./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label05.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_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/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_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label05.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/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_05b7c187-3530-46d6-ab0d-e8cc3a52214e/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 46c0d9f9d80db77d4c60fa541a095100d438c0f00ce4cea8ddaeb964f10aa3ad --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 06:39:46,747 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:39:46,810 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 06:39:46,813 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:39:46,814 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:39:46,836 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:39:46,837 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:39:46,837 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:39:46,838 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 06:39:46,839 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 06:39:46,839 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 06:39:46,840 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 06:39:46,840 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:39:46,841 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:39:46,841 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:39:46,842 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:39:46,843 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 06:39:46,843 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 06:39:46,844 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 06:39:46,844 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 06:39:46,845 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:39:46,845 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 06:39:46,846 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 06:39:46,846 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 06:39:46,847 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 06:39:46,847 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 06:39:46,848 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:39:46,848 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:39:46,849 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:39:46,849 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 06:39:46,850 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 06:39:46,850 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:39:46,850 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:39:46,851 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 06:39:46,851 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 06:39:46,851 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 06:39:46,851 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 06:39:46,851 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 06:39:46,851 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 06:39:46,852 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 06:39:46,852 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 06:39:46,852 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 06:39:46,852 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_05b7c187-3530-46d6-ab0d-e8cc3a52214e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46c0d9f9d80db77d4c60fa541a095100d438c0f00ce4cea8ddaeb964f10aa3ad [2023-11-29 06:39:47,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:39:47,079 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:39:47,081 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:39:47,083 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:39:47,083 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:39:47,084 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label05.c [2023-11-29 06:39:49,905 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:39:50,337 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:39:50,338 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label05.c [2023-11-29 06:39:50,376 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/data/f8b14ed2d/0c4eedb57a77456faeb360162a1cba41/FLAGb7d1c0513 [2023-11-29 06:39:50,391 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/data/f8b14ed2d/0c4eedb57a77456faeb360162a1cba41 [2023-11-29 06:39:50,394 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:39:50,396 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:39:50,397 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:39:50,397 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:39:50,403 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:39:50,403 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:39:50" (1/1) ... [2023-11-29 06:39:50,405 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45140908 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:39:50, skipping insertion in model container [2023-11-29 06:39:50,405 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:39:50" (1/1) ... [2023-11-29 06:39:50,539 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:39:50,859 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_05b7c187-3530-46d6-ab0d-e8cc3a52214e/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label05.c[8616,8629] [2023-11-29 06:39:50,927 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_05b7c187-3530-46d6-ab0d-e8cc3a52214e/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label05.c[15552,15565] [2023-11-29 06:39:51,771 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:39:51,783 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 06:39:51,810 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_05b7c187-3530-46d6-ab0d-e8cc3a52214e/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label05.c[8616,8629] [2023-11-29 06:39:51,824 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_05b7c187-3530-46d6-ab0d-e8cc3a52214e/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label05.c[15552,15565] [2023-11-29 06:39:52,356 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:39:52,386 INFO L206 MainTranslator]: Completed translation [2023-11-29 06:39:52,386 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:39:52 WrapperNode [2023-11-29 06:39:52,386 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:39:52,387 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 06:39:52,387 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 06:39:52,388 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 06:39:52,395 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:39:52" (1/1) ... [2023-11-29 06:39:52,448 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:39:52" (1/1) ... [2023-11-29 06:39:52,771 INFO L138 Inliner]: procedures = 34, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 5034 [2023-11-29 06:39:52,771 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 06:39:52,772 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 06:39:52,772 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 06:39:52,772 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 06:39:52,784 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:39:52" (1/1) ... [2023-11-29 06:39:52,784 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:39:52" (1/1) ... [2023-11-29 06:39:52,830 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:39:52" (1/1) ... [2023-11-29 06:39:53,019 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 06:39:53,019 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:39:52" (1/1) ... [2023-11-29 06:39:53,019 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:39:52" (1/1) ... [2023-11-29 06:39:53,183 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:39:52" (1/1) ... [2023-11-29 06:39:53,211 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:39:52" (1/1) ... [2023-11-29 06:39:53,229 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:39:52" (1/1) ... [2023-11-29 06:39:53,245 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:39:52" (1/1) ... [2023-11-29 06:39:53,335 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 06:39:53,336 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 06:39:53,336 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 06:39:53,337 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 06:39:53,338 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:39:52" (1/1) ... [2023-11-29 06:39:53,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:39:53,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:39:53,375 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 06:39:53,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 06:39:53,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 06:39:53,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 06:39:53,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 06:39:53,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 06:39:53,532 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 06:39:53,535 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 06:39:58,452 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 06:39:58,539 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 06:39:58,539 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 06:39:58,541 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:39:58 BoogieIcfgContainer [2023-11-29 06:39:58,541 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 06:39:58,543 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 06:39:58,544 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 06:39:58,547 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 06:39:58,547 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:39:50" (1/3) ... [2023-11-29 06:39:58,547 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4496921a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:39:58, skipping insertion in model container [2023-11-29 06:39:58,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:39:52" (2/3) ... [2023-11-29 06:39:58,548 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4496921a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:39:58, skipping insertion in model container [2023-11-29 06:39:58,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:39:58" (3/3) ... [2023-11-29 06:39:58,550 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label05.c [2023-11-29 06:39:58,567 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 06:39:58,567 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 06:39:58,640 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 06:39:58,647 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;@315e72f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 06:39:58,648 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 06:39:58,657 INFO L276 IsEmpty]: Start isEmpty. Operand has 820 states, 817 states have (on average 1.97796817625459) internal successors, (1616), 819 states have internal predecessors, (1616), 0 states have call successors, (0), 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 06:39:58,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-29 06:39:58,665 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:39:58,665 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:39:58,666 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:39:58,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:58,671 INFO L85 PathProgramCache]: Analyzing trace with hash -404549255, now seen corresponding path program 1 times [2023-11-29 06:39:58,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:58,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901343248] [2023-11-29 06:39:58,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:58,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:58,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:58,881 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 06:39:58,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:58,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901343248] [2023-11-29 06:39:58,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901343248] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:39:58,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:39:58,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:39:58,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355747238] [2023-11-29 06:39:58,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:39:58,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 06:39:58,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:58,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 06:39:58,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 06:39:58,924 INFO L87 Difference]: Start difference. First operand has 820 states, 817 states have (on average 1.97796817625459) internal successors, (1616), 819 states have internal predecessors, (1616), 0 states have call successors, (0), 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 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 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 06:39:59,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:39:59,012 INFO L93 Difference]: Finished difference Result 1613 states and 3180 transitions. [2023-11-29 06:39:59,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 06:39:59,014 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2023-11-29 06:39:59,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:39:59,032 INFO L225 Difference]: With dead ends: 1613 [2023-11-29 06:39:59,032 INFO L226 Difference]: Without dead ends: 816 [2023-11-29 06:39:59,038 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 06:39:59,041 INFO L413 NwaCegarLoop]: 1545 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, 1545 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 06:39:59,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1545 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:39:59,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2023-11-29 06:39:59,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 816. [2023-11-29 06:39:59,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 814 states have (on average 1.898034398034398) internal successors, (1545), 815 states have internal predecessors, (1545), 0 states have call successors, (0), 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 06:39:59,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1545 transitions. [2023-11-29 06:39:59,112 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1545 transitions. Word has length 19 [2023-11-29 06:39:59,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:39:59,113 INFO L495 AbstractCegarLoop]: Abstraction has 816 states and 1545 transitions. [2023-11-29 06:39:59,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 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 06:39:59,113 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1545 transitions. [2023-11-29 06:39:59,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-29 06:39:59,114 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:39:59,114 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:39:59,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 06:39:59,115 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:39:59,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:59,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1684412933, now seen corresponding path program 1 times [2023-11-29 06:39:59,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:59,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603000883] [2023-11-29 06:39:59,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:59,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:59,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:59,388 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 06:39:59,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:59,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603000883] [2023-11-29 06:39:59,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603000883] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:39:59,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:39:59,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 06:39:59,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751290514] [2023-11-29 06:39:59,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:39:59,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:39:59,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:59,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:39:59,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:39:59,393 INFO L87 Difference]: Start difference. First operand 816 states and 1545 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 06:39:59,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:39:59,503 INFO L93 Difference]: Finished difference Result 889 states and 1660 transitions. [2023-11-29 06:39:59,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:39:59,504 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2023-11-29 06:39:59,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:39:59,510 INFO L225 Difference]: With dead ends: 889 [2023-11-29 06:39:59,510 INFO L226 Difference]: Without dead ends: 851 [2023-11-29 06:39:59,511 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 06:39:59,512 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 55 mSDsluCounter, 3052 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 4592 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:39:59,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 4592 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:39:59,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2023-11-29 06:39:59,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 816. [2023-11-29 06:39:59,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 814 states have (on average 1.8697788697788698) internal successors, (1522), 815 states have internal predecessors, (1522), 0 states have call successors, (0), 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 06:39:59,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1522 transitions. [2023-11-29 06:39:59,538 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1522 transitions. Word has length 19 [2023-11-29 06:39:59,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:39:59,539 INFO L495 AbstractCegarLoop]: Abstraction has 816 states and 1522 transitions. [2023-11-29 06:39:59,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 06:39:59,539 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1522 transitions. [2023-11-29 06:39:59,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-29 06:39:59,541 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:39:59,541 