,847 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:37:32,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:37:32,847 INFO L85 PathProgramCache]: Analyzing trace with hash -327839241, now seen corresponding path program 1 times [2023-11-29 06:37:32,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:37:32,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560601591] [2023-11-29 06:37:32,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:37:32,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:37:32,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:37:32,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:37:32,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:37:32,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560601591] [2023-11-29 06:37:32,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560601591] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:37:32,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:37:32,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:37:32,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002480101] [2023-11-29 06:37:32,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:37:32,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:37:32,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:37:32,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:37:32,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:37:32,945 INFO L87 Difference]: Start difference. First operand 1663 states and 3031 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2023-11-29 06:37:32,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:37:32,990 INFO L93 Difference]: Finished difference Result 1860 states and 3350 transitions. [2023-11-29 06:37:32,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:37:32,991 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 76 [2023-11-29 06:37:32,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:37:33,002 INFO L225 Difference]: With dead ends: 1860 [2023-11-29 06:37:33,003 INFO L226 Difference]: Without dead ends: 1756 [2023-11-29 06:37:33,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:37:33,005 INFO L413 NwaCegarLoop]: 1574 mSDtfsCounter, 1496 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1654 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:37:33,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 1654 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:37:33,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1756 states. [2023-11-29 06:37:33,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1756 to 1754. [2023-11-29 06:37:33,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1754 states, 1752 states have (on average 1.8133561643835616) internal successors, (3177), 1753 states have internal predecessors, (3177), 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) [2023-11-29 06:37:33,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1754 states to 1754 states and 3177 transitions. [2023-11-29 06:37:33,054 INFO L78 Accepts]: Start accepts. Automaton has 1754 states and 3177 transitions. Word has length 76 [2023-11-29 06:37:33,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:37:33,055 INFO L495 AbstractCegarLoop]: Abstraction has 1754 states and 3177 transitions. [2023-11-29 06:37:33,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2023-11-29 06:37:33,055 INFO L276 IsEmpty]: Start isEmpty. Operand 1754 states and 3177 transitions. [2023-11-29 06:37:33,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-29 06:37:33,056 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:37:33,057 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:37:33,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 06:37:33,057 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:37:33,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:37:33,057 INFO L85 PathProgramCache]: Analyzing trace with hash -325694289, now seen corresponding path program 1 times [2023-11-29 06:37:33,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:37:33,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854667212] [2023-11-29 06:37:33,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:37:33,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:37:33,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:37:33,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:37:33,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:37:33,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854667212] [2023-11-29 06:37:33,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854667212] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:37:33,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:37:33,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 06:37:33,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880952301] [2023-11-29 06:37:33,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:37:33,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 06:37:33,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:37:33,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 06:37:33,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:37:33,502 INFO L87 Difference]: Start difference. First operand 1754 states and 3177 transitions. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 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) [2023-11-29 06:37:33,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:37:33,909 INFO L93 Difference]: Finished difference Result 1951 states and 3493 transitions. [2023-11-29 06:37:33,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 06:37:33,909 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 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 76 [2023-11-29 06:37:33,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:37:33,920 INFO L225 Difference]: With dead ends: 1951 [2023-11-29 06:37:33,921 INFO L226 Difference]: Without dead ends: 1756 [2023-11-29 06:37:33,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2023-11-29 06:37:33,923 INFO L413 NwaCegarLoop]: 1567 mSDtfsCounter, 9042 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9042 SdHoareTripleChecker+Valid, 2062 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:37:33,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9042 Valid, 2062 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:37:33,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1756 states. [2023-11-29 06:37:33,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1756 to 1754. [2023-11-29 06:37:33,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1754 states, 1752 states have (on average 1.812214611872146) internal successors, (3175), 1753 states have internal predecessors, (3175), 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) [2023-11-29 06:37:33,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1754 states to 1754 states and 3175 transitions. [2023-11-29 06:37:33,971 INFO L78 Accepts]: Start accepts. Automaton has 1754 states and 3175 transitions. Word has length 76 [2023-11-29 06:37:33,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:37:33,972 INFO L495 AbstractCegarLoop]: Abstraction has 1754 states and 3175 transitions. [2023-11-29 06:37:33,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 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) [2023-11-29 06:37:33,972 INFO L276 IsEmpty]: Start isEmpty. Operand 1754 states and 3175 transitions. [2023-11-29 06:37:33,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-29 06:37:33,973 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:37:33,973 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:37:33,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 06:37:33,974 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:37:33,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:37:33,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1634971720, now seen corresponding path program 1 times [2023-11-29 06:37:33,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:37:33,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176552374] [2023-11-29 06:37:33,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:37:33,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:37:34,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:37:34,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:37:34,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:37:34,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176552374] [2023-11-29 06:37:34,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176552374] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:37:34,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:37:34,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 06:37:34,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181176674] [2023-11-29 06:37:34,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:37:34,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:37:34,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:37:34,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:37:34,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:37:34,207 INFO L87 Difference]: Start difference. First operand 1754 states and 3175 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:37:34,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:37:34,261 INFO L93 Difference]: Finished difference Result 1762 states and 3184 transitions. [2023-11-29 06:37:34,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:37:34,261 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-11-29 06:37:34,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:37:34,273 INFO L225 Difference]: With dead ends: 1762 [2023-11-29 06:37:34,273 INFO L226 Difference]: Without dead ends: 1760 [2023-11-29 06:37:34,274 INFO L412 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 [2023-11-29 06:37:34,274 INFO L413 NwaCegarLoop]: 1575 mSDtfsCounter, 1 mSDsluCounter, 3142 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4717 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:37:34,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4717 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:37:34,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1760 states. [2023-11-29 06:37:34,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1760 to 1758. [2023-11-29 06:37:34,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1758 states, 1756 states have (on average 1.8097949886104783) internal successors, (3178), 1757 states have internal predecessors, (3178), 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) [2023-11-29 06:37:34,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1758 states to 1758 states and 3178 transitions. [2023-11-29 06:37:34,322 INFO L78 Accepts]: Start accepts. Automaton has 1758 states and 3178 transitions. Word has length 77 [2023-11-29 06:37:34,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:37:34,323 INFO L495 AbstractCegarLoop]: Abstraction has 1758 states and 3178 transitions. [2023-11-29 06:37:34,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:37:34,323 INFO L276 IsEmpty]: Start isEmpty. Operand 1758 states and 3178 transitions. [2023-11-29 06:37:34,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 06:37:34,324 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:37:34,324 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:37:34,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 06:37:34,325 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:37:34,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:37:34,325 INFO L85 PathProgramCache]: Analyzing trace with hash -562302993, now seen corresponding path program 1 times [2023-11-29 06:37:34,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:37:34,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850329919] [2023-11-29 06:37:34,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:37:34,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:37:34,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:37:34,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:37:34,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:37:34,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850329919] [2023-11-29 06:37:34,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850329919] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:37:34,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:37:34,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:37:34,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908838773] [2023-11-29 06:37:34,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:37:34,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:37:34,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:37:34,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:37:34,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:37:34,396 INFO L87 Difference]: Start difference. First operand 1758 states and 3178 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2023-11-29 06:37:34,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:37:34,436 INFO L93 Difference]: Finished difference Result 1968 states and 3511 transitions. [2023-11-29 06:37:34,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:37:34,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 78 [2023-11-29 06:37:34,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:37:34,448 INFO L225 Difference]: With dead ends: 1968 [2023-11-29 06:37:34,448 INFO L226 Difference]: Without dead ends: 1860 [2023-11-29 06:37:34,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:37:34,449 INFO L413 NwaCegarLoop]: 1646 mSDtfsCounter, 1514 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 1732 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:37:34,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1514 Valid, 1732 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:37:34,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1860 states. [2023-11-29 06:37:34,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1860 to 1858. [2023-11-29 06:37:34,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1858 states, 1856 states have (on average 1.796875) internal successors, (3335), 1857 states have internal predecessors, (3335), 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) [2023-11-29 06:37:34,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1858 states to 1858 states and 3335 transitions. [2023-11-29 06:37:34,501 INFO L78 Accepts]: Start accepts. Automaton has 1858 states and 3335 transitions. Word has length 78 [2023-11-29 06:37:34,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:37:34,502 INFO L495 AbstractCegarLoop]: Abstraction has 1858 states and 3335 transitions. [2023-11-29 06:37:34,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2023-11-29 06:37:34,502 INFO L276 IsEmpty]: Start isEmpty. Operand 1858 states and 3335 transitions. [2023-11-29 06:37:34,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 06:37:34,503 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:37:34,503 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:37:34,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 06:37:34,503 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:37:34,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:37:34,504 INFO L85 PathProgramCache]: Analyzing trace with hash 193081071, now seen corresponding path program 1 times [2023-11-29 06:37:34,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:37:34,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981267950] [2023-11-29 06:37:34,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:37:34,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:37:34,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:37:34,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:37:34,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:37:34,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981267950] [2023-11-29 06:37:34,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981267950] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:37:34,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:37:34,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:37:34,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722179493] [2023-11-29 06:37:34,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:37:34,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:37:34,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:37:34,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:37:34,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:37:34,571 INFO L87 Difference]: Start difference. First operand 1858 states and 3335 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2023-11-29 06:37:34,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:37:34,618 INFO L93 Difference]: Finished difference Result 2428 states and 4235 transitions. [2023-11-29 06:37:34,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:37:34,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 78 [2023-11-29 06:37:34,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:37:34,632 INFO L225 Difference]: With dead ends: 2428 [2023-11-29 06:37:34,632 INFO L226 Difference]: Without dead ends: 2131 [2023-11-29 06:37:34,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:37:34,634 INFO L413 NwaCegarLoop]: 1648 mSDtfsCounter, 1512 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 1738 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:37:34,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1512 Valid, 1738 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:37:34,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2131 states. [2023-11-29 06:37:34,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2131 to 2129. [2023-11-29 06:37:34,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2129 states, 2127 states have (on average 1.7663375646450399) internal successors, (3757), 2128 states have internal predecessors, (3757), 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) [2023-11-29 06:37:34,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2129 states to 2129 states and 3757 transitions. [2023-11-29 06:37:34,696 INFO L78 Accepts]: Start accepts. Automaton has 2129 states and 3757 transitions. Word has length 78 [2023-11-29 06:37:34,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:37:34,697 INFO L495 AbstractCegarLoop]: Abstraction has 2129 states and 3757 transitions. [2023-11-29 06:37:34,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2023-11-29 06:37:34,697 INFO L276 IsEmpty]: Start isEmpty. Operand 2129 states and 3757 transitions. [2023-11-29 06:37:34,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 06:37:34,698 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:37:34,698 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:37:34,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 06:37:34,698 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:37:34,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:37:34,699 INFO L85 