./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label00.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50bce67f-c145-4d4a-ba76-9809280070ab/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50bce67f-c145-4d4a-ba76-9809280070ab/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50bce67f-c145-4d4a-ba76-9809280070ab/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50bce67f-c145-4d4a-ba76-9809280070ab/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label00.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50bce67f-c145-4d4a-ba76-9809280070ab/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50bce67f-c145-4d4a-ba76-9809280070ab/bin/uautomizer-verify-uCwYo4JHxu --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 5f06498eb80e802eba7f35e8b89bda4b42e6ab2a6a5c4854a4d889d75d8cafdd --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:40:08,673 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:40:08,805 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50bce67f-c145-4d4a-ba76-9809280070ab/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:40:08,820 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:40:08,821 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:40:08,867 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:40:08,868 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:40:08,869 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:40:08,870 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:40:08,877 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:40:08,878 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:40:08,879 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:40:08,879 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:40:08,881 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:40:08,882 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:40:08,882 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:40:08,883 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:40:08,883 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:40:08,884 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:40:08,884 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:40:08,885 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:40:08,886 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:40:08,886 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:40:08,887 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:40:08,887 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:40:08,888 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:40:08,888 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:40:08,889 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:40:08,889 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:40:08,890 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:40:08,891 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:40:08,892 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:40:08,892 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:40:08,892 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:40:08,893 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:40:08,893 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:40:08,893 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:40:08,894 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:40:08,894 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:40:08,894 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_50bce67f-c145-4d4a-ba76-9809280070ab/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50bce67f-c145-4d4a-ba76-9809280070ab/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5f06498eb80e802eba7f35e8b89bda4b42e6ab2a6a5c4854a4d889d75d8cafdd [2023-11-19 07:40:09,246 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:40:09,282 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:40:09,285 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:40:09,287 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:40:09,288 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:40:09,289 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50bce67f-c145-4d4a-ba76-9809280070ab/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label00.c [2023-11-19 07:40:12,455 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:40:13,079 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:40:13,080 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50bce67f-c145-4d4a-ba76-9809280070ab/sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label00.c [2023-11-19 07:40:13,120 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50bce67f-c145-4d4a-ba76-9809280070ab/bin/uautomizer-verify-uCwYo4JHxu/data/2eadb1f3b/3a05c2a9df544b98b870e793f6c18aba/FLAG3d2b03252 [2023-11-19 07:40:13,142 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50bce67f-c145-4d4a-ba76-9809280070ab/bin/uautomizer-verify-uCwYo4JHxu/data/2eadb1f3b/3a05c2a9df544b98b870e793f6c18aba [2023-11-19 07:40:13,145 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:40:13,147 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:40:13,152 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:40:13,152 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:40:13,158 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:40:13,159 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:40:13" (1/1) ... [2023-11-19 07:40:13,160 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15accbc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:13, skipping insertion in model container [2023-11-19 07:40:13,161 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:40:13" (1/1) ... [2023-11-19 07:40:13,370 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:40:13,841 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_50bce67f-c145-4d4a-ba76-9809280070ab/sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label00.c[26888,26901] [2023-11-19 07:40:13,903 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_50bce67f-c145-4d4a-ba76-9809280070ab/sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label00.c[28763,28776] [2023-11-19 07:40:15,051 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:40:15,068 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:40:15,136 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_50bce67f-c145-4d4a-ba76-9809280070ab/sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label00.c[26888,26901] [2023-11-19 07:40:15,140 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_50bce67f-c145-4d4a-ba76-9809280070ab/sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label00.c[28763,28776] [2023-11-19 07:40:15,715 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:40:15,752 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:40:15,753 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:15 WrapperNode [2023-11-19 07:40:15,753 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:40:15,754 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:40:15,755 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:40:15,755 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:40:15,762 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:15" (1/1) ... [2023-11-19 07:40:15,830 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:15" (1/1) ... [2023-11-19 07:40:16,246 INFO L138 Inliner]: procedures = 40, calls = 25, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 5282 [2023-11-19 07:40:16,247 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:40:16,247 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:40:16,248 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:40:16,248 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:40:16,259 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:15" (1/1) ... [2023-11-19 07:40:16,260 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:15" (1/1) ... [2023-11-19 07:40:16,329 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:15" (1/1) ... [2023-11-19 07:40:16,329 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:15" (1/1) ... [2023-11-19 07:40:16,624 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:15" (1/1) ... [2023-11-19 07:40:16,648 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:15" (1/1) ... [2023-11-19 07:40:16,703 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:15" (1/1) ... [2023-11-19 07:40:16,717 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:15" (1/1) ... [2023-11-19 07:40:16,864 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:40:16,866 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:40:16,866 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:40:16,867 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:40:16,868 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:15" (1/1) ... [2023-11-19 