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] [2023-11-29 06:39:59,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 06:39:59,542 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:39:59,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:59,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1796642934, now seen corresponding path program 1 times [2023-11-29 06:39:59,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:59,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385340705] [2023-11-29 06:39:59,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:59,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:59,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:59,694 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 06:39:59,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:59,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385340705] [2023-11-29 06:39:59,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385340705] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:39:59,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:39:59,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:39:59,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471244751] [2023-11-29 06:39:59,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:39:59,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:39:59,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:59,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:39:59,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:39:59,698 INFO L87 Difference]: Start difference. First operand 816 states and 1522 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 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 06:39:59,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:39:59,944 INFO L93 Difference]: Finished difference Result 1096 states and 1970 transitions. [2023-11-29 06:39:59,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 06:39:59,944 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2023-11-29 06:39:59,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:39:59,950 INFO L225 Difference]: With dead ends: 1096 [2023-11-29 06:39:59,951 INFO L226 Difference]: Without dead ends: 1061 [2023-11-29 06:39:59,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-29 06:39:59,954 INFO L413 NwaCegarLoop]: 1515 mSDtfsCounter, 6246 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6246 SdHoareTripleChecker+Valid, 2155 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:39:59,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6246 Valid, 2155 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:39:59,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2023-11-29 06:39:59,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 849. [2023-11-29 06:39:59,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 847 states have (on average 1.859504132231405) internal successors, (1575), 848 states have internal predecessors, (1575), 0 states have call successors, (0), 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 06:39:59,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1575 transitions. [2023-11-29 06:39:59,976 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1575 transitions. Word has length 41 [2023-11-29 06:39:59,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:39:59,976 INFO L495 AbstractCegarLoop]: Abstraction has 849 states and 1575 transitions. [2023-11-29 06:39:59,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 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 06:39:59,977 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1575 transitions. [2023-11-29 06:39:59,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-29 06:39:59,979 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:39:59,979 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] [2023-11-29 06:39:59,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 06:39:59,979 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:39:59,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:59,980 INFO L85 PathProgramCache]: Analyzing trace with hash -125681594, now seen corresponding path program 1 times [2023-11-29 06:39:59,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:59,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891526217] [2023-11-29 06:39:59,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:59,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:59,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:40:00,044 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 06:40:00,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:40:00,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891526217] [2023-11-29 06:40:00,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891526217] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:40:00,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:40:00,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:40:00,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365163122] [2023-11-29 06:40:00,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:40:00,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:40:00,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:40:00,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:40:00,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:40:00,046 INFO L87 Difference]: Start difference. First operand 849 states and 1575 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 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 06:40:00,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:40:00,113 INFO L93 Difference]: Finished difference Result 974 states and 1774 transitions. [2023-11-29 06:40:00,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:40:00,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-11-29 06:40:00,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:40:00,119 INFO L225 Difference]: With dead ends: 974 [2023-11-29 06:40:00,119 INFO L226 Difference]: Without dead ends: 906 [2023-11-29 06:40:00,120 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 06:40:00,121 INFO L413 NwaCegarLoop]: 1517 mSDtfsCounter, 1472 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1567 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 06:40:00,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1567 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:40:00,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2023-11-29 06:40:00,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 904. [2023-11-29 06:40:00,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 902 states have (on average 1.8414634146341464) internal successors, (1661), 903 states have internal predecessors, (1661), 0 states have call successors, (0), 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 06:40:00,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1661 transitions. [2023-11-29 06:40:00,144 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1661 transitions. Word has length 43 [2023-11-29 06:40:00,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:40:00,145 INFO L495 AbstractCegarLoop]: Abstraction has 904 states and 1661 transitions. [2023-11-29 06:40:00,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 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 06:40:00,145 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1661 transitions. [2023-11-29 06:40:00,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-29 06:40:00,147 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:40:00,147 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] [2023-11-29 06:40:00,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 06:40:00,148 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:40:00,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:40:00,149 INFO L85 PathProgramCache]: Analyzing trace with hash -123536642, now seen corresponding path program 1 times [2023-11-29 06:40:00,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:40:00,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81326953] [2023-11-29 06:40:00,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:40:00,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:40:00,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:40:00,388 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 06:40:00,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:40:00,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81326953] [2023-11-29 06:40:00,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81326953] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:40:00,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:40:00,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:40:00,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266837491] [2023-11-29 06:40:00,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:40:00,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:40:00,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:40:00,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:40:00,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:40:00,391 INFO L87 Difference]: Start difference. First operand 904 states and 1661 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 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 06:40:00,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:40:00,582 INFO L93 Difference]: Finished difference Result 1029 states and 1857 transitions. [2023-11-29 06:40:00,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:40:00,583 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-11-29 06:40:00,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:40:00,590 INFO L225 Difference]: With dead ends: 1029 [2023-11-29 06:40:00,591 INFO L226 Difference]: Without dead ends: 906 [2023-11-29 06:40:00,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:40:00,593 INFO L413 NwaCegarLoop]: 1513 mSDtfsCounter, 4440 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4440 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:40:00,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4440 Valid, 1669 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:40:00,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2023-11-29 06:40:00,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 904. [2023-11-29 06:40:00,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 902 states have (on average 1.8392461197339247) internal successors, (1659), 903 states have internal predecessors, (1659), 0 states have call successors, (0), 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 06:40:00,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1659 transitions. [2023-11-29 06:40:00,631 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1659 transitions. Word has length 43 [2023-11-29 06:40:00,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:40:00,632 INFO L495 AbstractCegarLoop]: Abstraction has 904 states and 1659 transitions. [2023-11-29 06:40:00,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 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 06:40:00,632 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1659 transitions. [2023-11-29 06:40:00,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-29 06:40:00,634 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:40:00,634 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] [2023-11-29 06:40:00,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 06:40:00,635 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:40:00,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:40:00,636 INFO L85 PathProgramCache]: Analyzing trace with hash 336976631, now seen corresponding path program 1 times [2023-11-29 06:40:00,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:40:00,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354568460] [2023-11-29 06:40:00,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:40:00,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:40:00,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:40:00,855 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 06:40:00,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:40:00,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354568460] [2023-11-29 06:40:00,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354568460] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:40:00,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:40:00,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 06:40:00,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96385219] [2023-11-29 06:40:00,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:40:00,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:40:00,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:40:00,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:40:00,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:40:00,857 INFO L87 Difference]: Start difference. First operand 904 states and 1659 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 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 06:40:00,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:40:00,922 INFO L93 Difference]: Finished difference Result 912 states and 1668 transitions. [2023-11-29 06:40:00,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:40:00,923 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2023-11-29 06:40:00,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:40:00,930 INFO L225 Difference]: With dead ends: 912 [2023-11-29 06:40:00,930 INFO L226 Difference]: Without dead ends: 910 [2023-11-29 06:40:00,931 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 06:40:00,932 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 1 mSDsluCounter, 3028 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4546 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 06:40:00,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4546 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:40:00,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2023-11-29 06:40:00,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 908. [2023-11-29 06:40:00,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 908 states, 906 states have (on average 1.8344370860927153) internal successors, (1662), 907 states have internal predecessors, (1662), 0 states have call successors, (0), 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 06:40:00,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1662 transitions. [2023-11-29 06:40:00,963 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 1662 transitions. Word has length 44 [2023-11-29 06:40:00,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:40:00,964 INFO L495 AbstractCegarLoop]: Abstraction has 908 states and 1662 transitions. [2023-11-29 06:40:00,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 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 06:40:00,964 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 1662 transitions. [2023-11-29 06:40:00,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-29 06:40:00,965 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:40:00,965 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] [2023-11-29 06:40:00,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 06:40:00,966 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:40:00,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:40:00,966 INFO L85 PathProgramCache]: Analyzing trace with hash 514996542, now seen corresponding path program 1 times [2023-11-29 06:40:00,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:40:00,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563119856] [2023-11-29 06:40:00,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:40:00,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:40:00,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:40:01,025 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 06:40:01,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:40:01,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563119856] [2023-11-29 06:40:01,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563119856] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:40:01,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:40:01,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:40:01,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553212308] [2023-11-29 06:40:01,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:40:01,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:40:01,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:40:01,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:40:01,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:40:01,028 INFO L87 Difference]: Start difference. First operand 908 states and 1662 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 06:40:01,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:40:01,076 INFO L93 Difference]: Finished difference Result 1046 states and 1875 transitions. [2023-11-29 06:40:01,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:40:01,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2023-11-29 06:40:01,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:40:01,084 INFO L225 Difference]: With dead ends: 1046 [2023-11-29 06:40:01,084 INFO L226 Difference]: Without dead ends: 974 [2023-11-29 06:40:01,085 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 06:40:01,086 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 1484 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 1615 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 06:40:01,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 1615 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:40:01,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2023-11-29 06:40:01,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 972. [2023-11-29 06:40:01,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 970 states have (on average 1.81340206185567) internal successors, (1759), 971 states have internal predecessors, (1759), 0 states have call successors, (0), 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 06:40:01,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1759 transitions. [2023-11-29 06:40:01,121 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1759 transitions. Word has length 45 [2023-11-29 06:40:01,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:40:01,121 INFO L495 AbstractCegarLoop]: Abstraction has 972 states and 1759 transitions. [2023-11-29 06:40:01,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 06:40:01,122 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1759 transitions. [2023-11-29 06:40:01,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-29 