PathProgramCache]: Analyzing trace with hash -217305617, now seen corresponding path program 1 times [2023-11-29 06:37:34,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:37:34,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663810901] [2023-11-29 06:37:34,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:37:34,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:37:34,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:37:34,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:37:34,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:37:34,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663810901] [2023-11-29 06:37:34,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663810901] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:37:34,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:37:34,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:37:34,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554508284] [2023-11-29 06:37:34,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:37:34,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:37:34,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:37:34,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:37:34,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:37:34,798 INFO L87 Difference]: Start difference. First operand 2129 states and 3757 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2023-11-29 06:37:34,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:37:34,854 INFO L93 Difference]: Finished difference Result 3217 states and 5459 transitions. [2023-11-29 06:37:34,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:37:34,854 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 78 [2023-11-29 06:37:34,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:37:34,870 INFO L225 Difference]: With dead ends: 3217 [2023-11-29 06:37:34,870 INFO L226 Difference]: Without dead ends: 2649 [2023-11-29 06:37:34,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:37:34,872 INFO L413 NwaCegarLoop]: 1646 mSDtfsCounter, 1510 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 1740 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:37:34,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1510 Valid, 1740 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:37:34,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2649 states. [2023-11-29 06:37:34,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2649 to 2647. [2023-11-29 06:37:34,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2647 states, 2645 states have (on average 1.7213610586011343) internal successors, (4553), 2646 states have internal predecessors, (4553), 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) [2023-11-29 06:37:34,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2647 states to 2647 states and 4553 transitions. [2023-11-29 06:37:34,958 INFO L78 Accepts]: Start accepts. Automaton has 2647 states and 4553 transitions. Word has length 78 [2023-11-29 06:37:34,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:37:34,959 INFO L495 AbstractCegarLoop]: Abstraction has 2647 states and 4553 transitions. [2023-11-29 06:37:34,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2023-11-29 06:37:34,959 INFO L276 IsEmpty]: Start isEmpty. Operand 2647 states and 4553 transitions. [2023-11-29 06:37:34,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 06:37:34,960 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:37:34,960 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:37:34,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 06:37:34,960 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:37:34,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:37:34,961 INFO L85 PathProgramCache]: Analyzing trace with hash -485888785, now seen corresponding path program 1 times [2023-11-29 06:37:34,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:37:34,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130518450] [2023-11-29 06:37:34,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:37:34,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:37:34,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:37:35,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:37:35,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:37:35,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130518450] [2023-11-29 06:37:35,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130518450] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:37:35,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:37:35,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:37:35,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342341230] [2023-11-29 06:37:35,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:37:35,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:37:35,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:37:35,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:37:35,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:37:35,030 INFO L87 Difference]: Start difference. First operand 2647 states and 4553 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2023-11-29 06:37:35,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:37:35,110 INFO L93 Difference]: Finished difference Result 4723 states and 7763 transitions. [2023-11-29 06:37:35,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:37:35,110 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 78 [2023-11-29 06:37:35,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:37:35,131 INFO L225 Difference]: With dead ends: 4723 [2023-11-29 06:37:35,131 INFO L226 Difference]: Without dead ends: 3637 [2023-11-29 06:37:35,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:37:35,134 INFO L413 NwaCegarLoop]: 1644 mSDtfsCounter, 1508 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1508 SdHoareTripleChecker+Valid, 1742 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:37:35,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1508 Valid, 1742 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:37:35,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3637 states. [2023-11-29 06:37:35,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3637 to 3635. [2023-11-29 06:37:35,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3635 states, 3633 states have (on average 1.6650151390035783) internal successors, (6049), 3634 states have internal predecessors, (6049), 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) [2023-11-29 06:37:35,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3635 states to 3635 states and 6049 transitions. [2023-11-29 06:37:35,261 INFO L78 Accepts]: Start accepts. Automaton has 3635 states and 6049 transitions. Word has length 78 [2023-11-29 06:37:35,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:37:35,261 INFO L495 AbstractCegarLoop]: Abstraction has 3635 states and 6049 transitions. [2023-11-29 06:37:35,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2023-11-29 06:37:35,262 INFO L276 IsEmpty]: Start isEmpty. Operand 3635 states and 6049 transitions. [2023-11-29 06:37:35,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 06:37:35,263 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:37:35,263 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:37:35,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 06:37:35,263 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:37:35,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:37:35,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1071600913, now seen corresponding path program 1 times [2023-11-29 06:37:35,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:37:35,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826102388] [2023-11-29 06:37:35,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:37:35,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:37:35,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:37:35,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:37:35,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:37:35,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826102388] [2023-11-29 06:37:35,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826102388] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:37:35,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:37:35,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:37:35,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653857027] [2023-11-29 06:37:35,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:37:35,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:37:35,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:37:35,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:37:35,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:37:35,334 INFO L87 Difference]: Start difference. First operand 3635 states and 6049 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2023-11-29 06:37:35,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:37:35,461 INFO L93 Difference]: Finished difference Result 7591 states and 12083 transitions. [2023-11-29 06:37:35,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:37:35,462 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 78 [2023-11-29 06:37:35,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:37:35,486 INFO L225 Difference]: With dead ends: 7591 [2023-11-29 06:37:35,486 INFO L226 Difference]: Without dead ends: 5517 [2023-11-29 06:37:35,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:37:35,490 INFO L413 NwaCegarLoop]: 1632 mSDtfsCounter, 1504 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1738 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:37:35,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 1738 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:37:35,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5517 states. [2023-11-29 06:37:35,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5517 to 5515. [2023-11-29 06:37:35,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5515 states, 5513 states have (on average 1.6051151822963903) internal successors, (8849), 5514 states have internal predecessors, (8849), 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) [2023-11-29 06:37:35,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5515 states to 5515 states and 8849 transitions. [2023-11-29 06:37:35,688 INFO L78 Accepts]: Start accepts. Automaton has 5515 states and 8849 transitions. Word has length 78 [2023-11-29 06:37:35,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:37:35,688 INFO L495 AbstractCegarLoop]: Abstraction has 5515 states and 8849 transitions. [2023-11-29 06:37:35,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2023-11-29 06:37:35,688 INFO L276 IsEmpty]: Start isEmpty. Operand 5515 states and 8849 transitions. [2023-11-29 06:37:35,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 06:37:35,689 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:37:35,689 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:37:35,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 06:37:35,690 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:37:35,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:37:35,690 INFO L85 PathProgramCache]: Analyzing trace with hash -182867473, now seen corresponding path program 1 times [2023-11-29 06:37:35,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:37:35,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372216424] [2023-11-29 06:37:35,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:37:35,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:37:35,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:37:35,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:37:35,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:37:35,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372216424] [2023-11-29 06:37:35,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372216424] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:37:35,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:37:35,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:37:35,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7902947] [2023-11-29 06:37:35,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:37:35,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:37:35,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:37:35,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:37:35,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:37:35,756 INFO L87 Difference]: Start difference. First operand 5515 states and 8849 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2023-11-29 06:37:35,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:37:35,990 INFO L93 Difference]: Finished difference Result 13039 states and 20147 transitions. [2023-11-29 06:37:35,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:37:35,990 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 78 [2023-11-29 06:37:35,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:37:36,010 INFO L225 Difference]: With dead ends: 13039 [2023-11-29 06:37:36,010 INFO L226 Difference]: Without dead ends: 9085 [2023-11-29 06:37:36,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:37:36,017 INFO L413 NwaCegarLoop]: 1630 mSDtfsCounter, 1502 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 1740 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:37:36,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 1740 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:37:36,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9085 states. [2023-11-29 06:37:36,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9085 to 9083. [2023-11-29 06:37:36,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9083 states, 9081 states have (on average 1.5488382336747055) internal successors, (14065), 9082 states have internal predecessors, (14065), 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) [2023-11-29 06:37:36,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9083 states to 9083 states and 14065 transitions. [2023-11-29 06:37:36,331 INFO L78 Accepts]: Start accepts. Automaton has 9083 states and 14065 transitions. Word has length 78 [2023-11-29 06:37:36,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:37:36,332 INFO L495 AbstractCegarLoop]: Abstraction has 9083 states and 14065 transitions. [2023-11-29 06:37:36,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2023-11-29 06:37:36,333 INFO L276 IsEmpty]: Start isEmpty. Operand 9083 states and 14065 transitions. [2023-11-29 06:37:36,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 06:37:36,334 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:37:36,334 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:37:36,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 06:37:36,334 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:37:36,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:37:36,334 INFO L85 PathProgramCache]: Analyzing trace with hash -445944849, now seen corresponding path program 1 times [2023-11-29 06:37:36,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:37:36,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791963976] [2023-11-29 06:37:36,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:37:36,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:37:36,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:37:36,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:37:36,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:37:36,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791963976] [2023-11-29 06:37:36,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791963976] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:37:36,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:37:36,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:37:36,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989162392] [2023-11-29 06:37:36,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:37:36,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:37:36,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:37:36,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:37:36,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:37:36,400 INFO L87 Difference]: Start difference. First operand 9083 states and 14065 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2023-11-29 06:37:36,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:37:36,816 INFO L93 Difference]: Finished difference Result 23359 states and 35123 transitions. [2023-11-29 06:37:36,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:37:36,817 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 78 [2023-11-29 06:37:36,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:37:36,839 INFO L225 Difference]: With dead ends: 23359 [2023-11-29 06:37:36,839 INFO L226 Difference]: Without dead ends: 15837 [2023-11-29 06:37:36,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:37:36,848 INFO L413 NwaCegarLoop]: 1642 mSDtfsCounter, 1506 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1506 SdHoareTripleChecker+Valid, 1744 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:37:36,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1506 Valid, 1744 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:37:36,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15837 states. [2023-11-29 06:37:37,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15837 to 15835. [2023-11-29 06:37:37,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15835 states, 15833 states have (on average 1.498705235899703) internal successors, (23729), 15834 states have internal predecessors, (23729), 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) [2023-11-29 06:37:37,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15835 states to 15835 states and 23729 transitions. [2023-11-29 06:37:37,246 INFO L78 Accepts]: Start accepts. Automaton has 15835 states and 23729 transitions. Word has length 78 [2023-11-29 06:37:37,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:37:37,247 INFO L495 AbstractCegarLoop]: Abstraction has 15835 states and 23729 transitions. [2023-11-29 06:37:37,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2023-11-29 06:37:37,247 INFO L276 IsEmpty]: Start isEmpty. Operand 15835 states and 23729 transitions. [2023-11-29 06:37:37,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-29 06:37:37,249 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:37:37,250 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:37:37,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 06:37:37,250 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:37:37,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:37:37,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1376662403, now seen corresponding path program 1 times [2023-11-29 06:37:37,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:37:37,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453378869] [2023-11-29 