07:40:16,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:40:16,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50bce67f-c145-4d4a-ba76-9809280070ab/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:16,921 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50bce67f-c145-4d4a-ba76-9809280070ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:40:16,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50bce67f-c145-4d4a-ba76-9809280070ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:40:17,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:40:17,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:40:17,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:40:17,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:40:17,382 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:40:17,401 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:40:22,840 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:40:22,863 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:40:22,863 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 07:40:22,877 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:40:22 BoogieIcfgContainer [2023-11-19 07:40:22,877 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:40:22,880 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:40:22,881 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:40:22,884 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:40:22,885 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:40:13" (1/3) ... [2023-11-19 07:40:22,885 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c1f9edc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:40:22, skipping insertion in model container [2023-11-19 07:40:22,886 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:15" (2/3) ... [2023-11-19 07:40:22,886 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c1f9edc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:40:22, skipping insertion in model container [2023-11-19 07:40:22,886 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:40:22" (3/3) ... [2023-11-19 07:40:22,888 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label00.c [2023-11-19 07:40:22,904 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:40:22,905 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 07:40:22,989 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:40:22,997 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;@6e5446b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:40:22,997 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 07:40:23,007 INFO L276 IsEmpty]: Start isEmpty. Operand has 949 states, 946 states have (on average 1.9027484143763214) internal successors, (1800), 948 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:23,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-19 07:40:23,014 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:23,015 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:23,015 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:23,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:23,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1702967051, now seen corresponding path program 1 times [2023-11-19 07:40:23,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:23,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847677179] [2023-11-19 07:40:23,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:23,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:23,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:23,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:23,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:23,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847677179] [2023-11-19 07:40:23,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847677179] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:23,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:23,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:40:23,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986892025] [2023-11-19 07:40:23,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:23,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:23,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:23,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:23,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:23,541 INFO L87 Difference]: Start difference. First operand has 949 states, 946 states have (on average 1.9027484143763214) internal successors, (1800), 948 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:28,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:28,399 INFO L93 Difference]: Finished difference Result 2584 states and 4970 transitions. [2023-11-19 07:40:28,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:28,402 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2023-11-19 07:40:28,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:28,430 INFO L225 Difference]: With dead ends: 2584 [2023-11-19 07:40:28,430 INFO L226 Difference]: Without dead ends: 1634 [2023-11-19 07:40:28,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:28,443 INFO L413 NwaCegarLoop]: 700 mSDtfsCounter, 1047 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2334 mSolverCounterSat, 651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1047 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 2985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 2334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:28,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1047 Valid, 711 Invalid, 2985 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [651 Valid, 2334 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-11-19 07:40:28,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1634 states. [2023-11-19 07:40:28,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1634 to 1634. [2023-11-19 07:40:28,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1634 states, 1632 states have (on average 1.650735294117647) internal successors, (2694), 1633 states have internal predecessors, (2694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:28,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 2694 transitions. [2023-11-19 07:40:28,570 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 2694 transitions. Word has length 16 [2023-11-19 07:40:28,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:28,571 INFO L495 AbstractCegarLoop]: Abstraction has 1634 states and 2694 transitions. [2023-11-19 07:40:28,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:28,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 2694 transitions. [2023-11-19 07:40:28,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-19 07:40:28,574 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:28,574 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:28,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:40:28,575 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:28,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:28,576 INFO L85 PathProgramCache]: Analyzing trace with hash -2101780621, now seen corresponding path program 1 times [2023-11-19 07:40:28,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:28,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889244987] [2023-11-19 07:40:28,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:28,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:28,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:28,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:28,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:28,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889244987] [2023-11-19 07:40:28,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889244987] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:28,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:28,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:40:28,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903273170] [2023-11-19 07:40:28,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:28,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:40:28,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:28,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:40:28,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:40:28,949 INFO L87 Difference]: Start difference. First operand 1634 states and 2694 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:29,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:29,113 INFO L93 Difference]: Finished difference Result 1700 states and 2798 transitions. [2023-11-19 07:40:29,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:40:29,115 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2023-11-19 