06:40:01,123 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:40:01,123 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] [2023-11-29 06:40:01,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 06:40:01,123 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:40:01,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:40:01,124 INFO L85 PathProgramCache]: Analyzing trace with hash -70715586, now seen corresponding path program 1 times [2023-11-29 06:40:01,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:40:01,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781630808] [2023-11-29 06:40:01,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:40:01,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:40:01,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:40:01,179 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 06:40:01,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:40:01,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781630808] [2023-11-29 06:40:01,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781630808] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:40:01,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:40:01,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:40:01,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530942266] [2023-11-29 06:40:01,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:40:01,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:40:01,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:40:01,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:40:01,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:40:01,181 INFO L87 Difference]: Start difference. First operand 972 states and 1759 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 06:40:01,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:40:01,222 INFO L93 Difference]: Finished difference Result 1326 states and 2299 transitions. [2023-11-29 06:40:01,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:40:01,222 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2023-11-29 06:40:01,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:40:01,229 INFO L225 Difference]: With dead ends: 1326 [2023-11-29 06:40:01,230 INFO L226 Difference]: Without dead ends: 1137 [2023-11-29 06:40:01,230 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 06:40:01,231 INFO L413 NwaCegarLoop]: 1551 mSDtfsCounter, 1480 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1615 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 06:40:01,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1615 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:40:01,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2023-11-29 06:40:01,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 1135. [2023-11-29 06:40:01,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 1133 states have (on average 1.766107678729038) internal successors, (2001), 1134 states have internal predecessors, (2001), 0 states have call successors, (0), 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 06:40:01,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 2001 transitions. [2023-11-29 06:40:01,265 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 2001 transitions. Word has length 45 [2023-11-29 06:40:01,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:40:01,265 INFO L495 AbstractCegarLoop]: Abstraction has 1135 states and 2001 transitions. [2023-11-29 06:40:01,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 06:40:01,266 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 2001 transitions. [2023-11-29 06:40:01,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-29 06:40:01,266 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:40:01,267 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] [2023-11-29 06:40:01,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 06:40:01,267 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:40:01,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:40:01,267 INFO L85 PathProgramCache]: Analyzing trace with hash 818017854, now seen corresponding path program 1 times [2023-11-29 06:40:01,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:40:01,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017839833] [2023-11-29 06:40:01,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:40:01,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:40:01,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:40:01,317 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 06:40:01,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:40:01,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017839833] [2023-11-29 06:40:01,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017839833] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:40:01,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:40:01,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:40:01,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109785746] [2023-11-29 06:40:01,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:40:01,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:40:01,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:40:01,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:40:01,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:40:01,320 INFO L87 Difference]: Start difference. First operand 1135 states and 2001 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 06:40:01,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:40:01,369 INFO L93 Difference]: Finished difference Result 1791 states and 2983 transitions. [2023-11-29 06:40:01,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:40:01,370 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2023-11-29 06:40:01,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:40:01,378 INFO L225 Difference]: With dead ends: 1791 [2023-11-29 06:40:01,379 INFO L226 Difference]: Without dead ends: 1439 [2023-11-29 06:40:01,380 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 06:40:01,380 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 1478 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 1617 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 06:40:01,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1478 Valid, 1617 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:40:01,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1439 states. [2023-11-29 06:40:01,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1439 to 1437. [2023-11-29 06:40:01,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1437 states, 1435 states have (on average 1.6982578397212544) internal successors, (2437), 1436 states have internal predecessors, (2437), 0 states have call successors, (0), 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 06:40:01,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 2437 transitions. [2023-11-29 06:40:01,424 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 2437 transitions. Word has length 45 [2023-11-29 06:40:01,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:40:01,425 INFO L495 AbstractCegarLoop]: Abstraction has 1437 states and 2437 transitions. [2023-11-29 06:40:01,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 06:40:01,425 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 2437 transitions. [2023-11-29 06:40:01,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-29 06:40:01,425 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:40:01,426 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] [2023-11-29 06:40:01,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 06:40:01,426 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:40:01,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:40:01,426 INFO L85 PathProgramCache]: Analyzing trace with hash 554940478, now seen corresponding path program 1 times [2023-11-29 06:40:01,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:40:01,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136734114] [2023-11-29 06:40:01,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:40:01,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:40:01,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:40:01,469 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 06:40:01,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:40:01,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136734114] [2023-11-29 06:40:01,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136734114] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:40:01,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:40:01,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:40:01,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347959549] [2023-11-29 06:40:01,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:40:01,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:40:01,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:40:01,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:40:01,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:40:01,471 INFO L87 Difference]: Start difference. First operand 1437 states and 2437 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 06:40:01,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:40:01,531 INFO L93 Difference]: Finished difference Result 2649 states and 4207 transitions. [2023-11-29 06:40:01,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:40:01,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2023-11-29 06:40:01,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:40:01,542 INFO L225 Difference]: With dead ends: 2649 [2023-11-29 06:40:01,542 INFO L226 Difference]: Without dead ends: 1995 [2023-11-29 06:40:01,544 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 06:40:01,544 INFO L413 NwaCegarLoop]: 1561 mSDtfsCounter, 1482 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1621 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 06:40:01,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1621 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:40:01,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1995 states. [2023-11-29 06:40:01,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1995 to 1993. [2023-11-29 06:40:01,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1993 states, 1991 states have (on average 1.6137619286790557) internal successors, (3213), 1992 states have internal predecessors, (3213), 0 states have call successors, (0), 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 06:40:01,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1993 states to 1993 states and 3213 transitions. [2023-11-29 06:40:01,632 INFO L78 Accepts]: Start accepts. Automaton has 1993 states and 3213 transitions. Word has length 45 [2023-11-29 06:40:01,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:40:01,633 INFO L495 AbstractCegarLoop]: Abstraction has 1993 states and 3213 transitions. [2023-11-29 06:40:01,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 06:40:01,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1993 states and 3213 transitions. [2023-11-29 06:40:01,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-29 06:40:01,634 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:40:01,634 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] [2023-11-29 06:40:01,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 06:40:01,634 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:40:01,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:40:01,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1594147338, now seen corresponding path program 1 times [2023-11-29 06:40:01,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:40:01,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157513696] [2023-11-29 06:40:01,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:40:01,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:40:01,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:40:01,772 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 06:40:01,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:40:01,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157513696] [2023-11-29 06:40:01,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157513696] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:40:01,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:40:01,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:40:01,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801076778] [2023-11-29 06:40:01,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:40:01,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:40:01,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:40:01,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:40:01,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:40:01,774 INFO L87 Difference]: Start difference. First operand 1993 states and 3213 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 06:40:09,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:40:09,505 INFO L93 Difference]: Finished difference Result 4248 states and 7522 transitions. [2023-11-29 06:40:09,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:40:09,506 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2023-11-29 06:40:09,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:40:09,523 INFO L225 Difference]: With dead ends: 4248 [2023-11-29 06:40:09,523 INFO L226 Difference]: Without dead ends: 3495 [2023-11-29 06:40:09,524 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 06:40:09,525 INFO L413 NwaCegarLoop]: 755 mSDtfsCounter, 2360 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5357 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2360 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 6510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2023-11-29 06:40:09,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2360 Valid, 773 Invalid, 6510 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1153 Valid, 5357 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2023-11-29 06:40:09,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3495 states. [2023-11-29 06:40:09,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3495 to 3495. [2023-11-29 06:40:09,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3495 states, 3493 states have (on average 1.5250501002004009) internal successors, (5327), 3494 states have internal predecessors, (5327), 0 states have call successors, (0), 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 06:40:09,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3495 states to 3495 states and 5327 transitions. [2023-11-29 06:40:09,650 INFO L78 Accepts]: Start accepts. Automaton has 3495 states and 5327 transitions. Word has length 59 [2023-11-29 06:40:09,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:40:09,650 INFO L495 AbstractCegarLoop]: Abstraction has 3495 states and 5327 transitions. [2023-11-29 06:40:09,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 06:40:09,650 INFO L276 IsEmpty]: Start isEmpty. Operand 3495 states and 5327 transitions. [2023-11-29 06:40:09,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-29 06:40:09,652 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:40:09,652 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] [2023-11-29 06:40:09,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 06:40:09,652 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:40:09,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:40:09,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1873610167, now seen corresponding path program 1 times [2023-11-29 06:40:09,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:40:09,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059333247] [2023-11-29 06:40:09,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:40:09,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:40:09,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:40:09,802 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 06:40:09,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:40:09,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059333247] [2023-11-29 06:40:09,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059333247] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:40:09,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:40:09,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:40:09,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251102113] [2023-11-29 06:40:09,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:40:09,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:40:09,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:40:09,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:40:09,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:40:09,805 INFO L87 Difference]: Start difference. First operand 3495 states and 5327 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 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 06:40:10,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:40:10,127 INFO L93 Difference]: Finished difference Result 8257 states and 12188 transitions. [2023-11-29 06:40:10,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:40:10,128 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 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 61 [2023-11-29 06:40:10,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:40:10,177 INFO L225 Difference]: With dead ends: 8257 [2023-11-29 06:40:10,177 INFO L226 Difference]: Without dead ends: 7391 [2023-11-29 06:40:10,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:40:10,182 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 4637 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4637 SdHoareTripleChecker+Valid, 3284 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:40:10,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4637 Valid, 3284 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:40:10,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7391 states. [2023-11-29 06:40:10,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7391 to 4535. [2023-11-29 06:40:10,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4535 states, 4533 states have (on average 1.5016545334215752) internal successors, (6807), 4534 states have internal predecessors, (6807), 0 states have call successors, (0), 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 06:40:10,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4535 states to 4535 states and 6807 transitions. [2023-11-29 06:40:10,431 INFO L78 Accepts]: Start accepts. Automaton has 4535 states and 6807 transitions. Word has length 61 [2023-11-29 06:40:10,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:40:10,431 INFO L495 AbstractCegarLoop]: Abstraction has 4535 states and 6807 transitions. [2023-11-29 06:40:10,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 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 06:40:10,432 INFO L276 IsEmpty]: Start isEmpty. Operand 4535 states and 6807 transitions. [2023-11-29 06:40:10,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-29 06:40:10,433 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:40:10,434 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] [2023-11-29 06:40:10,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 06:40:10,434 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:40:10,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:40:10,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1287898039, now seen corresponding path program 1 times [2023-11-29 06:40:10,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:40:10,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638515927] [2023-11-29 06:40:10,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:40:10,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:40:10,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:40:10,574 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 06:40:10,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:40:10,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638515927] [2023-11-29 06:40:10,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638515927] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:40:10,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:40:10,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:40:10,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959062341] [2023-11-29 06:40:10,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:40:10,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:40:10,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:40:10,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:40:10,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:40:10,577 INFO L87 Difference]: Start difference. First operand 4535 states and 6807 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 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 06:40:11,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:40:11,012 INFO L93 Difference]: Finished difference Result 9465 states and 13916 transitions. [2023-11-29 06:40:11,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:40:11,013 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 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 61 [2023-11-29 06:40:11,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:40:11,052 INFO L225 Difference]: With dead ends: 9465 [2023-11-29 06:40:11,053 INFO L226 Difference]: Without dead ends: 8255 [2023-11-29 06:40:11,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:40:11,058 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 4672 mSDsluCounter, 1738 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4672 SdHoareTripleChecker+Valid, 3304 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:40:11,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4672 Valid, 3304 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:40:11,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8255 states. [2023-11-29 06:40:11,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8255 to 6175. [2023-11-29 06:40:11,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6175 states, 6173 states have (on average 1.4798315243803661) internal successors, (9135), 6174 states have internal predecessors, (9135), 0 states have call successors, (0), 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 06:40:11,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6175 states to 6175 states and 9135 transitions. [2023-11-29 06:40:11,418 INFO L78 Accepts]: Start accepts. Automaton has 6175 states and 9135 transitions. Word has length 61 [2023-11-29 06:40:11,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:40:11,418 INFO L495 AbstractCegarLoop]: Abstraction has 6175 states and 9135 transitions. [2023-11-29 06:40:11,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 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 06:40:11,419 INFO L276 IsEmpty]: Start isEmpty. Operand 6175 states and 9135 transitions. [2023-11-29 06:40:11,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-29 06:40:11,421 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:40:11,421 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] [2023-11-29 06:40:11,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 06:40:11,421 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:40:11,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:40:11,422 INFO L85 PathProgramCache]: Analyzing trace with hash -2118335817, now seen corresponding path program 1 times [2023-11-29 06:40:11,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:40:11,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343798496] [2023-11-29 06:40:11,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:40:11,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:40:11,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:40:11,563 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 06:40:11,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:40:11,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343798496] [2023-11-29 06:40:11,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343798496] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:40:11,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:40:11,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:40:11,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660143080] [2023-11-29 06:40:11,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:40:11,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:40:11,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:40:11,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:40:11,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:40:11,566 INFO L87 Difference]: Start difference. First operand 6175 states and 9135 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 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 06:40:11,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:40:11,941 INFO L93 Difference]: Finished difference Result 10673 states and 15636 transitions. [2023-11-29 06:40:11,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:40:11,942 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 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 61 [2023-11-29 06:40:11,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:40:11,957 INFO L225 Difference]: With dead ends: 10673 [2023-11-29 06:40:11,957 INFO L226 Difference]: Without dead ends: 9463 [2023-11-29 06:40:11,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:40:11,962 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 4667 mSDsluCounter, 1752 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4667 SdHoareTripleChecker+Valid, 3318 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:40:11,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4667 Valid, 3318 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:40:11,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9463 states. [2023-11-29 06:40:12,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9463 to 7383. [2023-11-29 06:40:12,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7383 states, 7381 states have (on average 1.4706679311746376) internal successors, (10855), 7382 states have internal predecessors, (10855), 0 states have call successors, (0), 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 06:40:12,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7383 states to 7383 states and 10855 transitions. [2023-11-29 06:40:12,279 INFO L78 Accepts]: Start accepts. Automaton has 7383 states and 10855 transitions. Word has length 61 [2023-11-29 06:40:12,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:40:12,280 INFO L495 AbstractCegarLoop]: Abstraction has 7383 states and 10855 transitions. [2023-11-29 06:40:12,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 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 06:40:12,281 INFO L276 IsEmpty]: Start isEmpty. Operand 7383 states and 10855 transitions. [2023-11-29 06:40:12,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-29 06:40:12,282 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:40:12,283 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] [2023-11-29 06:40:12,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 06:40:12,283 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:40:12,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:40:12,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1913554103, now seen corresponding path program 1 times [2023-11-29 06:40:12,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:40:12,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251602949] [2023-11-29 06:40:12,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:40:12,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:40:12,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:40:12,423 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 06:40:12,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:40:12,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251602949] [2023-11-29 06:40:12,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251602949] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:40:12,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:40:12,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:40:12,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130102164] [2023-11-29 06:40:12,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:40:12,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:40:12,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:40:12,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:40:12,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:40:12,425 INFO L87 Difference]: Start difference. First operand 7383 states and 10855 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 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 06:40:12,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:40:12,828 INFO L93 Difference]: Finished difference Result 11881 states and 17356 transitions. [2023-11-29 06:40:12,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:40:12,828 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 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 61 [2023-11-29 06:40:12,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:40:12,853 INFO L225 Difference]: With dead ends: 11881 [2023-11-29 06:40:12,853 INFO L226 Difference]: Without dead ends: 10671 [2023-11-29 06:40:12,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:40:12,860 INFO L413 NwaCegarLoop]: 1565 mSDtfsCounter, 4639 mSDsluCounter, 1774 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4639 SdHoareTripleChecker+Valid, 3339 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:40:12,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4639 Valid, 3339 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:40:12,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10671 states. [2023-11-29 06:40:13,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10671 to 8591. [2023-11-29 06:40:13,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8591 states, 8589 states have (on average 1.4640819653044592) internal successors, (12575), 8590 states have internal predecessors, (12575), 0 states have call successors, (0), 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 06:40:13,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8591 states to 8591 states and 12575 transitions. [2023-11-29 06:40:13,224 INFO L78 Accepts]: Start accepts. Automaton has 8591 states and 12575 transitions. Word has length 61 [2023-11-29 06:40:13,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:40:13,225 INFO L495 AbstractCegarLoop]: Abstraction has 8591 states and 12575 transitions. [2023-11-29 06:40:13,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 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 06:40:13,225 INFO L276 IsEmpty]: Start isEmpty. Operand 8591 states and 12575 transitions. [2023-11-29 06:40:13,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-29 06:40:13,227 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:40:13,227 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] [2023-11-29 06:40:13,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 06:40:13,228 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:40:13,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:40:13,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1134695091, now seen corresponding path program 1 times [2023-11-29 06:40:13,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:40:13,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499120879] [2023-11-29 06:40:13,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:40:13,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:40:13,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:40:13,362 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:13,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:40:13,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499120879] [2023-11-29 06:40:13,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499120879] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:40:13,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:40:13,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:40:13,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654935813] [2023-11-29 06:40:13,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:40:13,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:40:13,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:40:13,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:40:13,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:40:13,365 INFO L87 Difference]: Start difference. First operand 8591 states and 12575 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 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 06:40:13,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:40:13,634 INFO L93 Difference]: Finished difference Result 14899 states and 21569 transitions. [2023-11-29 06:40:13,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:40:13,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2023-11-29 06:40:13,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:40:13,654 INFO L225 Difference]: With dead ends: 14899 [2023-11-29 06:40:13,654 INFO L226 Difference]: Without dead ends: 8593 [2023-11-29 06:40:13,664 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 06:40:13,665 INFO L413 NwaCegarLoop]: 1545 mSDtfsCounter, 37 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3053 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 06:40:13,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 3053 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:40:13,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8593 states. [2023-11-29 06:40:13,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8593 to 8591. [2023-11-29 06:40:13,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8591 states, 8589 states have (on average 1.4496448946326697) internal successors, (12451), 8590 states have internal predecessors, (12451), 0 states have call successors, (0), 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 06:40:14,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8591 states to 8591 states and 12451 transitions. [2023-11-29 06:40:14,004 INFO L78 Accepts]: Start accepts. Automaton has 8591 states and 12451 transitions. Word has length 62 [2023-11-29 06:40:14,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:40:14,005 INFO L495 AbstractCegarLoop]: Abstraction has 8591 states and 12451 transitions. [2023-11-29 06:40:14,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 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 06:40:14,005 INFO L276 IsEmpty]: Start isEmpty. Operand 8591 states and 12451 transitions. [2023-11-29 06:40:14,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-29 06:40:14,006 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:40:14,007 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] [2023-11-29 06:40:14,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 06:40:14,007 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:40:14,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:40:14,007 INFO L85 PathProgramCache]: Analyzing trace with hash 558947071, now seen corresponding path program 1 times [2023-11-29 06:40:14,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:40:14,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37867985] [2023-11-29 06:40:14,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:40:14,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:40:14,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:40:14,104 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:14,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:40:14,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37867985] [2023-11-29 06:40:14,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37867985] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:40:14,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:40:14,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:40:14,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900612040] [2023-11-29 06:40:14,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:40:14,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:40:14,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:40:14,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:40:14,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:40:14,107 INFO L87 Difference]: Start difference. First operand 8591 states and 12451 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 06:40:14,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:40:14,236 INFO L93 Difference]: Finished difference Result 10987 states and 15858 transitions. [2023-11-29 06:40:14,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:40:14,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2023-11-29 06:40:14,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:40:14,247 INFO L225 Difference]: With dead ends: 10987 [2023-11-29 06:40:14,247 INFO L226 Difference]: Without dead ends: 4681 [2023-11-29 06:40:14,256 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 06:40:14,257 INFO L413 NwaCegarLoop]: 1543 mSDtfsCounter, 31 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3050 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 06:40:14,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3050 