06:37:37,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:37:37,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:37:37,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:37:37,371 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:37:37,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:37:37,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453378869] [2023-11-29 06:37:37,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453378869] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:37:37,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:37:37,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:37:37,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535107875] [2023-11-29 06:37:37,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:37:37,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:37:37,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:37:37,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:37:37,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:37:37,373 INFO L87 Difference]: Start difference. First operand 15835 states and 23729 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 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) [2023-11-29 06:37:42,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:37:42,490 INFO L93 Difference]: Finished difference Result 19600 states and 30717 transitions. [2023-11-29 06:37:42,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 06:37:42,490 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 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 94 [2023-11-29 06:37:42,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:37:42,511 INFO L225 Difference]: With dead ends: 19600 [2023-11-29 06:37:42,511 INFO L226 Difference]: Without dead ends: 18096 [2023-11-29 06:37:42,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:37:42,516 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 2592 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 3615 mSolverCounterSat, 1529 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2592 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 5144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1529 IncrementalHoareTripleChecker+Valid, 3615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-11-29 06:37:42,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2592 Valid, 334 Invalid, 5144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1529 Valid, 3615 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-11-29 06:37:42,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18096 states. [2023-11-29 06:37:42,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18096 to 18088. [2023-11-29 06:37:42,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18088 states, 18086 states have (on average 1.4903792989052305) internal successors, (26955), 18087 states have internal predecessors, (26955), 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) [2023-11-29 06:37:42,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18088 states to 18088 states and 26955 transitions. [2023-11-29 06:37:42,938 INFO L78 Accepts]: Start accepts. Automaton has 18088 states and 26955 transitions. Word has length 94 [2023-11-29 06:37:42,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:37:42,938 INFO L495 AbstractCegarLoop]: Abstraction has 18088 states and 26955 transitions. [2023-11-29 06:37:42,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 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) [2023-11-29 06:37:42,939 INFO L276 IsEmpty]: Start isEmpty. Operand 18088 states and 26955 transitions. [2023-11-29 06:37:42,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 06:37:42,944 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:37:42,944 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:37:42,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 06:37:42,945 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:37:42,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:37:42,945 INFO L85 PathProgramCache]: Analyzing trace with hash 559870242, now seen corresponding path program 1 times [2023-11-29 06:37:42,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:37:42,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079630071] [2023-11-29 06:37:42,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:37:42,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:37:42,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:37:43,184 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 06:37:43,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:37:43,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079630071] [2023-11-29 06:37:43,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079630071] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:37:43,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:37:43,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 06:37:43,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985808143] [2023-11-29 06:37:43,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:37:43,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 06:37:43,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:37:43,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 06:37:43,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:37:43,187 INFO L87 Difference]: Start difference. First operand 18088 states and 26955 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 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) [2023-11-29 06:37:45,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:37:45,511 INFO L93 Difference]: Finished difference Result 116600 states and 170899 transitions. [2023-11-29 06:37:45,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 06:37:45,512 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 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 100 [2023-11-29 06:37:45,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:37:45,662 INFO L225 Difference]: With dead ends: 116600 [2023-11-29 06:37:45,663 INFO L226 Difference]: Without dead ends: 106614 [2023-11-29 06:37:45,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-11-29 06:37:45,692 INFO L413 NwaCegarLoop]: 1660 mSDtfsCounter, 9845 mSDsluCounter, 2945 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9845 SdHoareTripleChecker+Valid, 4605 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:37:45,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9845 Valid, 4605 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:37:45,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106614 states. [2023-11-29 06:37:47,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106614 to 30248. [2023-11-29 06:37:47,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30248 states, 30246 states have (on average 1.4730873503934405) internal successors, (44555), 30247 states have internal predecessors, (44555), 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) [2023-11-29 06:37:47,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30248 states to 30248 states and 44555 transitions. [2023-11-29 06:37:47,177 INFO L78 Accepts]: Start accepts. Automaton has 30248 states and 44555 transitions. Word has length 100 [2023-11-29 06:37:47,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:37:47,178 INFO L495 AbstractCegarLoop]: Abstraction has 30248 states and 44555 transitions. [2023-11-29 06:37:47,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 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) [2023-11-29 06:37:47,178 INFO L276 IsEmpty]: Start isEmpty. Operand 30248 states and 44555 transitions. [2023-11-29 06:37:47,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 06:37:47,184 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:37:47,184 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:37:47,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 06:37:47,184 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:37:47,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:37:47,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1315254306, now seen corresponding path program 1 times [2023-11-29 06:37:47,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:37:47,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001605490] [2023-11-29 06:37:47,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:37:47,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:37:47,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:37:47,394 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 06:37:47,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:37:47,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001605490] [2023-11-29 06:37:47,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001605490] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:37:47,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:37:47,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 06:37:47,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967056973] [2023-11-29 06:37:47,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:37:47,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 06:37:47,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:37:47,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 06:37:47,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:37:47,397 INFO L87 Difference]: Start difference. First operand 30248 states and 44555 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 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) [2023-11-29 06:37:50,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:37:50,341 INFO L93 Difference]: Finished difference Result 130872 states and 191635 transitions. [2023-11-29 06:37:50,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 06:37:50,342 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 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 100 [2023-11-29 06:37:50,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:37:50,501 INFO L225 Difference]: With dead ends: 130872 [2023-11-29 06:37:50,501 INFO L226 Difference]: Without dead ends: 116598 [2023-11-29 06:37:50,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-11-29 06:37:50,535 INFO L413 NwaCegarLoop]: 1659 mSDtfsCounter, 9845 mSDsluCounter, 2939 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9845 SdHoareTripleChecker+Valid, 4598 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:37:50,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9845 Valid, 4598 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 06:37:50,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116598 states. [2023-11-29 06:37:52,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116598 to 49512. [2023-11-29 06:37:52,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49512 states, 49510 states have (on average 1.4622298525550395) internal successors, (72395), 49511 states have internal predecessors, (72395), 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) [2023-11-29 06:37:52,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49512 states to 49512 states and 72395 transitions. [2023-11-29 06:37:52,819 INFO L78 Accepts]: Start accepts. Automaton has 49512 states and 72395 transitions. Word has length 100 [2023-11-29 06:37:52,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:37:52,820 INFO L495 AbstractCegarLoop]: Abstraction has 49512 states and 72395 transitions. [2023-11-29 06:37:52,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 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) [2023-11-29 06:37:52,820 INFO L276 IsEmpty]: Start isEmpty. Operand 49512 states and 72395 transitions. [2023-11-29 06:37:52,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 06:37:52,825 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:37:52,825 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:37:52,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 06:37:52,826 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:37:52,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:37:52,826 INFO L85 PathProgramCache]: Analyzing trace with hash 904867618, now seen corresponding path program 1 times [2023-11-29 06:37:52,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:37:52,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152200800] [2023-11-29 06:37:52,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:37:52,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:37:52,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:37:53,000 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 06:37:53,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:37:53,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152200800] [2023-11-29 06:37:53,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152200800] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:37:53,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:37:53,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 06:37:53,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967785423] [2023-11-29 06:37:53,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:37:53,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 06:37:53,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:37:53,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 06:37:53,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:37:53,003 INFO L87 Difference]: Start difference. First operand 49512 states and 72395 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 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) [2023-11-29 06:37:57,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:37:57,126 INFO L93 Difference]: Finished difference Result 145144 states and 212307 transitions. [2023-11-29 06:37:57,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 06:37:57,127 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 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 100 [2023-11-29 06:37:57,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:37:57,281 INFO L225 Difference]: With dead ends: 145144 [2023-11-29 06:37:57,281 INFO L226 Difference]: Without dead ends: 130870 [2023-11-29 06:37:57,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-11-29 06:37:57,315 INFO L413 NwaCegarLoop]: 1657 mSDtfsCounter, 9866 mSDsluCounter, 2879 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9866 SdHoareTripleChecker+Valid, 4536 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:37:57,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9866 Valid, 4536 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:37:57,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130870 states. [2023-11-29 06:38:00,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130870 to 63784. [2023-11-29 06:38:00,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63784 states, 63782 states have (on average 1.459142077702173) internal successors, (93067), 63783 states have internal predecessors, (93067), 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) [2023-11-29 06:38:00,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63784 states to 63784 states and 93067 transitions. [2023-11-29 06:38:00,151 INFO L78 Accepts]: Start accepts. Automaton has 63784 states and 93067 transitions. Word has length 100 [2023-11-29 06:38:00,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:38:00,151 INFO L495 AbstractCegarLoop]: Abstraction has 63784 states and 93067 transitions. [2023-11-29 06:38:00,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 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) [2023-11-29 06:38:00,152 INFO L276 IsEmpty]: Start isEmpty. Operand 63784 states and 93067 transitions. [2023-11-29 06:38:00,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 06:38:00,158 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:38:00,159 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:38:00,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 06:38:00,159 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:38:00,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:38:00,160 INFO L85 PathProgramCache]: Analyzing trace with hash 636284450, now seen corresponding path program 1 times [2023-11-29 06:38:00,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:38:00,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696199491] [2023-11-29 06:38:00,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:38:00,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:38:00,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:38:00,385 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 06:38:00,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:38:00,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696199491] [2023-11-29 06:38:00,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696199491] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:38:00,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:38:00,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 06:38:00,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105687452] [2023-11-29 06:38:00,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:38:00,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 06:38:00,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:38:00,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 06:38:00,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:38:00,387 INFO L87 Difference]: Start difference. First operand 63784 states and 93067 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 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) [2023-11-29 06:38:05,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:38:05,591 INFO L93 Difference]: Finished difference Result 159416 states and 232979 transitions. [2023-11-29 06:38:05,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 06:38:05,592 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 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 100 [2023-11-29 06:38:05,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:38:05,732 INFO L225 Difference]: With dead ends: 159416 [2023-11-29 06:38:05,732 INFO L226 Difference]: Without dead ends: 145142 [2023-11-29 06:38:05,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-11-29 06:38:05,757 INFO L413 NwaCegarLoop]: 1655 mSDtfsCounter, 9955 mSDsluCounter, 2798 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9955 SdHoareTripleChecker+Valid, 4453 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:38:05,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9955 Valid, 4453 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:38:05,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145142 states. [2023-11-29 06:38:08,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145142 to 78056. [2023-11-29 06:38:08,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78056 states, 78054 states have (on average 1.4571834883542163) internal successors, (113739), 78055 states have internal predecessors, (113739), 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) [2023-11-29 06:38:09,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78056 states to 78056 states and 113739 transitions. [2023-11-29 06:38:09,116 INFO L78 Accepts]: Start accepts. Automaton has 78056 states and 113739 transitions. Word has length 100 [2023-11-29 06:38:09,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:38:09,117 INFO L495 AbstractCegarLoop]: Abstraction has 78056 states and 113739 transitions. [2023-11-29 06:38:09,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 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) [2023-11-29 06:38:09,117 INFO L276 IsEmpty]: Start isEmpty. Operand 78056 states and 113739 transitions. [2023-11-29 06:38:09,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 06:38:09,122 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:38:09,122 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:38:09,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 06:38:09,122 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:38:09,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:38:09,123 INFO L85 PathProgramCache]: Analyzing trace with hash 50572322, now seen corresponding path program 1 times [2023-11-29 06:38:09,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:38:09,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738524319] [2023-11-29 06:38:09,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:38:09,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:38:09,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:38:09,337 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 06:38:09,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:38:09,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738524319] [2023-11-29 06:38:09,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738524319] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:38:09,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:38:09,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 06:38:09,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211504322] [2023-11-29 06:38:09,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:38:09,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 06:38:09,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:38:09,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 06:38:09,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:38:09,340 INFO L87 Difference]: Start difference. First operand 78056 states and 113739 transitions. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 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) [2023-11-29 06:38:15,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:38:15,000 INFO L93 Difference]: Finished difference Result 173688 states and 253651 transitions. [2023-11-29 06:38:15,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 06:38:15,001 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 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 100 [2023-11-29 06:38:15,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:38:15,154 INFO L225 Difference]: With dead ends: 173688 [2023-11-29 06:38:15,154 INFO L226 Difference]: Without dead ends: 159414 [2023-11-29 06:38:15,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-11-29 06:38:15,182 INFO L413 NwaCegarLoop]: 1653 mSDtfsCounter, 10036 mSDsluCounter, 2858 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10036 SdHoareTripleChecker+Valid, 4511 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:38:15,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10036 Valid, 4511 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 06:38:15,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159414 states. [2023-11-29 06:38:19,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159414 to 92328. [2023-11-29 06:38:19,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92328 states, 92326 states have (on average 1.4558304269653186) internal successors, (134411), 92327 states have internal predecessors, (134411), 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) [2023-11-29 06:38:19,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92328 states to 92328 states and 134411 transitions. [2023-11-29 06:38:19,218 INFO L78 Accepts]: Start accepts. Automaton has 92328 states and 134411 transitions. Word has length 100 [2023-11-29 06:38:19,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:38:19,218 INFO L495 AbstractCegarLoop]: Abstraction has 92328 states and 134411 transitions. [2023-11-29 06:38:19,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 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) [2023-11-29 06:38:19,218 INFO L276 IsEmpty]: Start isEmpty. Operand 92328 states and 134411 transitions. [2023-11-29 06:38:19,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 06:38:19,223 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:38:19,223 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:38:19,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 06:38:19,224 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:38:19,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:38:19,224 INFO L85 PathProgramCache]: Analyzing trace with hash 939305762, now seen corresponding path program 1 times [2023-11-29 06:38:19,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:38:19,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219609643] [2023-11-29 06:38:19,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:38:19,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:38:19,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:38:19,478 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 06:38:19,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:38:19,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219609643] [2023-11-29 06:38:19,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219609643] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:38:19,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:38:19,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 06:38:19,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050302412] [2023-11-29 06:38:19,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:38:19,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 06:38:19,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:38:19,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 06:38:19,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:38:19,483 INFO L87 Difference]: Start difference. First operand 92328 states and 134411 transitions. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 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) [2023-11-29 06:38:25,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:38:25,517 INFO L93 Difference]: Finished difference Result 187960 states and 274323 transitions. [2023-11-29 06:38:25,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 06:38:25,518 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 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 100 [2023-11-29 06:38:25,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:38:25,715 INFO L225 Difference]: With dead ends: 187960 [2023-11-29 06:38:25,715 INFO L226 Difference]: Without dead ends: 173686 [2023-11-29 06:38:25,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-11-29 06:38:25,741 INFO L413 NwaCegarLoop]: 1653 mSDtfsCounter, 9909 mSDsluCounter, 2867 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9909 SdHoareTripleChecker+Valid, 4520 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:38:25,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9909 Valid, 4520 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:38:25,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173686 states. [2023-11-29 06:38:30,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173686 to 106600. [2023-11-29 06:38:30,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106600 states, 106598 states have (on average 1.45483967804274) internal successors, (155083), 106599 states have internal predecessors, (155083), 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) [2023-11-29 06:38:30,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106600 states to 106600 states and 155083 transitions. [2023-11-29 06:38:30,510 INFO L78 Accepts]: Start accepts. Automaton has 106600 states and 155083 transitions. Word has length 100 [2023-11-29 06:38:30,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:38:30,510 INFO L495 AbstractCegarLoop]: Abstraction has 106600 states and 155083 transitions. [2023-11-29 06:38:30,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 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) [2023-11-29 06:38:30,510 INFO L276 IsEmpty]: Start isEmpty. Operand 106600 states and 155083 transitions. [2023-11-29 06:38:30,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 06:38:30,515 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:38:30,515 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:38:30,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 06:38:30,516 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:38:30,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:38:30,516 INFO L85 PathProgramCache]: Analyzing trace with hash 676228386, now seen corresponding path program 1 times [2023-11-29 06:38:30,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:38:30,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252472822] [2023-11-29 06:38:30,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:38:30,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:38:30,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:38:30,674 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 06:38:30,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:38:30,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252472822] [2023-11-29 06:38:30,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252472822] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:38:30,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:38:30,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 06:38:30,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120482308] [2023-11-29 06:38:30,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:38:30,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 06:38:30,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:38:30,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 06:38:30,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:38:30,676 INFO L87 Difference]: Start difference. First operand 106600 states and 155083 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 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) [2023-11-29 06:38:37,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:38:37,830 INFO L93 Difference]: Finished difference Result 202232 states and 294995 transitions. [2023-11-29 06:38:37,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 06:38:37,830 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 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 100 [2023-11-29 06:38:37,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:38:38,008 INFO L225 Difference]: With dead ends: 202232 [2023-11-29 06:38:38,008 INFO L226 Difference]: Without dead ends: 187958 [2023-11-29 06:38:38,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-11-29 06:38:38,043 INFO L413 NwaCegarLoop]: 1652 mSDtfsCounter, 9793 mSDsluCounter, 3043 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9793 SdHoareTripleChecker+Valid, 4695 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:38:38,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9793 Valid, 4695 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 06:38:38,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187958 states. [2023-11-29 06:38:43,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187958 to 120872. [2023-11-29 06:38:43,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120872 states, 120870 states have (on average 1.4540828989823777) internal successors, (175755), 120871 states have internal predecessors, (175755), 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) [2023-11-29 06:38:43,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120872 states to 120872 states and 175755 transitions. [2023-11-29 06:38:43,307 INFO L78 Accepts]: Start accepts. Automaton has 120872 states and 175755 transitions. Word has length 100 [2023-11-29 06:38:43,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:38:43,307 INFO L495 AbstractCegarLoop]: Abstraction has 120872 states and 175755 transitions. [2023-11-29 06:38:43,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 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) [2023-11-29 06:38:43,307 INFO L276 IsEmpty]: Start isEmpty. Operand 120872 states and 175755 transitions. [2023-11-29 06:38:43,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 06:38:43,312 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:38:43,312 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:38:43,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 06:38:43,312 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:38:43,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:38:43,313 INFO L85 PathProgramCache]: Analyzing trace with hash -338323220, now seen corresponding path program 1 times [2023-11-29 06:38:43,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:38:43,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573902221] [2023-11-29 06:38:43,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:38:43,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:38:43,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:38:43,369 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-29 06:38:43,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:38:43,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573902221] [2023-11-29 06:38:43,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573902221] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:38:43,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:38:43,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:38:43,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414196302] [2023-11-29 06:38:43,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:38:43,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:38:43,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:38:43,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:38:43,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:38:43,370 INFO L87 Difference]: Start difference. First operand 120872 states and 175755 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:38:51,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:38:51,092 INFO L93 Difference]: Finished difference Result 127633 states and 187061 transitions. [2023-11-29 06:38:51,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:38:51,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-11-29 06:38:51,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:38:51,216 INFO L225 Difference]: With dead ends: 127633 [2023-11-29 06:38:51,216 INFO L226 Difference]: Without dead ends: 123876 [2023-11-29 06:38:51,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:38:51,235 INFO L413 NwaCegarLoop]: 652 mSDtfsCounter, 866 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2292 mSolverCounterSat, 643 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 866 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 2935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 643 IncrementalHoareTripleChecker+Valid, 2292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-29 06:38:51,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [866 Valid, 659 Invalid, 2935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [643 Valid, 2292 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-29 06:38:51,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123876 states. [2023-11-29 06:38:56,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123876 to 123876. [2023-11-29 06:38:56,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123876 states, 123874 states have (on average 1.4492710334694932) internal successors, (179527), 123875 states have internal predecessors, (179527), 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) [2023-11-29 06:38:56,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123876 states to 123876 states and 179527 transitions. [2023-11-29 06:38:56,326 INFO L78 Accepts]: Start accepts. Automaton has 123876 states and 179527 transitions. Word has length 100 [2023-11-29 06:38:56,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:38:56,326 INFO L495 AbstractCegarLoop]: Abstraction has 123876 states and 179527 transitions. [2023-11-29 06:38:56,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:38:56,326 INFO L276 IsEmpty]: Start isEmpty. Operand 123876 states and 179527 transitions. [2023-11-29 06:38:56,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-29 06:38:56,331 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:38:56,332 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:38:56,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 06:38:56,332 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:38:56,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:38:56,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1523502188, now seen corresponding path program 1 times [2023-11-29 06:38:56,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:38:56,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517733110] [2023-11-29 06:38:56,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:38:56,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:38:56,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:38:56,436 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:38:56,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:38:56,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517733110] [2023-11-29 06:38:56,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517733110] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:38:56,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:38:56,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:38:56,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723992866] [2023-11-29 06:38:56,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:38:56,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:38:56,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:38:56,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:38:56,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:38:56,439 INFO L87 Difference]: Start difference. First operand 123876 states and 179527 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2023-11-29 06:39:01,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:39:01,080 INFO L93 Difference]: Finished difference Result 240936 states and 349193 transitions. [2023-11-29 06:39:01,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:39:01,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 101 [2023-11-29 06:39:01,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:39:01,200 