./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_952fe3fa-c87f-44c9-a2f9-102e2b4f39c5/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_952fe3fa-c87f-44c9-a2f9-102e2b4f39c5/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_952fe3fa-c87f-44c9-a2f9-102e2b4f39c5/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_952fe3fa-c87f-44c9-a2f9-102e2b4f39c5/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_952fe3fa-c87f-44c9-a2f9-102e2b4f39c5/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_952fe3fa-c87f-44c9-a2f9-102e2b4f39c5/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b8f220cadba131cee309fef082c623cdd627c534b9e708cc4a4f1dd2aa7336b9 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:55:32,759 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:55:32,822 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_952fe3fa-c87f-44c9-a2f9-102e2b4f39c5/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 01:55:32,826 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:55:32,826 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:55:32,851 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:55:32,851 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:55:32,852 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:55:32,852 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:55:32,853 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:55:32,853 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:55:32,854 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:55:32,855 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:55:32,855 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:55:32,856 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:55:32,856 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:55:32,857 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:55:32,857 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:55:32,858 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:55:32,858 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:55:32,859 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:55:32,859 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:55:32,860 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:55:32,860 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:55:32,861 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:55:32,861 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:55:32,862 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:55:32,862 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:55:32,863 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:55:32,863 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:55:32,863 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:55:32,864 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:55:32,864 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:55:32,864 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:55:32,865 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:55:32,865 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:55:32,865 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:55:32,865 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:55:32,865 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:55:32,865 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:55:32,866 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:55:32,866 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:55:32,866 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_952fe3fa-c87f-44c9-a2f9-102e2b4f39c5/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_952fe3fa-c87f-44c9-a2f9-102e2b4f39c5/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8f220cadba131cee309fef082c623cdd627c534b9e708cc4a4f1dd2aa7336b9 [2023-11-29 01:55:33,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:55:33,109 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:55:33,111 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:55:33,113 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:55:33,113 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:55:33,114 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_952fe3fa-c87f-44c9-a2f9-102e2b4f39c5/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2023-11-29 01:55:35,846 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:55:36,047 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:55:36,048 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_952fe3fa-c87f-44c9-a2f9-102e2b4f39c5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2023-11-29 01:55:36,057 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_952fe3fa-c87f-44c9-a2f9-102e2b4f39c5/bin/uautomizer-verify-BQ2R08f2Ya/data/f14dad9c8/97ba465618874591af9a1467592eb41e/FLAGda49cc3de [2023-11-29 01:55:36,067 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_952fe3fa-c87f-44c9-a2f9-102e2b4f39c5/bin/uautomizer-verify-BQ2R08f2Ya/data/f14dad9c8/97ba465618874591af9a1467592eb41e [2023-11-29 01:55:36,069 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:55:36,070 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:55:36,071 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:55:36,072 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:55:36,076 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:55:36,077 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:55:36" (1/1) ... [2023-11-29 01:55:36,078 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2374102e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:55:36, skipping insertion in model container [2023-11-29 01:55:36,078 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:55:36" (1/1) ... [2023-11-29 01:55:36,126 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:55:36,302 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_952fe3fa-c87f-44c9-a2f9-102e2b4f39c5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[6322,6335] [2023-11-29 01:55:36,338 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:55:36,352 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:55:36,401 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_952fe3fa-c87f-44c9-a2f9-102e2b4f39c5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[6322,6335] [2023-11-29 01:55:36,423 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:55:36,441 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:55:36,441 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:55:36 WrapperNode [2023-11-29 01:55:36,442 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:55:36,443 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:55:36,443 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:55:36,443 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:55:36,451 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:55:36" (1/1) ... [2023-11-29 01:55:36,463 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:55:36" (1/1) ... [2023-11-29 01:55:36,493 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 554 [2023-11-29 01:55:36,493 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:55:36,494 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:55:36,494 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:55:36,494 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:55:36,505 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:55:36" (1/1) ... [2023-11-29 01:55:36,505 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:55:36" (1/1) ... [2023-11-29 01:55:36,509 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:55:36" (1/1) ... [2023-11-29 01:55:36,527 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 01:55:36,527 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:55:36" (1/1) ... [2023-11-29 01:55:36,527 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:55:36" (1/1) ... [2023-11-29 01:55:36,538 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:55:36" (1/1) ... [2023-11-29 01:55:36,544 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:55:36" (1/1) ... [2023-11-29 01:55:36,546 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:55:36" (1/1) ... [2023-11-29 01:55:36,549 