07:40:29,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:29,127 INFO L225 Difference]: With dead ends: 1700 [2023-11-19 07:40:29,127 INFO L226 Difference]: Without dead ends: 1634 [2023-11-19 07:40:29,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:40:29,130 INFO L413 NwaCegarLoop]: 1665 mSDtfsCounter, 2 mSDsluCounter, 4929 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6594 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:29,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6594 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:40:29,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1634 states. [2023-11-19 07:40:29,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1634 to 1634. [2023-11-19 07:40:29,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1634 states, 1632 states have (on average 1.6133578431372548) internal successors, (2633), 1633 states have internal predecessors, (2633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:29,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 2633 transitions. [2023-11-19 07:40:29,185 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 2633 transitions. Word has length 30 [2023-11-19 07:40:29,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:29,186 INFO L495 AbstractCegarLoop]: Abstraction has 1634 states and 2633 transitions. [2023-11-19 07:40:29,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:29,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 2633 transitions. [2023-11-19 07:40:29,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-19 07:40:29,191 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:29,192 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:29,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:40:29,193 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:29,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:29,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1434939668, now seen corresponding path program 1 times [2023-11-19 07:40:29,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:29,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031703909] [2023-11-19 07:40:29,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:29,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:29,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:29,382 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:29,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:29,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031703909] [2023-11-19 07:40:29,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031703909] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:29,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:29,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:40:29,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694990164] [2023-11-19 07:40:29,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:29,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:29,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:29,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:29,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:29,387 INFO L87 Difference]: Start difference. First operand 1634 states and 2633 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:34,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:34,688 INFO L93 Difference]: Finished difference Result 4640 states and 7560 transitions. [2023-11-19 07:40:34,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:34,689 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2023-11-19 07:40:34,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:34,713 INFO L225 Difference]: With dead ends: 4640 [2023-11-19 07:40:34,714 INFO L226 Difference]: Without dead ends: 3136 [2023-11-19 07:40:34,717 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 [2023-11-19 07:40:34,719 INFO L413 NwaCegarLoop]: 1316 mSDtfsCounter, 753 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 2412 mSolverCounterSat, 681 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 1491 SdHoareTripleChecker+Invalid, 3093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 681 IncrementalHoareTripleChecker+Valid, 2412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:34,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [753 Valid, 1491 Invalid, 3093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [681 Valid, 2412 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-11-19 07:40:34,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3136 states. [2023-11-19 07:40:34,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3136 to 3136. [2023-11-19 07:40:34,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3136 states, 3134 states have (on average 1.5280791320995533) internal successors, (4789), 3135 states have internal predecessors, (4789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:34,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3136 states to 3136 states and 4789 transitions. [2023-11-19 07:40:34,813 INFO L78 Accepts]: Start accepts. Automaton has 3136 states and 4789 transitions. Word has length 87 [2023-11-19 07:40:34,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:34,814 INFO L495 AbstractCegarLoop]: Abstraction has 3136 states and 4789 transitions. [2023-11-19 07:40:34,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:34,815 INFO L276 IsEmpty]: Start isEmpty. Operand 3136 states and 4789 transitions. [2023-11-19 07:40:34,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-19 07:40:34,818 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:34,818 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:34,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:40:34,819 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:34,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:34,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1651582301, now seen corresponding path program 1 times [2023-11-19 07:40:34,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:34,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183529720] [2023-11-19 07:40:34,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:34,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:34,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:35,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:35,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:35,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183529720] [2023-11-19 07:40:35,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183529720] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:35,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:35,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-19 07:40:35,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176371232] [2023-11-19 07:40:35,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:35,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:40:35,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:35,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:40:35,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:40:35,339 INFO L87 Difference]: Start difference. First operand 3136 states and 4789 transitions. Second operand has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:36,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:36,255 INFO L93 Difference]: Finished difference Result 4128 states and 6389 transitions. [2023-11-19 07:40:36,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-19 07:40:36,256 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2023-11-19 07:40:36,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:36,290 INFO L225 Difference]: With dead ends: 4128 [2023-11-19 07:40:36,291 INFO L226 Difference]: Without dead ends: 4066 [2023-11-19 07:40:36,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2023-11-19 07:40:36,306 INFO L413 NwaCegarLoop]: 1600 mSDtfsCounter, 13578 mSDsluCounter, 3975 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13578 SdHoareTripleChecker+Valid, 5575 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:36,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13578 Valid, 5575 Invalid, 314 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:40:36,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4066 states. [2023-11-19 07:40:36,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4066 to 3196. [2023-11-19 07:40:36,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3196 states, 3194 states have (on average 1.5297432686286787) internal successors, (4886), 3195 states have internal predecessors, (4886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:36,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3196 states to 3196 states and 4886 transitions. [2023-11-19 