INFO L225 Difference]: With dead ends: 240936 [2023-11-29 06:39:01,200 INFO L226 Difference]: Without dead ends: 123878 [2023-11-29 06:39:01,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:39:01,242 INFO L413 NwaCegarLoop]: 1626 mSDtfsCounter, 61 mSDsluCounter, 1565 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 3191 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:39:01,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 3191 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:39:01,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123878 states. [2023-11-29 06:39:06,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123878 to 123876. [2023-11-29 06:39:06,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123876 states, 123874 states have (on average 1.4366130099940262) internal successors, (177959), 123875 states have internal predecessors, (177959), 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) [2023-11-29 06:39:06,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123876 states to 123876 states and 177959 transitions. [2023-11-29 06:39:06,230 INFO L78 Accepts]: Start accepts. Automaton has 123876 states and 177959 transitions. Word has length 101 [2023-11-29 06:39:06,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:39:06,230 INFO L495 AbstractCegarLoop]: Abstraction has 123876 states and 177959 transitions. [2023-11-29 06:39:06,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2023-11-29 06:39:06,230 INFO L276 IsEmpty]: Start isEmpty. Operand 123876 states and 177959 transitions. [2023-11-29 06:39:06,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-29 06:39:06,377 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:39:06,377 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:39:06,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-29 06:39:06,377 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:39:06,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:06,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1117544938, now seen corresponding path program 1 times [2023-11-29 06:39:06,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:06,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835316811] [2023-11-29 06:39:06,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:06,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:06,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:06,480 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:06,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:06,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835316811] [2023-11-29 06:39:06,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835316811] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:39:06,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:39:06,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:39:06,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597479971] [2023-11-29 06:39:06,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:39:06,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:39:06,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:06,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:39:06,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:39:06,482 INFO L87 Difference]: Start difference. First operand 123876 states and 177959 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2023-11-29 06:39:08,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:39:08,292 INFO L93 Difference]: Finished difference Result 166334 states and 239456 transitions. [2023-11-29 06:39:08,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:39:08,293 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 102 [2023-11-29 06:39:08,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:39:08,331 INFO L225 Difference]: With dead ends: 166334 [2023-11-29 06:39:08,331 INFO L226 Difference]: Without dead ends: 49276 [2023-11-29 06:39:08,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:39:08,354 INFO L413 NwaCegarLoop]: 1624 mSDtfsCounter, 55 mSDsluCounter, 1564 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 3188 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:39:08,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 3188 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:39:08,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49276 states. [2023-11-29 06:39:10,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49276 to 49269. [2023-11-29 06:39:10,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49269 states, 49267 states have (on average 1.4372297887023768) internal successors, (70808), 49268 states have internal predecessors, (70808), 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) [2023-11-29 06:39:10,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49269 states to 49269 states and 70808 transitions. [2023-11-29 06:39:10,176 INFO L78 Accepts]: Start accepts. Automaton has 49269 states and 70808 transitions. Word has length 102 [2023-11-29 06:39:10,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:39:10,176 INFO L495 AbstractCegarLoop]: Abstraction has 49269 states and 70808 transitions. [2023-11-29 06:39:10,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2023-11-29 06:39:10,177 INFO L276 IsEmpty]: Start isEmpty. Operand 49269 states and 70808 transitions. [2023-11-29 06:39:10,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-29 06:39:10,179 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:39:10,179 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:39:10,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-29 06:39:10,179 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:39:10,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:10,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1998084642, now seen corresponding path program 1 times [2023-11-29 06:39:10,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:10,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9508084] [2023-11-29 06:39:10,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:10,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:10,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:10,283 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:10,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:10,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9508084] [2023-11-29 06:39:10,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9508084] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:39:10,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:39:10,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:39:10,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025801931] [2023-11-29 06:39:10,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:39:10,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:39:10,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:10,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:39:10,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:39:10,286 INFO L87 Difference]: Start difference. First operand 49269 states and 70808 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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) [2023-11-29 06:39:11,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:39:11,151 INFO L93 Difference]: Finished difference Result 70489 states and 101274 transitions. [2023-11-29 06:39:11,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:39:11,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 103 [2023-11-29 06:39:11,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:39:11,179 INFO L225 Difference]: With dead ends: 70489 [2023-11-29 06:39:11,179 INFO L226 Difference]: Without dead ends: 28055 [2023-11-29 06:39:11,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:39:11,197 INFO L413 NwaCegarLoop]: 1618 mSDtfsCounter, 57 mSDsluCounter, 1549 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 3167 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:39:11,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 3167 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:39:11,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28055 states. [2023-11-29 06:39:12,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28055 to 28053. [2023-11-29 06:39:12,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28053 states, 28051 states have (on average 1.4285408719831736) internal successors, (40072), 28052 states have internal predecessors, (40072), 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) [2023-11-29 06:39:12,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28053 states to 28053 states and 40072 transitions. [2023-11-29 06:39:12,499 INFO L78 Accepts]: Start accepts. Automaton has 28053 states and 40072 transitions. Word has length 103 [2023-11-29 06:39:12,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:39:12,499 INFO L495 AbstractCegarLoop]: Abstraction has 28053 states and 40072 transitions. [2023-11-29 06:39:12,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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) [2023-11-29 06:39:12,499 INFO L276 IsEmpty]: Start isEmpty. Operand 28053 states and 40072 transitions. [2023-11-29 06:39:12,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-29 06:39:12,501 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:39:12,502 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:39:12,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-29 06:39:12,502 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:39:12,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:12,502 INFO L85 PathProgramCache]: Analyzing trace with hash 537082416, now seen corresponding path program 1 times [2023-11-29 06:39:12,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:12,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643513945] [2023-11-29 06:39:12,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:12,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:12,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:12,594 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:12,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:12,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643513945] [2023-11-29 06:39:12,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643513945] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:39:12,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:39:12,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:39:12,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625356302] [2023-11-29 06:39:12,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:39:12,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:39:12,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:12,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:39:12,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:39:12,596 INFO L87 Difference]: Start difference. First operand 28053 states and 40072 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2023-11-29 06:39:13,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:39:13,049 INFO L93 Difference]: Finished difference Result 38665 states and 55170 transitions. [2023-11-29 06:39:13,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:39:13,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 105 [2023-11-29 06:39:13,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:39:13,065 INFO L225 Difference]: With dead ends: 38665 [2023-11-29 06:39:13,065 INFO L226 Difference]: Without dead ends: 17447 [2023-11-29 06:39:13,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:39:13,075 INFO L413 NwaCegarLoop]: 1611 mSDtfsCounter, 54 mSDsluCounter, 1541 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 3152 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:39:13,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 3152 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:39:13,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17447 states. [2023-11-29 06:39:13,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17447 to 17445. [2023-11-29 06:39:13,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17445 states, 17443 states have (on average 1.4240669609585508) internal successors, (24840), 17444 states have internal predecessors, (24840), 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) [2023-11-29 06:39:13,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17445 states to 17445 states and 24840 transitions. [2023-11-29 06:39:13,792 INFO L78 Accepts]: Start accepts. Automaton has 17445 states and 24840 transitions. Word has length 105 [2023-11-29 06:39:13,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:39:13,792 INFO L495 AbstractCegarLoop]: Abstraction has 17445 states and 24840 transitions. [2023-11-29 06:39:13,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2023-11-29 06:39:13,793 INFO L276 IsEmpty]: Start isEmpty. Operand 17445 states and 24840 transitions. [2023-11-29 06:39:13,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-29 06:39:13,794 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:39:13,794 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:39:13,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-29 06:39:13,795 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:39:13,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:13,795 INFO L85 PathProgramCache]: Analyzing trace with hash 980333502, now seen corresponding path program 1 times [2023-11-29 06:39:13,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:13,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117272303] [2023-11-29 06:39:13,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:13,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:13,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:13,908 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:13,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:13,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117272303] [2023-11-29 06:39:13,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117272303] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:39:13,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:39:13,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:39:13,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934905041] [2023-11-29 06:39:13,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:39:13,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:39:13,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:13,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:39:13,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:39:13,911 INFO L87 Difference]: Start difference. First operand 17445 states and 24840 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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) [2023-11-29 06:39:14,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:39:14,180 INFO L93 Difference]: Finished difference Result 22753 states and 32322 transitions. [2023-11-29 06:39:14,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:39:14,180 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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 107 [2023-11-29 06:39:14,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:39:14,191 INFO L225 Difference]: With dead ends: 22753 [2023-11-29 06:39:14,191 INFO L226 Difference]: Without dead ends: 12143 [2023-11-29 06:39:14,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:39:14,197 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 51 mSDsluCounter, 1533 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 3137 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:39:14,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 3137 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:39:14,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12143 states. [2023-11-29 06:39:14,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12143 to 12141. [2023-11-29 06:39:14,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12141 states, 12139 states have (on average 1.4244995469149024) internal successors, (17292), 12140 states have internal predecessors, (17292), 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) [2023-11-29 06:39:14,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12141 states to 12141 states and 17292 transitions. [2023-11-29 06:39:14,480 INFO L78 Accepts]: Start accepts. Automaton has 12141 states and 17292 transitions. Word has length 107 [2023-11-29 06:39:14,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:39:14,481 INFO L495 AbstractCegarLoop]: Abstraction has 12141 states and 17292 transitions. [2023-11-29 06:39:14,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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) [2023-11-29 06:39:14,481 INFO L276 IsEmpty]: Start isEmpty. Operand 12141 states and 17292 transitions. [2023-11-29 06:39:14,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-29 06:39:14,483 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:39:14,483 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:39:14,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-29 06:39:14,483 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:39:14,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:14,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1787844916, now seen corresponding path program 1 times [2023-11-29 06:39:14,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:14,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942375991] [2023-11-29 06:39:14,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:14,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:14,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:14,587 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:14,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:14,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942375991] [2023-11-29 06:39:14,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942375991] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:39:14,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:39:14,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:39:14,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776591252] [2023-11-29 06:39:14,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:39:14,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:39:14,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:14,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:39:14,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:39:14,590 INFO L87 Difference]: Start difference. First operand 12141 states and 17292 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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) [2023-11-29 06:39:14,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:39:14,792 INFO L93 Difference]: Finished difference Result 14797 states and 21000 transitions. [2023-11-29 06:39:14,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:39:14,792 