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:40:14,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4681 states. [2023-11-29 06:40:14,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4681 to 4674. [2023-11-29 06:40:14,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4674 states, 4672 states have (on average 1.4850171232876712) internal successors, (6938), 4673 states have internal predecessors, (6938), 0 states have call successors, (0), 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 06:40:14,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4674 states to 4674 states and 6938 transitions. [2023-11-29 06:40:14,458 INFO L78 Accepts]: Start accepts. Automaton has 4674 states and 6938 transitions. Word has length 63 [2023-11-29 06:40:14,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:40:14,459 INFO L495 AbstractCegarLoop]: Abstraction has 4674 states and 6938 transitions. [2023-11-29 06:40:14,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 06:40:14,459 INFO L276 IsEmpty]: Start isEmpty. Operand 4674 states and 6938 transitions. [2023-11-29 06:40:14,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-29 06:40:14,460 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:40:14,460 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] [2023-11-29 06:40:14,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 06:40:14,461 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:40:14,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:40:14,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1485090395, now seen corresponding path program 1 times [2023-11-29 06:40:14,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:40:14,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946681703] [2023-11-29 06:40:14,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:40:14,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:40:14,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:40:14,554 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:14,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:40:14,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946681703] [2023-11-29 06:40:14,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946681703] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:40:14,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:40:14,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:40:14,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989869060] [2023-11-29 06:40:14,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:40:14,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:40:14,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:40:14,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:40:14,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:40:14,557 INFO L87 Difference]: Start difference. First operand 4674 states and 6938 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:14,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:40:14,641 INFO L93 Difference]: Finished difference Result 5866 states and 8612 transitions. [2023-11-29 06:40:14,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:40:14,642 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-11-29 06:40:14,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:40:14,648 INFO L225 Difference]: With dead ends: 5866 [2023-11-29 06:40:14,648 INFO L226 Difference]: Without dead ends: 3488 [2023-11-29 06:40:14,652 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 06:40:14,653 INFO L413 NwaCegarLoop]: 1537 mSDtfsCounter, 33 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3029 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 06:40:14,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 3029 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:40:14,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3488 states. [2023-11-29 06:40:14,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3488 to 3486. [2023-11-29 06:40:14,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3486 states, 3484 states have (on average 1.505166475315729) internal successors, (5244), 3485 states have internal predecessors, (5244), 0 states have call successors, (0), 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 06:40:14,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3486 states to 3486 states and 5244 transitions. [2023-11-29 06:40:14,754 INFO L78 Accepts]: Start accepts. Automaton has 3486 states and 5244 transitions. Word has length 64 [2023-11-29 06:40:14,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:40:14,755 INFO L495 AbstractCegarLoop]: Abstraction has 3486 states and 5244 transitions. [2023-11-29 06:40:14,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:14,755 INFO L276 IsEmpty]: Start isEmpty. Operand 3486 states and 5244 transitions. [2023-11-29 06:40:14,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-29 06:40:14,756 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:40:14,756 INFO L195 NwaCegarLoop]: trace histogram [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 06:40:14,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 06:40:14,757 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:40:14,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:40:14,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1800255255, now seen corresponding path program 1 times [2023-11-29 06:40:14,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:40:14,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663939970] [2023-11-29 06:40:14,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:40:14,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:40:14,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:40:14,853 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:14,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:40:14,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663939970] [2023-11-29 06:40:14,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663939970] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:40:14,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:40:14,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:40:14,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842035443] [2023-11-29 06:40:14,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:40:14,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:40:14,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:40:14,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:40:14,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:40:14,855 INFO L87 Difference]: Start difference. First operand 3486 states and 5244 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:14,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:40:14,919 INFO L93 Difference]: Finished difference Result 4084 states and 6071 transitions. [2023-11-29 06:40:14,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:40:14,919 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-11-29 06:40:14,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:40:14,925 INFO L225 Difference]: With dead ends: 4084 [2023-11-29 06:40:14,925 INFO L226 Difference]: Without dead ends: 2894 [2023-11-29 06:40:14,928 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 06:40:14,928 INFO L413 NwaCegarLoop]: 1530 mSDtfsCounter, 30 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 3014 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 06:40:14,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 3014 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:40:14,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2023-11-29 06:40:14,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 2892. [2023-11-29 06:40:14,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 2890 states have (on average 1.5252595155709343) internal successors, (4408), 2891 states have internal predecessors, (4408), 0 states have call successors, (0), 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 06:40:15,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 4408 transitions. [2023-11-29 06:40:15,000 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 4408 transitions. Word has length 66 [2023-11-29 06:40:15,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:40:15,000 INFO L495 AbstractCegarLoop]: Abstraction has 2892 states and 4408 transitions. [2023-11-29 06:40:15,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:15,001 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 4408 transitions. [2023-11-29 06:40:15,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-29 06:40:15,002 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:40:15,002 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 06:40:15,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 06:40:15,002 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:40:15,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:40:15,003 INFO L85 PathProgramCache]: Analyzing trace with hash -200565513, now seen corresponding path program 1 times [2023-11-29 06:40:15,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:40:15,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937297096] [2023-11-29 06:40:15,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:40:15,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:40:15,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:40:17,151 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:17,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:40:17,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937297096] [2023-11-29 06:40:17,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937297096] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:40:17,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957346592] [2023-11-29 06:40:17,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:40:17,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:40:17,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:40:17,154 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:40:17,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 06:40:17,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:40:17,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 06:40:17,272 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:40:17,463 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 06:40:17,463 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:40:17,838 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 06:40:17,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957346592] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:40:17,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:40:17,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-11-29 06:40:17,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490046503] [2023-11-29 06:40:17,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:40:17,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 06:40:17,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:40:17,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 06:40:17,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-11-29 06:40:17,841 INFO L87 Difference]: Start difference. First operand 2892 states and 4408 transitions. Second operand has 18 states, 18 states have (on average 10.555555555555555) internal successors, (190), 18 states have internal predecessors, (190), 0 states have call successors, (0), 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 06:40:20,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:40:20,467 INFO L93 Difference]: Finished difference Result 7047 states and 9901 transitions. [2023-11-29 06:40:20,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-11-29 06:40:20,468 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.555555555555555) internal successors, (190), 18 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2023-11-29 06:40:20,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:40:20,475 INFO L225 Difference]: With dead ends: 7047 [2023-11-29 06:40:20,475 INFO L226 Difference]: Without dead ends: 6451 [2023-11-29 06:40:20,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1055 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=689, Invalid=2971, Unknown=0, NotChecked=0, Total=3660 [2023-11-29 06:40:20,479 INFO L413 NwaCegarLoop]: 1502 mSDtfsCounter, 12838 mSDsluCounter, 6253 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12838 SdHoareTripleChecker+Valid, 7755 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 06:40:20,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12838 Valid, 7755 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 06:40:20,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6451 states. [2023-11-29 06:40:20,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6451 to 6123. [2023-11-29 06:40:20,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6123 states, 6121 states have (on average 1.3945433752654794) internal successors, (8536), 6122 states have internal predecessors, (8536), 0 states have call successors, (0), 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 06:40:20,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6123 states to 6123 states and 8536 transitions. [2023-11-29 06:40:20,671 INFO L78 Accepts]: Start accepts. Automaton has 6123 states and 8536 transitions. Word has length 68 [2023-11-29 06:40:20,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:40:20,672 INFO L495 AbstractCegarLoop]: Abstraction has 6123 states and 8536 transitions. [2023-11-29 06:40:20,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.555555555555555) internal successors, (190), 18 states have internal predecessors, (190), 0 states have call successors, (0), 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 06:40:20,672 INFO L276 IsEmpty]: Start isEmpty. Operand 6123 states and 8536 transitions. [2023-11-29 06:40:20,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-29 06:40:20,673 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:40:20,673 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 06:40:20,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 06:40:20,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:40:20,874 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:40:20,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:40:20,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1703842709, now seen corresponding path program 1 times [2023-11-29 06:40:20,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:40:20,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475116025] [2023-11-29 06:40:20,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:40:20,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:40:20,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:40:22,568 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:22,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:40:22,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475116025] [2023-11-29 06:40:22,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475116025] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:40:22,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289207308] [2023-11-29 06:40:22,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:40:22,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:40:22,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:40:22,570 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:40:22,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 06:40:22,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:40:22,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 06:40:22,674 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:40:23,447 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:23,447 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:40:24,560 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:24,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289207308] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:40:24,561 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:40:24,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2023-11-29 06:40:24,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252413132] [2023-11-29 06:40:24,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:40:24,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-29 06:40:24,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:40:24,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-29 06:40:24,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=980, Unknown=0, NotChecked=0, Total=1122 [2023-11-29 06:40:24,564 INFO L87 Difference]: Start difference. First operand 6123 states and 8536 transitions. Second operand has 34 states, 34 states have (on average 5.5) internal successors, (187), 34 states have internal predecessors, (187), 0 states have call successors, (0), 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 06:40:28,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:40:28,567 INFO L93 Difference]: Finished difference Result 20650 states and 27280 transitions. [2023-11-29 06:40:28,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-11-29 06:40:28,568 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.5) internal successors, (187), 34 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2023-11-29 06:40:28,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:40:28,590 INFO L225 Difference]: With dead ends: 20650 [2023-11-29 06:40:28,590 INFO L226 Difference]: Without dead ends: 16960 [2023-11-29 06:40:28,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1576 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1203, Invalid=5277, Unknown=0, NotChecked=0, Total=6480 [2023-11-29 06:40:28,601 INFO L413 NwaCegarLoop]: 1498 mSDtfsCounter, 24602 mSDsluCounter, 9349 mSDsCounter, 0 mSdLazyCounter, 1045 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24602 SdHoareTripleChecker+Valid, 10847 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 06:40:28,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24602 Valid, 10847 Invalid, 1108 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [63 Valid, 1045 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 06:40:28,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16960 states. [2023-11-29 06:40:29,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16960 to 15272. [2023-11-29 06:40:29,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15272 states, 15270 states have (on average 1.3258022265880811) internal successors, (20245), 15271 states have internal predecessors, (20245), 0 states have call successors, (0), 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 06:40:29,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15272 states to 15272 states and 20245 