07:40:36,454 INFO L78 Accepts]: Start accepts. Automaton has 3196 states and 4886 transitions. Word has length 90 [2023-11-19 07:40:36,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:36,457 INFO L495 AbstractCegarLoop]: Abstraction has 3196 states and 4886 transitions. [2023-11-19 07:40:36,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:36,458 INFO L276 IsEmpty]: Start isEmpty. Operand 3196 states and 4886 transitions. [2023-11-19 07:40:36,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-19 07:40:36,461 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:36,462 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:36,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:40:36,462 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:36,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:36,463 INFO L85 PathProgramCache]: Analyzing trace with hash 515371249, now seen corresponding path program 1 times [2023-11-19 07:40:36,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:36,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223687011] [2023-11-19 07:40:36,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:36,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:36,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:36,734 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:36,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:36,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223687011] [2023-11-19 07:40:36,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223687011] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:36,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:36,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:40:36,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510168300] [2023-11-19 07:40:36,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:36,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:36,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:36,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:36,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:36,738 INFO L87 Difference]: Start difference. First operand 3196 states and 4886 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:41,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:41,500 INFO L93 Difference]: Finished difference Result 9206 states and 14125 transitions. [2023-11-19 07:40:41,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:41,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2023-11-19 07:40:41,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:41,542 INFO L225 Difference]: With dead ends: 9206 [2023-11-19 07:40:41,542 INFO L226 Difference]: Without dead ends: 6200 [2023-11-19 07:40:41,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:41,548 INFO L413 NwaCegarLoop]: 608 mSDtfsCounter, 941 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1995 mSolverCounterSat, 935 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 2930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 935 IncrementalHoareTripleChecker+Valid, 1995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:41,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [941 Valid, 614 Invalid, 2930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [935 Valid, 1995 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-11-19 07:40:41,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6200 states. [2023-11-19 07:40:41,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6200 to 6200. [2023-11-19 07:40:41,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6200 states, 6198 states have (on average 1.3738302678283316) internal successors, (8515), 6199 states have internal predecessors, (8515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:41,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6200 states to 6200 states and 8515 transitions. [2023-11-19 07:40:41,709 INFO L78 Accepts]: Start accepts. Automaton has 6200 states and 8515 transitions. Word has length 90 [2023-11-19 07:40:41,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:41,710 INFO L495 AbstractCegarLoop]: Abstraction has 6200 states and 8515 transitions. [2023-11-19 07:40:41,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:41,710 INFO L276 IsEmpty]: Start isEmpty. Operand 6200 states and 8515 transitions. [2023-11-19 07:40:41,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-19 07:40:41,712 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:41,712 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:41,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:40:41,713 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:41,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:41,713 INFO L85 PathProgramCache]: Analyzing trace with hash 551619955, now seen corresponding path program 1 times [2023-11-19 07:40:41,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:41,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721523266] [2023-11-19 07:40:41,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:41,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:41,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:41,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:41,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:41,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721523266] [2023-11-19 07:40:41,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721523266] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:41,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:41,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:40:41,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078733072] [2023-11-19 07:40:41,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:41,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:41,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:41,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:41,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:41,930 INFO L87 Difference]: Start difference. First operand 6200 states and 8515 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:42,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:42,115 INFO L93 Difference]: Finished difference Result 6433 states and 8890 transitions. [2023-11-19 07:40:42,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:42,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2023-11-19 07:40:42,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:42,169 INFO L225 Difference]: With dead ends: 6433 [2023-11-19 07:40:42,169 INFO L226 Difference]: Without dead ends: 6311 [2023-11-19 07:40:42,172 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 [2023-11-19 07:40:42,176 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 1508 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1508 SdHoareTripleChecker+Valid, 1695 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:42,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1508 Valid, 1695 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:40:42,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6311 states. [2023-11-19 07:40:42,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6311 to 6307. [2023-11-19 07:40:42,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6307 states, 6305 states have (on average 1.3774781919111816) internal successors, (8685), 6306 states have internal predecessors, (8685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:42,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6307 states to 6307 states and 8685 transitions. [2023-11-19 07:40:42,361 INFO L78 Accepts]: Start accepts. Automaton has 6307 states and 8685 transitions. Word has length 92 [2023-11-19 07:40:42,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:42,361 INFO L495 AbstractCegarLoop]: Abstraction has 6307 states and 8685 transitions. [2023-11-19 07:40:42,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:42,370 INFO L276 IsEmpty]: Start isEmpty. Operand 6307 states and 8685 transitions. [2023-11-19 07:40:42,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-19 07:40:42,372 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:42,372 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:42,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:40:42,373 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:42,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:42,374 INFO L85 PathProgramCache]: Analyzing trace with hash 618113467, now seen corresponding path program 1 times [2023-11-19 07:40:42,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:42,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317508254] [2023-11-19 