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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 109 [2023-11-29 06:39:14,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:39:14,802 INFO L225 Difference]: With dead ends: 14797 [2023-11-29 06:39:14,802 INFO L226 Difference]: Without dead ends: 9491 [2023-11-29 06:39:14,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:39:14,807 INFO L413 NwaCegarLoop]: 1597 mSDtfsCounter, 48 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 3122 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:39:14,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 3122 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:39:14,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9491 states. [2023-11-29 06:39:14,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9491 to 9489. [2023-11-29 06:39:14,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9489 states, 9487 states have (on average 1.428481079371772) internal successors, (13552), 9488 states have internal predecessors, (13552), 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) [2023-11-29 06:39:14,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9489 states to 9489 states and 13552 transitions. [2023-11-29 06:39:14,984 INFO L78 Accepts]: Start accepts. Automaton has 9489 states and 13552 transitions. Word has length 109 [2023-11-29 06:39:14,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:39:14,984 INFO L495 AbstractCegarLoop]: Abstraction has 9489 states and 13552 transitions. [2023-11-29 06:39:14,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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) [2023-11-29 06:39:14,984 INFO L276 IsEmpty]: Start isEmpty. Operand 9489 states and 13552 transitions. [2023-11-29 06:39:14,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-29 06:39:14,985 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:39:14,985 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:39:14,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-29 06:39:14,985 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:39:14,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:14,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1119023962, now seen corresponding path program 1 times [2023-11-29 06:39:14,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:14,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259626606] [2023-11-29 06:39:14,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:14,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:15,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:15,081 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:15,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:15,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259626606] [2023-11-29 06:39:15,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259626606] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:39:15,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:39:15,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:39:15,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960414349] [2023-11-29 06:39:15,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:39:15,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:39:15,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:15,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:39:15,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:39:15,083 INFO L87 Difference]: Start difference. First operand 9489 states and 13552 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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) [2023-11-29 06:39:15,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:39:15,205 INFO L93 Difference]: Finished difference Result 10819 states and 15390 transitions. [2023-11-29 06:39:15,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:39:15,206 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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 111 [2023-11-29 06:39:15,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:39:15,211 INFO L225 Difference]: With dead ends: 10819 [2023-11-29 06:39:15,211 INFO L226 Difference]: Without dead ends: 8165 [2023-11-29 06:39:15,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:39:15,214 INFO L413 NwaCegarLoop]: 1590 mSDtfsCounter, 45 mSDsluCounter, 1517 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3107 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:39:15,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3107 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:39:15,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8165 states. [2023-11-29 06:39:15,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8165 to 8163. [2023-11-29 06:39:15,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8163 states, 8161 states have (on average 1.433525303271658) internal successors, (11699), 8162 states have internal predecessors, (11699), 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) [2023-11-29 06:39:15,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8163 states to 8163 states and 11699 transitions. [2023-11-29 06:39:15,351 INFO L78 Accepts]: Start accepts. Automaton has 8163 states and 11699 transitions. Word has length 111 [2023-11-29 06:39:15,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:39:15,351 INFO L495 AbstractCegarLoop]: Abstraction has 8163 states and 11699 transitions. [2023-11-29 06:39:15,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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) [2023-11-29 06:39:15,351 INFO L276 IsEmpty]: Start isEmpty. Operand 8163 states and 11699 transitions. [2023-11-29 06:39:15,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-29 06:39:15,352 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:39:15,352 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:39:15,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-29 06:39:15,352 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:39:15,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:15,353 INFO L85 PathProgramCache]: Analyzing trace with hash 612202856, now seen corresponding path program 1 times [2023-11-29 06:39:15,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:15,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362140572] [2023-11-29 06:39:15,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:15,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:15,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:15,483 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 06:39:15,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:15,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362140572] [2023-11-29 06:39:15,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362140572] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:39:15,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431127439] [2023-11-29 06:39:15,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:15,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:39:15,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951be83c-0678-4de8-a540-01c440143f80/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:39:15,487 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951be83c-0678-4de8-a540-01c440143f80/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:39:15,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951be83c-0678-4de8-a540-01c440143f80/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 06:39:15,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:15,649 INFO L262 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 06:39:15,657 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:39:15,843 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 06:39:15,843 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:39:16,310 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 06:39:16,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431127439] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:39:16,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:39:16,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 8 [2023-11-29 06:39:16,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508970731] [2023-11-29 06:39:16,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:39:16,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 06:39:16,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:16,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 06:39:16,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:39:16,312 INFO L87 Difference]: Start difference. First operand 8163 states and 11699 transitions. Second operand has 8 states, 8 states have (on average 36.625) internal successors, (293), 8 states have internal predecessors, (293), 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) [2023-11-29 06:39:16,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:39:16,683 INFO L93 Difference]: Finished difference Result 11370 states and 16000 transitions. [2023-11-29 06:39:16,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:39:16,684 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 36.625) internal successors, (293), 8 states have internal predecessors, (293), 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 113 [2023-11-29 06:39:16,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:39:16,694 INFO L225 Difference]: With dead ends: 11370 [2023-11-29 06:39:16,695 INFO L226 Difference]: Without dead ends: 10042 [2023-11-29 06:39:16,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=38, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:39:16,699 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 1603 mSDsluCounter, 1903 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1603 SdHoareTripleChecker+Valid, 3476 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:39:16,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1603 Valid, 3476 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:39:16,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10042 states. [2023-11-29 06:39:16,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10042 to 9955. [2023-11-29 06:39:16,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9955 states, 9953 states have (on average 1.4057068220636995) internal successors, (13991), 9954 states have internal predecessors, (13991), 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) [2023-11-29 06:39:16,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9955 states to 9955 states and 13991 transitions. [2023-11-29 06:39:16,929 INFO L78 Accepts]: Start accepts. Automaton has 9955 states and 13991 transitions. Word has length 113 [2023-11-29 06:39:16,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:39:16,929 INFO L495 AbstractCegarLoop]: Abstraction has 9955 states and 13991 transitions. [2023-11-29 06:39:16,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 36.625) internal successors, (293), 8 states have internal predecessors, (293), 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) [2023-11-29 06:39:16,929 INFO L276 IsEmpty]: Start isEmpty. Operand 9955 states and 13991 transitions. [2023-11-29 06:39:16,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-29 06:39:16,930 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:39:16,930 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:39:16,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951be83c-0678-4de8-a540-01c440143f80/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 06:39:17,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951be83c-0678-4de8-a540-01c440143f80/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:39:17,131 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:39:17,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:17,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1129829782, now seen corresponding path program 1 times [2023-11-29 06:39:17,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:17,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907518370] [2023-11-29 06:39:17,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:17,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:17,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:18,463 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:18,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:18,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907518370] [2023-11-29 06:39:18,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907518370] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:39:18,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778504158] [2023-11-29 06:39:18,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:18,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:39:18,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951be83c-0678-4de8-a540-01c440143f80/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:39:18,465 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951be83c-0678-4de8-a540-01c440143f80/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:39:18,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951be83c-0678-4de8-a540-01c440143f80/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 06:39:18,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:18,607 INFO L262 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 06:39:18,612 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:39:19,139 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:19,139 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:39:20,788 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:20,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778504158] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:39:20,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:39:20,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2023-11-29 06:39:20,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459513748] [2023-11-29 06:39:20,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:39:20,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 06:39:20,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:20,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 06:39:20,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=653, Unknown=0, NotChecked=0, Total=756 [2023-11-29 06:39:20,790 INFO L87 Difference]: Start difference. First operand 9955 states and 13991 transitions. Second operand has 28 states, 28 states have (on average 10.535714285714286) internal successors, (295), 27 states have internal predecessors, (295), 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) [2023-11-29 06:39:23,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:39:23,652 INFO L93 Difference]: Finished difference Result 23272 states and 31467 transitions. [2023-11-29 06:39:23,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-29 06:39:23,653 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 10.535714285714286) internal successors, (295), 27 states have internal predecessors, (295), 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 114 [2023-11-29 06:39:23,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:39:23,671 INFO L225 Difference]: With dead ends: 23272 [2023-11-29 06:39:23,671 INFO L226 Difference]: Without dead ends: 20267 [2023-11-29 06:39:23,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 817 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=665, Invalid=2757, Unknown=0, NotChecked=0, Total=3422 [2023-11-29 06:39:23,679 INFO L413 NwaCegarLoop]: 1539 mSDtfsCounter, 21248 mSDsluCounter, 8313 mSDsCounter, 0 mSdLazyCounter, 1249 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21248 SdHoareTripleChecker+Valid, 9852 SdHoareTripleChecker+Invalid, 1284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 06:39:23,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21248 Valid, 9852 Invalid, 1284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1249 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 06:39:23,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20267 states. [2023-11-29 06:39:24,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20267 to 19311. [2023-11-29 06:39:24,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19311 states, 19309 states have (on average 1.35817494432648) internal successors, (26225), 19310 states have internal predecessors, (26225), 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) [2023-11-29 06:39:24,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19311 states to 19311 states and 26225 transitions. [2023-11-29 06:39:24,594 INFO L78 Accepts]: Start accepts. Automaton has 19311 states and 26225 transitions. Word has length 114 [2023-11-29 06:39:24,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:39:24,594 INFO L495 AbstractCegarLoop]: Abstraction has 19311 states and 26225 transitions. [2023-11-29 06:39:24,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 10.535714285714286) internal successors, (295), 27 states have internal predecessors, (295), 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) [2023-11-29 06:39:24,594 INFO L276 IsEmpty]: Start isEmpty. Operand 19311 states and 26225 transitions. [2023-11-29 06:39:24,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-29 06:39:24,596 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:39:24,596 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:39:24,601 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951be83c-0678-4de8-a540-01c440143f80/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 06:39:24,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951be83c-0678-4de8-a540-01c440143f80/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-11-29 06:39:24,797 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:39:24,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:24,797 INFO L85 PathProgramCache]: Analyzing trace with hash 2139404516, now seen corresponding path program 1 times [2023-11-29 06:39:24,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:24,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783286126] [2023-11-29 06:39:24,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:24,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:24,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:27,113 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:27,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:27,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783286126] [2023-11-29 06:39:27,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783286126] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:39:27,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826212375] [2023-11-29 06:39:27,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:27,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:39:27,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951be83c-0678-4de8-a540-01c440143f80/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:39:27,115 