transitions. [2023-11-29 06:40:29,191 INFO L78 Accepts]: Start accepts. Automaton has 15272 states and 20245 transitions. Word has length 69 [2023-11-29 06:40:29,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:40:29,191 INFO L495 AbstractCegarLoop]: Abstraction has 15272 states and 20245 transitions. [2023-11-29 06:40:29,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.5) internal successors, (187), 34 states have internal predecessors, (187), 0 states have call successors, (0), 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 06:40:29,192 INFO L276 IsEmpty]: Start isEmpty. Operand 15272 states and 20245 transitions. [2023-11-29 06:40:29,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-29 06:40:29,193 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:40:29,193 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 06:40:29,198 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 06:40:29,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:40:29,394 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:40:29,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:40:29,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1383295715, now seen corresponding path program 1 times [2023-11-29 06:40:29,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:40:29,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023135841] [2023-11-29 06:40:29,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:40:29,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:40:29,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:40:29,740 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:29,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:40:29,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023135841] [2023-11-29 06:40:29,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023135841] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:40:29,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272003563] [2023-11-29 06:40:29,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:40:29,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:40:29,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:40:29,744 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:40:29,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 06:40:29,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:40:29,850 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 06:40:29,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:40:30,551 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:30,551 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:40:31,706 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:31,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272003563] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:40:31,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:40:31,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 31 [2023-11-29 06:40:31,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572138268] [2023-11-29 06:40:31,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:40:31,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-29 06:40:31,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:40:31,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-29 06:40:31,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=784, Unknown=0, NotChecked=0, Total=930 [2023-11-29 06:40:31,710 INFO L87 Difference]: Start difference. First operand 15272 states and 20245 transitions. Second operand has 31 states, 31 states have (on average 6.290322580645161) internal successors, (195), 31 states have internal predecessors, (195), 0 states have call successors, (0), 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 06:40:34,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:40:34,894 INFO L93 Difference]: Finished difference Result 41402 states and 53268 transitions. [2023-11-29 06:40:34,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-11-29 06:40:34,895 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 6.290322580645161) internal successors, (195), 31 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2023-11-29 06:40:34,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:40:34,919 INFO L225 Difference]: With dead ends: 41402 [2023-11-29 06:40:34,919 INFO L226 Difference]: Without dead ends: 28854 [2023-11-29 06:40:34,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1449 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1196, Invalid=4810, Unknown=0, NotChecked=0, Total=6006 [2023-11-29 06:40:34,934 INFO L413 NwaCegarLoop]: 1502 mSDtfsCounter, 26280 mSDsluCounter, 9343 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26280 SdHoareTripleChecker+Valid, 10845 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 06:40:34,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26280 Valid, 10845 Invalid, 864 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [53 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 06:40:34,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28854 states. [2023-11-29 06:40:35,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28854 to 22568. [2023-11-29 06:40:35,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22568 states, 22566 states have (on average 1.2928299211202694) internal successors, (29174), 22567 states have internal predecessors, (29174), 0 states have call successors, (0), 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 06:40:35,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22568 states to 22568 states and 29174 transitions. [2023-11-29 06:40:35,831 INFO L78 Accepts]: Start accepts. Automaton has 22568 states and 29174 transitions. Word has length 69 [2023-11-29 06:40:35,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:40:35,831 INFO L495 AbstractCegarLoop]: Abstraction has 22568 states and 29174 transitions. [2023-11-29 06:40:35,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 6.290322580645161) internal successors, (195), 31 states have internal predecessors, (195), 0 states have call successors, (0), 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 06:40:35,832 INFO L276 IsEmpty]: Start isEmpty. Operand 22568 states and 29174 transitions. [2023-11-29 06:40:35,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-29 06:40:35,834 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:40:35,834 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 06:40:35,840 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 06:40:36,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:40:36,035 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:40:36,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:40:36,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1708631371, now seen corresponding path program 1 times [2023-11-29 06:40:36,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:40:36,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784540236] [2023-11-29 06:40:36,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:40:36,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:40:36,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:40:37,022 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:37,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:40:37,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784540236] [2023-11-29 06:40:37,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784540236] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:40:37,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757542055] [2023-11-29 06:40:37,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:40:37,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:40:37,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:40:37,025 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:40:37,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 06:40:37,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:40:37,176 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 06:40:37,189 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:40:37,774 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:37,775 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:40:39,091 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:39,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757542055] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:40:39,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:40:39,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 12] total 30 [2023-11-29 06:40:39,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303638327] [2023-11-29 06:40:39,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:40:39,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-29 06:40:39,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:40:39,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-29 06:40:39,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=763, Unknown=0, NotChecked=0, Total=870 [2023-11-29 06:40:39,094 INFO L87 Difference]: Start difference. First operand 22568 states and 29174 transitions. Second operand has 30 states, 30 states have (on average 6.366666666666666) internal successors, (191), 30 states have internal predecessors, (191), 0 states have call successors, (0), 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 06:40:44,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:40:44,313 INFO L93 Difference]: Finished difference Result 62775 states and 78786 transitions. [2023-11-29 06:40:44,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-11-29 06:40:44,314 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 6.366666666666666) internal successors, (191), 30 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2023-11-29 06:40:44,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:40:44,352 INFO L225 Difference]: With dead ends: 62775 [2023-11-29 06:40:44,352 INFO L226 Difference]: Without dead ends: 44016 [2023-11-29 06:40:44,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1691 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1092, Invalid=5228, Unknown=0, NotChecked=0, Total=6320 [2023-11-29 06:40:44,370 INFO L413 NwaCegarLoop]: 1496 mSDtfsCounter, 11508 mSDsluCounter, 18245 mSDsCounter, 0 mSdLazyCounter, 1337 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11508 SdHoareTripleChecker+Valid, 19741 SdHoareTripleChecker+Invalid, 1404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 06:40:44,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11508 Valid, 19741 Invalid, 1404 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 1337 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 06:40:44,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44016 states. [2023-11-29 06:40:45,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44016 to 36004. [2023-11-29 06:40:45,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36004 states, 36002 states have (on average 1.2607077384589744) internal successors, (45388), 36003 states have internal predecessors, (45388), 0 states have call successors, (0), 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 06:40:46,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36004 states to 36004 states and 45388 transitions. [2023-11-29 06:40:46,008 INFO L78 Accepts]: Start accepts. Automaton has 36004 states and 45388 transitions. Word has length 70 [2023-11-29 06:40:46,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:40:46,008 INFO L495 AbstractCegarLoop]: Abstraction has 36004 states and 45388 transitions. [2023-11-29 06:40:46,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.366666666666666) internal successors, (191), 30 states have internal predecessors, (191), 0 states have call successors, (0), 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 06:40:46,008 INFO L276 IsEmpty]: Start isEmpty. Operand 36004 states and 45388 transitions. [2023-11-29 06:40:46,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-29 06:40:46,010 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:40:46,010 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 06:40:46,015 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 06:40:46,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-29 06:40:46,211 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:40:46,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:40:46,211 INFO L85 PathProgramCache]: Analyzing trace with hash -993642665, now seen corresponding path program 1 times [2023-11-29 06:40:46,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:40:46,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998851008] [2023-11-29 06:40:46,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:40:46,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:40:46,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:40:46,780 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:46,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:40:46,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998851008] [2023-11-29 06:40:46,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998851008] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:40:46,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994472661] [2023-11-29 06:40:46,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:40:46,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:40:46,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:40:46,781 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:40:46,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 06:40:46,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:40:46,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 06:40:46,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:40:48,767 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:48,767 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:40:50,826 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:50,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994472661] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:40:50,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:40:50,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16, 19] total 44 [2023-11-29 06:40:50,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191488417] [2023-11-29 06:40:50,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:40:50,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-11-29 06:40:50,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:40:50,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-11-29 06:40:50,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1682, Unknown=0, NotChecked=0, Total=1892 [2023-11-29 06:40:50,828 INFO L87 Difference]: Start difference. First operand 36004 states and 45388 transitions. Second operand has 44 states, 44 states have (on average 4.159090909090909) internal successors, (183), 44 states have internal predecessors, (183), 0 states have call successors, (0), 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 06:41:07,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:41:07,526 INFO L93 Difference]: Finished difference Result 92442 states and 116500 transitions. [2023-11-29 06:41:07,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2023-11-29 06:41:07,526 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 4.159090909090909) internal successors, (183), 44 states have internal predecessors, (183), 0 states have call successors, (0), 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 71 [2023-11-29 06:41:07,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:41:07,593 INFO L225 Difference]: With dead ends: 92442 [2023-11-29 06:41:07,593 INFO L226 Difference]: Without dead ends: 79076 [2023-11-29 06:41:07,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7571 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=4162, Invalid=18790, Unknown=0, NotChecked=0, Total=22952 [2023-11-29 06:41:07,615 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 23642 mSDsluCounter, 19375 mSDsCounter, 0 mSdLazyCounter, 2239 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23642 SdHoareTripleChecker+Valid, 20941 SdHoareTripleChecker+Invalid, 2370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 2239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:41:07,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23642 Valid, 20941 Invalid, 2370 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [131 Valid, 2239 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-29 06:41:07,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79076 states. [2023-11-29 06:41:09,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79076 to 31888. [2023-11-29 06:41:09,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31888 states, 31886 states have (on average 1.2606473060277237) internal successors, (40197), 31887 states have internal predecessors, (40197), 0 states have call successors, (0), 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 06:41:09,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31888 states to 31888 states and 40197 transitions. [2023-11-29 06:41:09,355 INFO L78 Accepts]: Start accepts. Automaton has 31888 states and 40197 transitions. Word has length 71 [2023-11-29 06:41:09,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:41:09,355 INFO L495 AbstractCegarLoop]: Abstraction has 31888 states and 40197 transitions. [2023-11-29 06:41:09,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 4.159090909090909) internal successors, (183), 44 states have internal predecessors, (183), 0 states have call successors, (0), 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 06:41:09,356 INFO L276 IsEmpty]: Start isEmpty. Operand 31888 states and 40197 transitions. [2023-11-29 06:41:09,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-29 06:41:09,357 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:41:09,357 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 06:41:09,361 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 06:41:09,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-29 06:41:09,558 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:41:09,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:41:09,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1559480371, now seen corresponding path program 1 times [2023-11-29 06:41:09,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:41:09,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116862505] [2023-11-29 06:41:09,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:41:09,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:41:09,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:41:10,239 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:41:10,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:41:10,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116862505] [2023-11-29 