07:40:42,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:42,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:42,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:43,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:43,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:43,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317508254] [2023-11-19 07:40:43,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317508254] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:43,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:43,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-19 07:40:43,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265259850] [2023-11-19 07:40:43,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:43,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:40:43,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:43,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:40:43,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:40:43,264 INFO L87 Difference]: Start difference. First operand 6307 states and 8685 transitions. Second operand has 10 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:44,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:44,009 INFO L93 Difference]: Finished difference Result 6538 states and 9053 transitions. [2023-11-19 07:40:44,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:40:44,010 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2023-11-19 07:40:44,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:44,051 INFO L225 Difference]: With dead ends: 6538 [2023-11-19 07:40:44,051 INFO L226 Difference]: Without dead ends: 6309 [2023-11-19 07:40:44,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2023-11-19 07:40:44,056 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 9138 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9138 SdHoareTripleChecker+Valid, 2278 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:44,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9138 Valid, 2278 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:40:44,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6309 states. [2023-11-19 07:40:44,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6309 to 6307. [2023-11-19 07:40:44,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6307 states, 6305 states have (on average 1.3771609833465503) internal successors, (8683), 6306 states have internal predecessors, (8683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:44,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6307 states to 6307 states and 8683 transitions. [2023-11-19 07:40:44,275 INFO L78 Accepts]: Start accepts. Automaton has 6307 states and 8683 transitions. Word has length 92 [2023-11-19 07:40:44,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:44,276 INFO L495 AbstractCegarLoop]: Abstraction has 6307 states and 8683 transitions. [2023-11-19 07:40:44,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:44,277 INFO L276 IsEmpty]: Start isEmpty. Operand 6307 states and 8683 transitions. [2023-11-19 07:40:44,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-19 07:40:44,279 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:44,280 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:44,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:40:44,280 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:44,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:44,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1566925479, now seen corresponding path program 1 times [2023-11-19 07:40:44,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:44,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243540087] [2023-11-19 07:40:44,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:44,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:44,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:44,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:44,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:44,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243540087] [2023-11-19 07:40:44,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243540087] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:44,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:44,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:40:44,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113776409] [2023-11-19 07:40:44,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:44,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:40:44,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:44,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:40:44,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:40:44,768 INFO L87 Difference]: Start difference. First operand 6307 states and 8683 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:44,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:44,880 INFO L93 Difference]: Finished difference Result 6503 states and 8999 transitions. [2023-11-19 07:40:44,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:40:44,881 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-11-19 07:40:44,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:44,899 INFO L225 Difference]: With dead ends: 6503 [2023-11-19 07:40:44,899 INFO L226 Difference]: Without dead ends: 6501 [2023-11-19 07:40:44,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:40:44,903 INFO L413 NwaCegarLoop]: 1686 mSDtfsCounter, 88 mSDsluCounter, 4966 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 6652 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:44,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 6652 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:40:44,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6501 states. [2023-11-19 07:40:45,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6501 to 6313. [2023-11-19 07:40:45,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6313 states, 6311 states have (on average 1.3766439549992078) internal successors, (8688), 6312 states have internal predecessors, (8688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:45,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6313 states to 6313 states and 8688 transitions. [2023-11-19 07:40:45,160 INFO L78 Accepts]: Start accepts. Automaton has 6313 states and 8688 transitions. Word has length 93 [2023-11-19 07:40:45,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:45,160 INFO L495 AbstractCegarLoop]: Abstraction has 6313 states and 8688 transitions. [2023-11-19 07:40:45,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:45,161 INFO L276 IsEmpty]: Start isEmpty. Operand 6313 states and 8688 transitions. [2023-11-19 07:40:45,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-19 07:40:45,163 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:45,163 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:45,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:40:45,164 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:45,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:45,165 INFO L85 PathProgramCache]: Analyzing trace with hash -401487589, now seen corresponding path program 1 times [2023-11-19 07:40:45,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:45,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362517057] [2023-11-19 07:40:45,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:45,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:45,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:45,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:45,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:45,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362517057] [2023-11-19 07:40:45,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362517057] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:45,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:45,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:40:45,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17647488] [2023-11-19 07:40:45,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:45,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:45,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:45,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:45,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:45,304 INFO L87 Difference]: Start difference. First operand 6313 states and 8688 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:45,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:45,375 INFO L93 Difference]: Finished difference Result 6767 states and 9400 transitions. [2023-11-19 07:40:45,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:45,376 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-11-19 07:40:45,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:45,397 INFO