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951be83c-0678-4de8-a540-01c440143f80/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:39:27,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951be83c-0678-4de8-a540-01c440143f80/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 06:39:27,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:27,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 06:39:27,236 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:39:27,711 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:27,711 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:39:28,578 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:28,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826212375] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:39:28,578 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:39:28,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2023-11-29 06:39:28,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200915758] [2023-11-29 06:39:28,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:39:28,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 06:39:28,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:28,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 06:39:28,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=665, Unknown=0, NotChecked=0, Total=756 [2023-11-29 06:39:28,580 INFO L87 Difference]: Start difference. First operand 19311 states and 26225 transitions. Second operand has 28 states, 28 states have (on average 10.607142857142858) internal successors, (297), 27 states have internal predecessors, (297), 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) [2023-11-29 06:39:34,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:39:34,308 INFO L93 Difference]: Finished difference Result 59957 states and 79314 transitions. [2023-11-29 06:39:34,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-11-29 06:39:34,309 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 10.607142857142858) internal successors, (297), 27 states have internal predecessors, (297), 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 114 [2023-11-29 06:39:34,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:39:34,337 INFO L225 Difference]: With dead ends: 59957 [2023-11-29 06:39:34,338 INFO L226 Difference]: Without dead ends: 47531 [2023-11-29 06:39:34,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 739 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=739, Invalid=3043, Unknown=0, NotChecked=0, Total=3782 [2023-11-29 06:39:34,347 INFO L413 NwaCegarLoop]: 1529 mSDtfsCounter, 24128 mSDsluCounter, 5327 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24128 SdHoareTripleChecker+Valid, 6856 SdHoareTripleChecker+Invalid, 1222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 06:39:34,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24128 Valid, 6856 Invalid, 1222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1170 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 06:39:34,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47531 states. [2023-11-29 06:39:35,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47531 to 45100. [2023-11-29 06:39:36,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45100 states, 45098 states have (on average 1.3195041908732095) internal successors, (59507), 45099 states have internal predecessors, (59507), 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) [2023-11-29 06:39:36,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45100 states to 45100 states and 59507 transitions. [2023-11-29 06:39:36,070 INFO L78 Accepts]: Start accepts. Automaton has 45100 states and 59507 transitions. Word has length 114 [2023-11-29 06:39:36,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:39:36,070 INFO L495 AbstractCegarLoop]: Abstraction has 45100 states and 59507 transitions. [2023-11-29 06:39:36,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 10.607142857142858) internal successors, (297), 27 states have internal predecessors, (297), 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) [2023-11-29 06:39:36,070 INFO L276 IsEmpty]: Start isEmpty. Operand 45100 states and 59507 transitions. [2023-11-29 06:39:36,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 06:39:36,072 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:39:36,072 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:39:36,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951be83c-0678-4de8-a540-01c440143f80/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 06:39:36,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951be83c-0678-4de8-a540-01c440143f80/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-11-29 06:39:36,273 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:39:36,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:36,273 INFO L85 PathProgramCache]: Analyzing trace with hash 453438694, now seen corresponding path program 1 times [2023-11-29 06:39:36,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:36,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79472248] [2023-11-29 06:39:36,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:36,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:36,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:37,170 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:37,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:37,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79472248] [2023-11-29 06:39:37,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79472248] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:39:37,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951663557] [2023-11-29 06:39:37,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:37,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:39:37,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951be83c-0678-4de8-a540-01c440143f80/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:39:37,171 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951be83c-0678-4de8-a540-01c440143f80/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:39:37,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951be83c-0678-4de8-a540-01c440143f80/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 06:39:37,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:37,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 06:39:37,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:39:37,749 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:37,749 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:39:38,612 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:38,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951663557] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:39:38,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:39:38,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2023-11-29 06:39:38,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421614450] [2023-11-29 06:39:38,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:39:38,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 06:39:38,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:38,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 06:39:38,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=666, Unknown=0, NotChecked=0, Total=756 [2023-11-29 06:39:38,614 INFO L87 Difference]: Start difference. First operand 45100 states and 59507 transitions. Second operand has 28 states, 28 states have (on average 10.857142857142858) internal successors, (304), 27 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:44,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:39:44,111 INFO L93 Difference]: Finished difference Result 129020 states and 168569 transitions. [2023-11-29 06:39:44,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-29 06:39:44,112 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 10.857142857142858) internal successors, (304), 27 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-11-29 06:39:44,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:39:44,187 INFO L225 Difference]: With dead ends: 129020 [2023-11-29 06:39:44,187 INFO L226 Difference]: Without dead ends: 94591 [2023-11-29 06:39:44,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=684, Invalid=2976, Unknown=0, NotChecked=0, Total=3660 [2023-11-29 06:39:44,216 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 19656 mSDsluCounter, 10006 mSDsCounter, 0 mSdLazyCounter, 1727 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19656 SdHoareTripleChecker+Valid, 11579 SdHoareTripleChecker+Invalid, 1765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:39:44,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19656 Valid, 11579 Invalid, 1765 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [38 Valid, 1727 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 06:39:44,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94591 states. [2023-11-29 06:39:48,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94591 to 80933. [2023-11-29 06:39:48,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80933 states, 80931 states have (on average 1.3063226699287047) internal successors, (105722), 80932 states have internal predecessors, (105722), 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) [2023-11-29 06:39:48,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80933 states to 80933 states and 105722 transitions. [2023-11-29 06:39:48,211 INFO L78 Accepts]: Start accepts. Automaton has 80933 states and 105722 transitions. Word has length 115 [2023-11-29 06:39:48,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:39:48,212 INFO L495 AbstractCegarLoop]: Abstraction has 80933 states and 105722 transitions. [2023-11-29 06:39:48,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 10.857142857142858) internal successors, (304), 27 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:48,212 INFO L276 IsEmpty]: Start isEmpty. Operand 80933 states and 105722 transitions. [2023-11-29 06:39:48,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 06:39:48,215 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:39:48,215 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:39:48,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951be83c-0678-4de8-a540-01c440143f80/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-29 06:39:48,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951be83c-0678-4de8-a540-01c440143f80/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-11-29 06:39:48,415 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:39:48,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:48,416 INFO L85 PathProgramCache]: Analyzing trace with hash -82144538, now seen corresponding path program 1 times [2023-11-29 06:39:48,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:48,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687253810] [2023-11-29 06:39:48,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:48,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:48,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:48,696 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:48,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:48,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687253810] [2023-11-29 06:39:48,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687253810] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:39:48,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570006581] [2023-11-29 06:39:48,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:48,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:39:48,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951be83c-0678-4de8-a540-01c440143f80/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:39:48,697 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951be83c-0678-4de8-a540-01c440143f80/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:39:48,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951be83c-0678-4de8-a540-01c440143f80/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 06:39:48,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:48,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 06:39:48,831 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:39:49,583 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:49,583 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:39:50,881 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:50,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570006581] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:39:50,882 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:39:50,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 31 [2023-11-29 06:39:50,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883451195] [2023-11-29 06:39:50,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:39:50,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-29 06:39:50,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:50,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-29 06:39:50,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=784, Unknown=0, NotChecked=0, Total=930 [2023-11-29 06:39:50,884 INFO L87 Difference]: Start difference. First operand 80933 states and 105722 transitions. Second operand has 31 states, 31 states have (on average 10.225806451612904) internal successors, (317), 31 states have internal predecessors, (317), 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) [2023-11-29 06:39:59,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:39:59,967 INFO L93 Difference]: Finished difference Result 223327 states and 288388 transitions. [2023-11-29 06:39:59,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-11-29 06:39:59,968 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 10.225806451612904) internal successors, (317), 31 states have internal predecessors, (317), 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 115 [2023-11-29 06:39:59,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:40:00,117 INFO L225 Difference]: With dead ends: 223327 [2023-11-29 06:40:00,117 INFO L226 Difference]: Without dead ends: 149483 [2023-11-29 06:40:00,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1433 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1213, Invalid=4793, Unknown=0, NotChecked=0, Total=6006 [2023-11-29 06:40:00,152 INFO L413 NwaCegarLoop]: 1553 mSDtfsCounter, 16047 mSDsluCounter, 8423 mSDsCounter, 0 mSdLazyCounter, 1390 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16047 SdHoareTripleChecker+Valid, 9976 SdHoareTripleChecker+Invalid, 1430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 06:40:00,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16047 Valid, 9976 Invalid, 1430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1390 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 06:40:00,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149483 states. [2023-11-29 06:40:06,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149483 to 122081. [2023-11-29 06:40:06,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122081 states, 122079 states have (on average 1.277181169570524) internal successors, (155917), 122080 states have internal predecessors, (155917), 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) [2023-11-29 06:40:06,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122081 states to 122081 states and 155917 transitions. [2023-11-29 06:40:06,914 INFO L78 Accepts]: Start accepts. Automaton has 122081 states and 155917 transitions. Word has length 115 [2023-11-29 06:40:06,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:40:06,914 INFO L495 AbstractCegarLoop]: Abstraction has 122081 states and 155917 transitions. [2023-11-29 06:40:06,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 10.225806451612904) internal successors, (317), 31 states have internal predecessors, (317), 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) [2023-11-29 06:40:06,914 INFO L276 IsEmpty]: Start isEmpty. Operand 122081 states and 155917 transitions. [2023-11-29 06:40:06,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-29 06:40:06,918 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:40:06,918 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:40:06,922 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951be83c-0678-4de8-a540-01c440143f80/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 06:40:07,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951be83c-0678-4de8-a540-01c440143f80/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-11-29 06:40:07,118 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:40:07,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:40:07,119 INFO L85 PathProgramCache]: Analyzing trace with hash 410486070, now seen corresponding path program 1 times [2023-11-29 06:40:07,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:40:07,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023840115] [2023-11-29 06:40:07,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:40:07,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:40:07,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:40:07,542 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:07,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:40:07,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023840115] [2023-11-29 06:40:07,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023840115] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:40:07,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628252221] [2023-11-29 06:40:07,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:40:07,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:40:07,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951be83c-0678-4de8-a540-01c440143f80/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:40:07,544 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951be83c-0678-4de8-a540-01c440143f80/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:40:07,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951be83c-0678-4de8-a540-01c440143f80/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 06:40:07,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:40:07,669 INFO L262 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 06:40:07,672 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:40:08,477 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:08,477 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:40:10,063 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:10,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628252221] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:40:10,063 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:40:10,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 31 [2023-11-29 06:40:10,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737887621] [2023-11-29 06:40:10,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:40:10,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-29 06:40:10,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:40:10,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-29 