06:41:10,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116862505] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:41:10,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433116496] [2023-11-29 06:41:10,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:41:10,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:41:10,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:41:10,241 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:41:10,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 06:41:10,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:41:10,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 06:41:10,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:41:11,412 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:41:11,412 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:41:13,419 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:41:13,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433116496] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:41:13,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:41:13,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 14] total 33 [2023-11-29 06:41:13,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878635659] [2023-11-29 06:41:13,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:41:13,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-29 06:41:13,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:41:13,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-29 06:41:13,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=912, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 06:41:13,422 INFO L87 Difference]: Start difference. First operand 31888 states and 40197 transitions. Second operand has 33 states, 33 states have (on average 5.575757575757576) internal successors, (184), 33 states have internal predecessors, (184), 0 states have call successors, (0), 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 06:41:16,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:41:16,059 INFO L93 Difference]: Finished difference Result 44456 states and 55209 transitions. [2023-11-29 06:41:16,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 06:41:16,060 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.575757575757576) internal successors, (184), 33 states have internal predecessors, (184), 0 states have call successors, (0), 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 71 [2023-11-29 06:41:16,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:41:16,084 INFO L225 Difference]: With dead ends: 44456 [2023-11-29 06:41:16,084 INFO L226 Difference]: Without dead ends: 31088 [2023-11-29 06:41:16,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=467, Invalid=1885, Unknown=0, NotChecked=0, Total=2352 [2023-11-29 06:41:16,094 INFO L413 NwaCegarLoop]: 1494 mSDtfsCounter, 9368 mSDsluCounter, 12071 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9368 SdHoareTripleChecker+Valid, 13565 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 06:41:16,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9368 Valid, 13565 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 06:41:16,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31088 states. [2023-11-29 06:41:17,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31088 to 26579. [2023-11-29 06:41:17,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26579 states, 26577 states have (on average 1.2636490198291757) internal successors, (33584), 26578 states have internal predecessors, (33584), 0 states have call successors, (0), 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 06:41:17,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26579 states to 26579 states and 33584 transitions. [2023-11-29 06:41:17,752 INFO L78 Accepts]: Start accepts. Automaton has 26579 states and 33584 transitions. Word has length 71 [2023-11-29 06:41:17,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:41:17,752 INFO L495 AbstractCegarLoop]: Abstraction has 26579 states and 33584 transitions. [2023-11-29 06:41:17,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.575757575757576) internal successors, (184), 33 states have internal predecessors, (184), 0 states have call successors, (0), 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 06:41:17,752 INFO L276 IsEmpty]: Start isEmpty. Operand 26579 states and 33584 transitions. [2023-11-29 06:41:17,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-29 06:41:17,754 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:41:17,754 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 06:41:17,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-29 06:41:17,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-29 06:41:17,955 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:41:17,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:41:17,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1823993817, now seen corresponding path program 1 times [2023-11-29 06:41:17,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:41:17,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528419652] [2023-11-29 06:41:17,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:41:17,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:41:17,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:41:20,035 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:41:20,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:41:20,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528419652] [2023-11-29 06:41:20,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528419652] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:41:20,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338572859] [2023-11-29 06:41:20,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:41:20,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:41:20,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:41:20,037 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:41:20,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 06:41:20,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:41:20,137 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 06:41:20,139 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:41:21,350 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:41:21,350 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:41:22,900 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:41:22,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338572859] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:41:22,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:41:22,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 13, 13] total 47 [2023-11-29 06:41:22,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947177394] [2023-11-29 06:41:22,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:41:22,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-11-29 06:41:22,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:41:22,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-11-29 06:41:22,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1999, Unknown=0, NotChecked=0, Total=2162 [2023-11-29 06:41:22,904 INFO L87 Difference]: Start difference. First operand 26579 states and 33584 transitions. Second operand has 47 states, 47 states have (on average 4.212765957446808) internal successors, (198), 47 states have internal predecessors, (198), 0 states have call successors, (0), 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 06:41:57,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:41:57,429 INFO L93 Difference]: Finished difference Result 62805 states and 77944 transitions. [2023-11-29 06:41:57,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2023-11-29 06:41:57,429 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 4.212765957446808) internal successors, (198), 47 states have internal predecessors, (198), 0 states have call successors, (0), 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 72 [2023-11-29 06:41:57,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:41:57,471 INFO L225 Difference]: With dead ends: 62805 [2023-11-29 06:41:57,471 INFO L226 Difference]: Without dead ends: 51308 [2023-11-29 06:41:57,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17684 ImplicationChecksByTransitivity, 28.3s TimeCoverageRelationStatistics Valid=9044, Invalid=40462, Unknown=0, NotChecked=0, Total=49506 [2023-11-29 06:41:57,485 INFO L413 NwaCegarLoop]: 1613 mSDtfsCounter, 21582 mSDsluCounter, 28349 mSDsCounter, 0 mSdLazyCounter, 4795 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21582 SdHoareTripleChecker+Valid, 29962 SdHoareTripleChecker+Invalid, 4963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 4795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-29 06:41:57,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21582 Valid, 29962 Invalid, 4963 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [168 Valid, 4795 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-11-29 06:41:57,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51308 states. [2023-11-29 06:41:59,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51308 to 23104. [2023-11-29 06:41:59,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23104 states, 23102 states have (on average 1.2678988832135747) internal successors, (29291), 23103 states have internal predecessors, (29291), 0 states have call successors, (0), 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 06:41:59,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23104 states to 23104 states and 29291 transitions. [2023-11-29 06:41:59,054 INFO L78 Accepts]: Start accepts. Automaton has 23104 states and 29291 transitions. Word has length 72 [2023-11-29 06:41:59,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:41:59,054 INFO L495 AbstractCegarLoop]: Abstraction has 23104 states and 29291 transitions. [2023-11-29 06:41:59,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 4.212765957446808) internal successors, (198), 47 states have internal predecessors, (198), 0 states have call successors, (0), 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 06:41:59,054 INFO L276 IsEmpty]: Start isEmpty. Operand 23104 states and 29291 transitions. [2023-11-29 06:41:59,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-29 06:41:59,058 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:41:59,058 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 06:41:59,063 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 06:41:59,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 06:41:59,259 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:41:59,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:41:59,260 INFO L85 PathProgramCache]: Analyzing trace with hash 112844093, now seen corresponding path program 1 times [2023-11-29 06:41:59,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:41:59,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907597138] [2023-11-29 06:41:59,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:41:59,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:41:59,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:41:59,853 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 22 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:41:59,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:41:59,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907597138] [2023-11-29 06:41:59,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907597138] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:41:59,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804804813] [2023-11-29 06:41:59,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:41:59,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:41:59,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:41:59,854 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:41:59,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 06:41:59,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:41:59,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 06:41:59,978 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:42:00,619 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 24 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:42:00,619 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:42:02,738 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 22 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:42:02,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804804813] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:42:02,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:42:02,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2023-11-29 06:42:02,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075201546] [2023-11-29 06:42:02,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:42:02,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-29 06:42:02,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:42:02,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-29 06:42:02,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2023-11-29 06:42:02,740 INFO L87 Difference]: Start difference. First operand 23104 states and 29291 transitions. Second operand has 27 states, 27 states have (on average 9.25925925925926) internal successors, (250), 26 states have internal predecessors, (250), 0 states have call successors, (0), 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 06:42:04,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:42:04,789 INFO L93 Difference]: Finished difference Result 35052 states and 44150 transitions. [2023-11-29 06:42:04,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 06:42:04,790 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 9.25925925925926) internal successors, (250), 26 states have internal predecessors, (250), 0 states have call successors, (0), 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 06:42:04,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:42:04,812 INFO L225 Difference]: With dead ends: 35052 [2023-11-29 06:42:04,812 INFO L226 Difference]: Without dead ends: 24420 [2023-11-29 06:42:04,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 210 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=448, Invalid=1532, Unknown=0, NotChecked=0, Total=1980 [2023-11-29 06:42:04,823 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 10521 mSDsluCounter, 9116 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10521 SdHoareTripleChecker+Valid, 10632 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:42:04,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10521 Valid, 10632 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 06:42:04,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24420 states. [2023-11-29 06:42:06,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24420 to 23104. [2023-11-29 06:42:06,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23104 states, 23102 states have (on average 1.2572071682105446) internal successors, (29044), 23103 states have internal predecessors, (29044), 0 states have call successors, (0), 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 06:42:06,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23104 states to 23104 states and 29044 transitions. [2023-11-29 06:42:06,284 INFO L78 Accepts]: Start accepts. Automaton has 23104 states and 29044 transitions. Word has length 113 [2023-11-29 06:42:06,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:42:06,284 INFO L495 AbstractCegarLoop]: Abstraction has 23104 states and 29044 transitions. [2023-11-29 06:42:06,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 9.25925925925926) internal successors, (250), 26 states have internal predecessors, (250), 0 states have call successors, (0), 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 06:42:06,284 INFO L276 IsEmpty]: Start isEmpty. Operand 23104 states and 29044 transitions. [2023-11-29 06:42:06,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-29 06:42:06,289 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:42:06,289 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 06:42:06,296 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 06:42:06,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 06:42:06,490 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:42:06,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:42:06,490 INFO L85 PathProgramCache]: Analyzing trace with hash 2082253373, now seen corresponding path program 1 times [2023-11-29 06:42:06,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:42:06,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336723898] [2023-11-29 06:42:06,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:42:06,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:42:06,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:07,136 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 31 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:42:07,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:42:07,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336723898] [2023-11-29 06:42:07,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336723898] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:42:07,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351342225] [2023-11-29 06:42:07,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:42:07,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:42:07,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:42:07,138 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:42:07,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 06:42:07,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:07,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 06:42:07,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:42:07,984 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 45 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:42:07,984 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:42:10,383 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 39 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:42:10,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351342225] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:42:10,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:42:10,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 32 [2023-11-29 06:42:10,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455651109] [2023-11-29 06:42:10,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:42:10,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-29 06:42:10,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:42:10,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-29 