L225 Difference]: With dead ends: 6767 [2023-11-19 07:40:45,398 INFO L226 Difference]: Without dead ends: 6532 [2023-11-19 07:40:45,401 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 [2023-11-19 07:40:45,404 INFO L413 NwaCegarLoop]: 1683 mSDtfsCounter, 1527 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1527 SdHoareTripleChecker+Valid, 1788 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:45,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1527 Valid, 1788 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:40:45,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6532 states. [2023-11-19 07:40:45,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6532 to 6530. [2023-11-19 07:40:45,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6530 states, 6528 states have (on average 1.3825061274509804) internal successors, (9025), 6529 states have internal predecessors, (9025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:45,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6530 states to 6530 states and 9025 transitions. [2023-11-19 07:40:45,572 INFO L78 Accepts]: Start accepts. Automaton has 6530 states and 9025 transitions. Word has length 94 [2023-11-19 07:40:45,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:45,573 INFO L495 AbstractCegarLoop]: Abstraction has 6530 states and 9025 transitions. [2023-11-19 07:40:45,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:45,574 INFO L276 IsEmpty]: Start isEmpty. Operand 6530 states and 9025 transitions. [2023-11-19 07:40:45,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-19 07:40:45,579 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:45,579 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:45,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:40:45,580 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:45,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:45,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1540581915, now seen corresponding path program 1 times [2023-11-19 07:40:45,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:45,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649731036] [2023-11-19 07:40:45,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:45,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:45,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:45,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:45,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:45,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649731036] [2023-11-19 07:40:45,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649731036] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:45,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:45,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:40:45,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897992513] [2023-11-19 07:40:45,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:45,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:45,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:45,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:45,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:45,759 INFO L87 Difference]: Start difference. First operand 6530 states and 9025 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:45,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:45,839 INFO L93 Difference]: Finished difference Result 7402 states and 10383 transitions. [2023-11-19 07:40:45,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:45,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-11-19 07:40:45,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:45,857 INFO L225 Difference]: With dead ends: 7402 [2023-11-19 07:40:45,857 INFO L226 Difference]: Without dead ends: 6950 [2023-11-19 07:40:45,860 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 [2023-11-19 07:40:45,861 INFO L413 NwaCegarLoop]: 1681 mSDtfsCounter, 1525 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1525 SdHoareTripleChecker+Valid, 1790 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:45,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1525 Valid, 1790 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:40:45,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6950 states. [2023-11-19 07:40:46,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6950 to 6948. [2023-11-19 07:40:46,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6948 states, 6946 states have (on average 1.3917362510797582) internal successors, (9667), 6947 states have internal predecessors, (9667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:46,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6948 states to 6948 states and 9667 transitions. [2023-11-19 07:40:46,046 INFO L78 Accepts]: Start accepts. Automaton has 6948 states and 9667 transitions. Word has length 94 [2023-11-19 07:40:46,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:46,047 INFO L495 AbstractCegarLoop]: Abstraction has 6948 states and 9667 transitions. [2023-11-19 07:40:46,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:46,048 INFO L276 IsEmpty]: Start isEmpty. Operand 6948 states and 9667 transitions. [2023-11-19 07:40:46,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-19 07:40:46,050 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:46,050 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:46,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:40:46,051 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:46,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:46,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1967352859, now seen corresponding path program 1 times [2023-11-19 07:40:46,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:46,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754404770] [2023-11-19 07:40:46,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:46,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:46,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:46,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:46,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:46,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754404770] [2023-11-19 07:40:46,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754404770] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:46,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:46,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:40:46,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005053898] [2023-11-19 07:40:46,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:46,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:46,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:46,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:46,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:46,208 INFO L87 Difference]: Start difference. First operand 6948 states and 9667 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:46,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:46,314 INFO L93 Difference]: Finished difference Result 8624 states and 12253 transitions. [2023-11-19 07:40:46,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:46,314 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-11-19 07:40:46,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:46,333 INFO L225 Difference]: With dead ends: 8624 [2023-11-19 07:40:46,334 INFO L226 Difference]: Without dead ends: 7754 [2023-11-19 07:40:46,338 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 [2023-11-19 07:40:46,339 INFO L413 NwaCegarLoop]: 1669 mSDtfsCounter, 1521 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 1786 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:46,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1521 Valid, 1786 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:40:46,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7754 states. [2023-11-19 07:40:46,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7754 to 7752. [2023-11-19 07:40:46,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7752 states, 7750 states have (on average 1.404774193548387) internal successors, (10887), 7751 states have internal predecessors, (10887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:46,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7752 states to 7752 states and 10887 transitions. [2023-11-19 07:40:46,547 INFO L78 Accepts]: Start accepts. Automaton has 7752 states and 10887 transitions. Word has length 94 [2023-11-19 07:40:46,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:46,548 INFO L495 AbstractCegarLoop]: Abstraction has 7752 states and 10887 transitions. [2023-11-19 07:40:46,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:46,548 INFO L276 