06:40:10,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=796, Unknown=0, NotChecked=0, Total=930 [2023-11-29 06:40:10,066 INFO L87 Difference]: Start difference. First operand 122081 states and 155917 transitions. Second operand has 31 states, 31 states have (on average 10.612903225806452) internal successors, (329), 31 states have internal predecessors, (329), 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) [2023-11-29 06:40:35,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:40:35,219 INFO L93 Difference]: Finished difference Result 599693 states and 758043 transitions. [2023-11-29 06:40:35,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-11-29 06:40:35,219 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 10.612903225806452) internal successors, (329), 31 states have internal predecessors, (329), 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 117 [2023-11-29 06:40:35,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:40:35,899 INFO L225 Difference]: With dead ends: 599693 [2023-11-29 06:40:35,899 INFO L226 Difference]: Without dead ends: 493957 [2023-11-29 06:40:35,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1319 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1062, Invalid=4488, Unknown=0, NotChecked=0, Total=5550 [2023-11-29 06:40:35,965 INFO L413 NwaCegarLoop]: 1553 mSDtfsCounter, 22117 mSDsluCounter, 8695 mSDsCounter, 0 mSdLazyCounter, 1742 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22117 SdHoareTripleChecker+Valid, 10248 SdHoareTripleChecker+Invalid, 1782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:40:35,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22117 Valid, 10248 Invalid, 1782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1742 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 06:40:36,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493957 states. [2023-11-29 06:41:01,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493957 to 466381. [2023-11-29 06:41:02,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466381 states, 466379 states have (on average 1.2465698498431532) internal successors, (581374), 466380 states have internal predecessors, (581374), 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) [2023-11-29 06:41:03,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466381 states to 466381 states and 581374 transitions. [2023-11-29 06:41:03,428 INFO L78 Accepts]: Start accepts. Automaton has 466381 states and 581374 transitions. Word has length 117 [2023-11-29 06:41:03,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:41:03,428 INFO L495 AbstractCegarLoop]: Abstraction has 466381 states and 581374 transitions. [2023-11-29 06:41:03,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 10.612903225806452) internal successors, (329), 31 states have internal predecessors, (329), 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) [2023-11-29 06:41:03,429 INFO L276 IsEmpty]: Start isEmpty. Operand 466381 states and 581374 transitions. [2023-11-29 06:41:03,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-29 06:41:03,437 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:41:03,437 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:41:03,443 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951be83c-0678-4de8-a540-01c440143f80/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 06:41:03,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951be83c-0678-4de8-a540-01c440143f80/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-11-29 06:41:03,638 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:41:03,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:41:03,638 INFO L85 PathProgramCache]: Analyzing trace with hash 910474630, now seen corresponding path program 1 times [2023-11-29 06:41:03,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:41:03,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751481039] [2023-11-29 06:41:03,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:41:03,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:41:03,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:41:09,905 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:41:09,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:41:09,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751481039] [2023-11-29 06:41:09,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751481039] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:41:09,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628512680] [2023-11-29 06:41:09,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:41:09,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:41:09,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951be83c-0678-4de8-a540-01c440143f80/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:41:09,907 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951be83c-0678-4de8-a540-01c440143f80/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:41:09,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951be83c-0678-4de8-a540-01c440143f80/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 06:41:10,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:41:10,031 INFO L262 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 06:41:10,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:41:11,778 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:41:11,778 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:41:13,279 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:41:13,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628512680] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:41:13,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:41:13,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 12, 12] total 62 [2023-11-29 06:41:13,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733577136] [2023-11-29 06:41:13,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:41:13,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-11-29 06:41:13,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:41:13,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-11-29 06:41:13,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=3550, Unknown=0, NotChecked=0, Total=3782 [2023-11-29 06:41:13,283 INFO L87 Difference]: Start difference. First operand 466381 states and 581374 transitions. Second operand has 62 states, 62 states have (on average 5.451612903225806) internal successors, (338), 62 states have internal predecessors, (338), 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) [2023-11-29 06:45:09,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:45:09,165 INFO L93 Difference]: Finished difference Result 689417 states and 850347 transitions. [2023-11-29 06:45:09,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 624 states. [2023-11-29 06:45:09,166 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 5.451612903225806) internal successors, (338), 62 states have internal predecessors, (338), 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 119 [2023-11-29 06:45:09,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:45:09,919 INFO L225 Difference]: With dead ends: 689417 [2023-11-29 06:45:09,919 INFO L226 Difference]: Without dead ends: 582910 [2023-11-29 06:45:10,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 900 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 682 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212880 ImplicationChecksByTransitivity, 178.6s TimeCoverageRelationStatistics Valid=63045, Invalid=404127, Unknown=0, NotChecked=0, Total=467172 [2023-11-29 06:45:10,048 INFO L413 NwaCegarLoop]: 1904 mSDtfsCounter, 39417 mSDsluCounter, 42094 mSDsCounter, 0 mSdLazyCounter, 23124 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39417 SdHoareTripleChecker+Valid, 43998 SdHoareTripleChecker+Invalid, 23456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 23124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.8s IncrementalHoareTripleChecker+Time [2023-11-29 06:45:10,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39417 Valid, 43998 Invalid, 23456 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [332 Valid, 23124 Invalid, 0 Unknown, 0 Unchecked, 22.8s Time] [2023-11-29 06:45:10,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582910 states. [2023-11-29 06:45:37,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582910 to 440562. [2023-11-29 06:45:38,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440562 states, 440560 states have (on average 1.2444298165970582) internal successors, (548246), 440561 states have internal predecessors, (548246), 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) [2023-11-29 06:45:39,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440562 states to 440562 states and 548246 transitions. [2023-11-29 06:45:39,104 INFO L78 Accepts]: Start accepts. Automaton has 440562 states and 548246 transitions. Word has length 119 [2023-11-29 06:45:39,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:45:39,104 INFO L495 AbstractCegarLoop]: Abstraction has 440562 states and 548246 transitions. [2023-11-29 06:45:39,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 5.451612903225806) internal successors, (338), 62 states have internal predecessors, (338), 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) [2023-11-29 06:45:39,104 INFO L276 IsEmpty]: Start isEmpty. Operand 440562 states and 548246 transitions. [2023-11-29 06:45:39,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-29 06:45:39,112 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:45:39,112 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:45:39,117 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951be83c-0678-4de8-a540-01c440143f80/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 06:45:39,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951be83c-0678-4de8-a540-01c440143f80/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-11-29 06:45:39,313 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:45:39,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:45:39,313 INFO L85 PathProgramCache]: Analyzing trace with hash 836987526, now seen corresponding path program 1 times [2023-11-29 06:45:39,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:45:39,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703765986] [2023-11-29 06:45:39,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:45:39,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:45:39,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:45:40,514 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:45:40,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:45:40,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703765986] [2023-11-29 06:45:40,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703765986] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:45:40,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868006964] [2023-11-29 06:45:40,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:45:40,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:45:40,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951be83c-0678-4de8-a540-01c440143f80/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:45:40,516 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951be83c-0678-4de8-a540-01c440143f80/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:45:40,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951be83c-0678-4de8-a540-01c440143f80/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 06:45:40,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:45:40,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 06:45:40,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:45:41,962 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:45:41,962 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:45:43,634 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:45:43,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868006964] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:45:43,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:45:43,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 32 [2023-11-29 06:45:43,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670273241] [2023-11-29 06:45:43,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:45:43,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-29 06:45:43,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:45:43,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-29 06:45:43,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=872, Unknown=0, NotChecked=0, Total=992 [2023-11-29 06:45:43,637 INFO L87 Difference]: Start difference. First operand 440562 states and 548246 transitions. Second operand has 32 states, 32 states have (on average 9.5625) internal successors, (306), 32 states have internal predecessors, (306), 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) [2023-11-29 06:46:48,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:46:48,449 INFO L93 Difference]: Finished difference Result 1175940 states and 1460297 transitions. [2023-11-29 06:46:48,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-29 06:46:48,450 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 9.5625) internal successors, (306), 32 states have internal predecessors, (306), 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 119 [2023-11-29 06:46:48,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:46:49,996 INFO L225 Difference]: With dead ends: 1175940 [2023-11-29 06:46:49,996 INFO L226 Difference]: Without dead ends: 1067854 [2023-11-29 06:46:50,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=812, Invalid=3220, Unknown=0, NotChecked=0, Total=4032 [2023-11-29 06:46:50,203 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 13172 mSDsluCounter, 11484 mSDsCounter, 0 mSdLazyCounter, 1378 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13172 SdHoareTripleChecker+Valid, 13033 SdHoareTripleChecker+Invalid, 1424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:46:50,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13172 Valid, 13033 Invalid, 1424 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [46 Valid, 1378 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 06:46:50,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067854 states. [2023-11-29 06:47:20,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067854 to 418282. [2023-11-29 06:47:20,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418282 states, 418280 states have (on average 1.2413431194415225) internal successors, (519229), 418281 states have internal predecessors, (519229), 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) [2023-11-29 06:47:21,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418282 states to 418282 states and 519229 transitions. [2023-11-29 06:47:21,726 INFO L78 Accepts]: Start accepts. Automaton has 418282 states and 519229 transitions. Word has length 119 [2023-11-29 06:47:21,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:47:21,727 INFO L495 AbstractCegarLoop]: Abstraction has 418282 states and 519229 transitions. [2023-11-29 06:47:21,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 9.5625) internal successors, (306), 32 states have internal predecessors, (306), 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) [2023-11-29 06:47:21,727 INFO L276 IsEmpty]: Start isEmpty. Operand 418282 states and 519229 transitions. [2023-11-29 06:47:21,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-29 06:47:21,734 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:47:21,734 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:47:21,739 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951be83c-0678-4de8-a540-01c440143f80/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 06:47:21,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951be83c-0678-4de8-a540-01c440143f80/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-11-29 06:47:21,935 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:47:21,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:47:21,935 INFO L85 PathProgramCache]: Analyzing trace with hash -551943382, now seen corresponding path program 1 times [2023-11-29 06:47:21,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:47:21,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168660798] [2023-11-29 06:47:21,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:47:21,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:47:21,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:47:27,184 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:47:27,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:47:27,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168660798] [2023-11-29 06:47:27,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168660798] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:47:27,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075033957] [2023-11-29 06:47:27,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:47:27,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:47:27,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951be83c-0678-4de8-a540-01c440143f80/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:47:27,185 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951be83c-0678-4de8-a540-01c440143f80/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:47:27,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951be83c-0678-4de8-a540-01c440143f80/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 06:47:27,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:47:27,308 INFO L262 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 06:47:27,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:47:29,364 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:47:29,364 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:47:31,186 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:47:31,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075033957] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:47:31,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:47:31,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 11, 11] total 59 [2023-11-29 06:47:31,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405898343] [2023-11-29 06:47:31,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:47:31,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-11-29 06:47:31,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:47:31,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-11-29 06:47:31,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=3228, Unknown=0, NotChecked=0, Total=3422 [2023-11-29 06:47:31,188 INFO L87 Difference]: Start difference. First operand 418282 states and 519229 transitions. Second operand has 59 states, 59 states have (on average 5.661016949152542) internal successors, (334), 59 states have internal predecessors, (334), 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)