06:42:10,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=935, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 06:42:10,385 INFO L87 Difference]: Start difference. First operand 23104 states and 29044 transitions. Second operand has 33 states, 33 states have (on average 9.06060606060606) internal successors, (299), 32 states have internal predecessors, (299), 0 states have call successors, (0), 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 06:42:15,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:42:15,753 INFO L93 Difference]: Finished difference Result 39933 states and 49823 transitions. [2023-11-29 06:42:15,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-11-29 06:42:15,754 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 9.06060606060606) internal successors, (299), 32 states have internal predecessors, (299), 0 states have call successors, (0), 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 06:42:15,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:42:15,775 INFO L225 Difference]: With dead ends: 39933 [2023-11-29 06:42:15,775 INFO L226 Difference]: Without dead ends: 24152 [2023-11-29 06:42:15,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1436 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1384, Invalid=5588, Unknown=0, NotChecked=0, Total=6972 [2023-11-29 06:42:15,784 INFO L413 NwaCegarLoop]: 1505 mSDtfsCounter, 19825 mSDsluCounter, 12417 mSDsCounter, 0 mSdLazyCounter, 1099 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19825 SdHoareTripleChecker+Valid, 13922 SdHoareTripleChecker+Invalid, 1135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 06:42:15,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19825 Valid, 13922 Invalid, 1135 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [36 Valid, 1099 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 06:42:15,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24152 states. [2023-11-29 06:42:17,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24152 to 17211. [2023-11-29 06:42:17,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17211 states, 17209 states have (on average 1.249985472717764) internal successors, (21511), 17210 states have internal predecessors, (21511), 0 states have call successors, (0), 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 06:42:17,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17211 states to 17211 states and 21511 transitions. [2023-11-29 06:42:17,362 INFO L78 Accepts]: Start accepts. Automaton has 17211 states and 21511 transitions. Word has length 113 [2023-11-29 06:42:17,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:42:17,363 INFO L495 AbstractCegarLoop]: Abstraction has 17211 states and 21511 transitions. [2023-11-29 06:42:17,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 9.06060606060606) internal successors, (299), 32 states have internal predecessors, (299), 0 states have call successors, (0), 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 06:42:17,363 INFO L276 IsEmpty]: Start isEmpty. Operand 17211 states and 21511 transitions. [2023-11-29 06:42:17,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-29 06:42:17,366 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:42:17,367 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 06:42:17,374 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 06:42:17,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 06:42:17,567 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:42:17,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:42:17,568 INFO L85 PathProgramCache]: Analyzing trace with hash -52835317, now seen corresponding path program 1 times [2023-11-29 06:42:17,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:42:17,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900248732] [2023-11-29 06:42:17,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:42:17,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:42:17,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:18,234 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 13 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:42:18,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:42:18,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900248732] [2023-11-29 06:42:18,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900248732] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:42:18,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524999021] [2023-11-29 06:42:18,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:42:18,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:42:18,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:42:18,236 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:42:18,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 06:42:18,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:18,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 06:42:18,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:42:20,205 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 30 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:42:20,205 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:42:24,682 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 30 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:42:24,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524999021] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:42:24,682 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:42:24,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 18, 18] total 46 [2023-11-29 06:42:24,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107028939] [2023-11-29 06:42:24,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:42:24,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-29 06:42:24,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:42:24,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-29 06:42:24,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1902, Unknown=0, NotChecked=0, Total=2070 [2023-11-29 06:42:24,685 INFO L87 Difference]: Start difference. First operand 17211 states and 21511 transitions. Second operand has 46 states, 46 states have (on average 6.956521739130435) internal successors, (320), 46 states have internal predecessors, (320), 0 states have call successors, (0), 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 06:43:32,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:43:32,931 INFO L93 Difference]: Finished difference Result 38114 states and 46547 transitions. [2023-11-29 06:43:32,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 257 states. [2023-11-29 06:43:32,932 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 6.956521739130435) internal successors, (320), 46 states have internal predecessors, (320), 0 states have call successors, (0), 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 06:43:32,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:43:32,960 INFO L225 Difference]: With dead ends: 38114 [2023-11-29 06:43:32,960 INFO L226 Difference]: Without dead ends: 28829 [2023-11-29 06:43:32,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 299 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34604 ImplicationChecksByTransitivity, 60.7s TimeCoverageRelationStatistics Valid=10783, Invalid=79517, Unknown=0, NotChecked=0, Total=90300 [2023-11-29 06:43:32,971 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 31851 mSDsluCounter, 27062 mSDsCounter, 0 mSdLazyCounter, 4225 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31851 SdHoareTripleChecker+Valid, 28635 SdHoareTripleChecker+Invalid, 4458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 4225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-11-29 06:43:32,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31851 Valid, 28635 Invalid, 4458 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [233 Valid, 4225 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-11-29 06:43:32,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28829 states. [2023-11-29 06:43:35,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28829 to 20392. [2023-11-29 06:43:35,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20392 states, 20390 states have (on average 1.2285924472780776) internal successors, (25051), 20391 states have internal predecessors, (25051), 0 states have call successors, (0), 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 06:43:35,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20392 states to 20392 states and 25051 transitions. [2023-11-29 06:43:35,167 INFO L78 Accepts]: Start accepts. Automaton has 20392 states and 25051 transitions. Word has length 114 [2023-11-29 06:43:35,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:43:35,168 INFO L495 AbstractCegarLoop]: Abstraction has 20392 states and 25051 transitions. [2023-11-29 06:43:35,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 6.956521739130435) internal successors, (320), 46 states have internal predecessors, (320), 0 states have call successors, (0), 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 06:43:35,168 INFO L276 IsEmpty]: Start isEmpty. Operand 20392 states and 25051 transitions. [2023-11-29 06:43:35,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 06:43:35,172 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:43:35,172 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 06:43:35,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-29 06:43:35,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 06:43:35,373 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:43:35,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:43:35,373 INFO L85 PathProgramCache]: Analyzing trace with hash -751252595, now seen corresponding path program 1 times [2023-11-29 06:43:35,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:43:35,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529193442] [2023-11-29 06:43:35,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:43:35,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:43:35,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:37,913 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 13 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:43:37,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:43:37,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529193442] [2023-11-29 06:43:37,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529193442] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:43:37,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267075637] [2023-11-29 06:43:37,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:43:37,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:43:37,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:43:37,915 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:43:37,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 06:43:38,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:38,089 INFO L262 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 06:43:38,091 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:43:40,763 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 22 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:43:40,763 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:43:45,263 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 22 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:43:45,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267075637] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:43:45,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:43:45,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 18, 18] total 63 [2023-11-29 06:43:45,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037736600] [2023-11-29 06:43:45,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:43:45,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2023-11-29 06:43:45,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:43:45,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2023-11-29 06:43:45,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=3675, Unknown=0, NotChecked=0, Total=3906 [2023-11-29 06:43:45,266 INFO L87 Difference]: Start difference. First operand 20392 states and 25051 transitions. Second operand has 63 states, 63 states have (on average 5.190476190476191) internal successors, (327), 63 states have internal predecessors, (327), 0 states have call successors, (0), 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 06:46:36,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:46:36,565 INFO L93 Difference]: Finished difference Result 48341 states and 58075 transitions. [2023-11-29 06:46:36,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 399 states. [2023-11-29 06:46:36,565 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 5.190476190476191) internal successors, (327), 63 states have internal predecessors, (327), 0 states have call successors, (0), 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 06:46:36,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:46:36,595 INFO L225 Difference]: With dead ends: 48341 [2023-11-29 06:46:36,595 INFO L226 Difference]: Without dead ends: 42011 [2023-11-29 06:46:36,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 656 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 458 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84027 ImplicationChecksByTransitivity, 153.9s TimeCoverageRelationStatistics Valid=20781, Invalid=190359, Unknown=0, NotChecked=0, Total=211140 [2023-11-29 06:46:36,612 INFO L413 NwaCegarLoop]: 1757 mSDtfsCounter, 28829 mSDsluCounter, 49069 mSDsCounter, 0 mSdLazyCounter, 11802 mSolverCounterSat, 465 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28829 SdHoareTripleChecker+Valid, 50826 SdHoareTripleChecker+Invalid, 12267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 465 IncrementalHoareTripleChecker+Valid, 11802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2023-11-29 06:46:36,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28829 Valid, 50826 Invalid, 12267 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [465 Valid, 11802 Invalid, 0 Unknown, 0 Unchecked, 14.6s Time] [2023-11-29 06:46:36,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42011 states. [2023-11-29 06:46:39,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42011 to 24368. [2023-11-29 06:46:39,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24368 states, 24366 states have (on average 1.2157924977427563) internal successors, (29624), 24367 states have internal predecessors, (29624), 0 states have call successors, (0), 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 06:46:39,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24368 states to 24368 states and 29624 transitions. [2023-11-29 06:46:39,558 INFO L78 Accepts]: Start accepts. Automaton has 24368 states and 29624 transitions. Word has length 115 [2023-11-29 06:46:39,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:46:39,558 INFO L495 AbstractCegarLoop]: Abstraction has 24368 states and 29624 transitions. [2023-11-29 06:46:39,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 5.190476190476191) internal successors, (327), 63 states have internal predecessors, (327), 0 states have call successors, (0), 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 06:46:39,558 INFO L276 IsEmpty]: Start isEmpty. Operand 24368 states and 29624 transitions. [2023-11-29 06:46:39,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-29 06:46:39,561 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:46:39,561 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 06:46:39,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-29 06:46:39,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:46:39,763 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:46:39,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:46:39,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1699959909, now seen corresponding path program 1 times [2023-11-29 06:46:39,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:46:39,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027896909] [2023-11-29 06:46:39,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:39,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:46:39,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:40,891 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 41 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:46:40,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:46:40,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027896909] [2023-11-29 06:46:40,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027896909] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:46:40,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689523355] [2023-11-29 06:46:40,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:40,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:46:40,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:40,893 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:46:40,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05b7c187-3530-46d6-ab0d-e8cc3a52214e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 06:46:41,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:41,088 INFO L262 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 56 conjunts are in the unsatisfiable core [2023-11-29 06:46:41,091 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:46:46,117 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 22 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:46:46,117 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:46:59,407 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 22 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:46:59,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689523355] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:46:59,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:46:59,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 33, 31] total 81 [2023-11-29 06:46:59,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678347544] [2023-11-29 06:46:59,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:46:59,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2023-11-29 06:46:59,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:46:59,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2023-11-29 06:46:59,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=525, Invalid=5955, Unknown=0, NotChecked=0, Total=6480 [2023-11-29 06:46:59,410 INFO L87 Difference]: Start difference. First operand 24368 states and 29624 transitions. Second operand has 81 states, 81 states have (on average 4.0246913580246915) internal successors, (326), 81 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)