IsEmpty]: Start isEmpty. Operand 7752 states and 10887 transitions. [2023-11-19 07:40:46,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-19 07:40:46,550 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:46,551 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:46,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:40:46,551 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:46,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:46,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1089352421, now seen corresponding path program 1 times [2023-11-19 07:40:46,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:46,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142005424] [2023-11-19 07:40:46,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:46,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:46,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:46,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:46,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:46,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142005424] [2023-11-19 07:40:46,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142005424] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:46,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:46,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:40:46,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947499143] [2023-11-19 07:40:46,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:46,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:46,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:46,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:46,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:46,679 INFO L87 Difference]: Start difference. First operand 7752 states and 10887 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:46,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:46,833 INFO L93 Difference]: Finished difference Result 10972 states and 15801 transitions. [2023-11-19 07:40:46,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:46,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-11-19 07:40:46,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:46,857 INFO L225 Difference]: With dead ends: 10972 [2023-11-19 07:40:46,857 INFO L226 Difference]: Without dead ends: 9298 [2023-11-19 07:40:46,862 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 [2023-11-19 07:40:46,863 INFO L413 NwaCegarLoop]: 1667 mSDtfsCounter, 1519 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1519 SdHoareTripleChecker+Valid, 1788 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:46,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1519 Valid, 1788 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:40:46,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9298 states. [2023-11-19 07:40:47,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9298 to 9296. [2023-11-19 07:40:47,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9296 states, 9294 states have (on average 1.4201635463740048) internal successors, (13199), 9295 states have internal predecessors, (13199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:47,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9296 states to 9296 states and 13199 transitions. [2023-11-19 07:40:47,300 INFO L78 Accepts]: Start accepts. Automaton has 9296 states and 13199 transitions. Word has length 94 [2023-11-19 07:40:47,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:47,301 INFO L495 AbstractCegarLoop]: Abstraction has 9296 states and 13199 transitions. [2023-11-19 07:40:47,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:47,302 INFO L276 IsEmpty]: Start isEmpty. Operand 9296 states and 13199 transitions. [2023-11-19 07:40:47,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-19 07:40:47,304 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:47,305 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:47,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:40:47,306 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:47,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:47,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1523888357, now seen corresponding path program 1 times [2023-11-19 07:40:47,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:47,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719493743] [2023-11-19 07:40:47,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:47,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:47,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:47,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:47,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:47,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719493743] [2023-11-19 07:40:47,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719493743] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:47,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:47,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:40:47,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360798280] [2023-11-19 07:40:47,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:47,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:47,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:47,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:47,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:47,460 INFO L87 Difference]: Start difference. First operand 9296 states and 13199 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:47,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:47,800 INFO L93 Difference]: Finished difference Result 15476 states and 22513 transitions. [2023-11-19 07:40:47,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:47,801 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-11-19 07:40:47,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:47,835 INFO L225 Difference]: With dead ends: 15476 [2023-11-19 07:40:47,836 INFO L226 Difference]: Without dead ends: 12258 [2023-11-19 07:40:47,845 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 [2023-11-19 07:40:47,846 INFO L413 NwaCegarLoop]: 1655 mSDtfsCounter, 1515 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1515 SdHoareTripleChecker+Valid, 1784 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:47,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1515 Valid, 1784 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:40:47,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12258 states. [2023-11-19 07:40:48,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12258 to 12256. [2023-11-19 07:40:48,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12256 states, 12254 states have (on average 1.433572710951526) internal successors, (17567), 12255 states have internal predecessors, (17567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:48,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12256 states to 12256 states and 17567 transitions. [2023-11-19 07:40:48,349 INFO L78 Accepts]: Start accepts. Automaton has 12256 states and 17567 transitions. Word has length 94 [2023-11-19 07:40:48,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:48,349 INFO L495 AbstractCegarLoop]: Abstraction has 12256 states and 17567 transitions. [2023-11-19 07:40:48,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:48,350 INFO L276 IsEmpty]: Start isEmpty. Operand 12256 states and 17567 transitions. [2023-11-19 07:40:48,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-19 07:40:48,352 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:48,352 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:48,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 07:40:48,353 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:48,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:48,354 INFO L85 PathProgramCache]: Analyzing trace with hash 990146075, now seen corresponding path program 1 times [2023-11-19 07:40:48,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:48,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269780387] [2023-11-19 07:40:48,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:48,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:48,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:48,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:48,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:48,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269780387] [2023-11-19 07:40:48,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269780387] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:48,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:48,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:40:48,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043628364] [2023-11-19 07:40:48,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:48,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:48,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:48,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:48,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:48,488 INFO L87 Difference]: Start difference. First operand 12256 states and 17567 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:48,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:48,945 INFO L93 Difference]: Finished difference Result 24100 states and 35169 transitions. [2023-11-19 07:40:48,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:48,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-11-19 07:40:48,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:48,993 INFO L225 Difference]: With dead ends: 24100 [2023-11-19 07:40:48,994 INFO L226 Difference]: Without dead ends: 17922 [2023-11-19 07:40:49,010 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 [2023-11-19 07:40:49,012 INFO L413 NwaCegarLoop]: 1665 mSDtfsCounter, 1517 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1517 SdHoareTripleChecker+Valid, 1790 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:49,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1517 Valid, 1790 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:40:49,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17922 states. [2023-11-19 07:40:49,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17922 to 17920. [2023-11-19 07:40:49,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17920 states, 17918 states have (on average 1.439390556981806) internal successors, (25791), 17919 states have internal predecessors, (25791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:49,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17920 states to 17920 states and 25791 transitions. [2023-11-19 07:40:49,793 INFO L78 Accepts]: Start accepts. Automaton has 17920 states and 25791 transitions. Word has length 94 [2023-11-19 07:40:49,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:49,793 INFO L495 AbstractCegarLoop]: Abstraction has 17920 states and 25791 transitions. [2023-11-19 07:40:49,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:49,794 INFO L276 IsEmpty]: Start isEmpty. Operand 17920 states and 25791 transitions. [2023-11-19 07:40:49,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-19 07:40:49,796 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:49,796 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:49,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 07:40:49,797 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:49,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:49,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1703496475, now seen corresponding path program 1 times [2023-11-19 07:40:49,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:49,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586132420] [2023-11-19 07:40:49,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:49,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:49,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:49,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:49,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:49,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586132420] [2023-11-19 07:40:49,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586132420] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:49,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:49,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:40:49,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534518685] [2023-11-19 07:40:49,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:49,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:49,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:49,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:49,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:49,932 INFO L87 Difference]: Start difference. First operand 17920 states and 25791 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:50,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:50,748 INFO L93 Difference]: Finished difference Result 40580 states and 58945 transitions. [2023-11-19 07:40:50,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:50,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-11-19 07:40:50,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:50,826 INFO L225 Difference]: With dead ends: 40580 [2023-11-19 07:40:50,826 INFO L226 Difference]: Without dead ends: 28738 [2023-11-19 07:40:50,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:50,848 INFO L413 NwaCegarLoop]: 1679 mSDtfsCounter, 1523 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1523 SdHoareTripleChecker+Valid, 1792 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:50,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1523 Valid, 1792 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:40:50,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28738 states. [2023-11-19 07:40:52,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28738 to 28736. [2023-11-19 07:40:52,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28736 states, 28734 states have (on average 1.4343634718452007) internal successors, (41215), 28735 states have internal predecessors, (41215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:52,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28736 states to 28736 states and 41215 transitions. [2023-11-19 07:40:52,193 INFO L78 Accepts]: Start accepts. Automaton has 28736 states and 41215 transitions. Word has length 94 [2023-11-19 07:40:52,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:52,193 INFO L495 AbstractCegarLoop]: Abstraction has 28736 states and 41215 transitions. [2023-11-19 07:40:52,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:52,194 INFO L276 IsEmpty]: Start isEmpty. Operand 28736 states and 41215 transitions. [2023-11-19 07:40:52,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-19 07:40:52,195 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:52,196 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:52,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-19 07:40:52,196 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:52,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:52,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1087415530, now seen corresponding path program 1 times [2023-11-19 07:40:52,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:52,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463965370] [2023-11-19 07:40:52,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:52,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:52,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:52,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:52,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:52,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463965370] [2023-11-19 07:40:52,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463965370] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:52,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:52,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:40:52,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270484801] [2023-11-19 07:40:52,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:52,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:52,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:52,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:52,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:52,343 INFO L87 Difference]: Start difference. First operand 28736 states and 41215 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:53,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:53,664 INFO L93 Difference]: Finished difference Result 52295 states and 75781 transitions. [2023-11-19 07:40:53,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:53,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2023-11-19 07:40:53,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:53,749 INFO L225 Difference]: With dead ends: 52295 [2023-11-19 07:40:53,750 INFO L226 Difference]: Without dead ends: 39748 [2023-11-19 07:40:53,772 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 [2023-11-19 07:40:53,773 INFO L413 NwaCegarLoop]: 1688 mSDtfsCounter, 1526 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1526 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:53,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1526 Valid, 1789 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:40:53,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39748 states.