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:55:36" (1/1) ... [2023-11-29 01:55:36,554 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:55:36,555 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:55:36,555 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:55:36,555 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:55:36,556 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:55:36" (1/1) ... [2023-11-29 01:55:36,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:55:36,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_952fe3fa-c87f-44c9-a2f9-102e2b4f39c5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:55:36,589 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_952fe3fa-c87f-44c9-a2f9-102e2b4f39c5/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:55:36,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_952fe3fa-c87f-44c9-a2f9-102e2b4f39c5/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:55:36,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:55:36,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:55:36,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:55:36,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:55:36,748 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:55:36,751 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:55:37,180 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:55:37,217 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:55:37,217 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 01:55:37,218 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:55:37 BoogieIcfgContainer [2023-11-29 01:55:37,218 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:55:37,221 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:55:37,221 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:55:37,224 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:55:37,224 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:55:36" (1/3) ... [2023-11-29 01:55:37,225 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d934023 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:55:37, skipping insertion in model container [2023-11-29 01:55:37,225 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:55:36" (2/3) ... [2023-11-29 01:55:37,225 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d934023 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:55:37, skipping insertion in model container [2023-11-29 01:55:37,226 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:55:37" (3/3) ... [2023-11-29 01:55:37,227 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2023-11-29 01:55:37,246 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:55:37,246 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 01:55:37,307 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:55:37,312 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;@5e22e47a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:55:37,313 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 01:55:37,317 INFO L276 IsEmpty]: Start isEmpty. Operand has 129 states, 127 states have (on average 1.7165354330708662) internal successors, (218), 128 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:37,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-29 01:55:37,338 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:55:37,338 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:55:37,339 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:55:37,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:55:37,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1636820329, now seen corresponding path program 1 times [2023-11-29 01:55:37,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:55:37,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099073686] [2023-11-29 01:55:37,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:37,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:55:37,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:37,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:55:37,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:55:37,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099073686] [2023-11-29 01:55:37,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099073686] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:55:37,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:55:37,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:55:37,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103780551] [2023-11-29 01:55:37,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:55:37,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:55:37,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:55:37,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:55:37,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:55:37,734 INFO L87 Difference]: Start difference. First operand has 129 states, 127 states have (on average 1.7165354330708662) internal successors, (218), 128 states have internal predecessors, (218), 0 states have call successors, (0), 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 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:37,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:55:37,797 INFO L93 Difference]: Finished difference Result 303 states and 494 transitions. [2023-11-29 01:55:37,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:55:37,800 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2023-11-29 01:55:37,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:55:37,811 INFO L225 Difference]: With dead ends: 303 [2023-11-29 01:55:37,811 INFO L226 Difference]: Without dead ends: 204 [2023-11-29 01:55:37,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:55:37,818 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 157 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:55:37,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 459 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:55:37,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-11-29 01:55:37,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 202. [2023-11-29 01:55:37,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 1.5024875621890548) internal successors, (302), 201 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:37,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 302 transitions. [2023-11-29 01:55:37,866 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 302 transitions. Word has length 59 [2023-11-29 01:55:37,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:55:37,867 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 302 transitions. [2023-11-29 01:55:37,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:37,868 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 302 transitions. [2023-11-29 01:55:37,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-29 01:55:37,870 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:55:37,871 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] [2023-11-29 01:55:37,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 01:55:37,871 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:55:37,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:55:37,872 INFO L85 PathProgramCache]: Analyzing trace with hash 193831411, now seen corresponding path program 1 times [2023-11-29 01:55:37,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:55:37,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749116108] [2023-11-29 01:55:37,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:37,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:55:37,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:37,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:55:37,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:55:37,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749116108] [2023-11-29 01:55:37,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749116108] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:55:37,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:55:37,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:55:37,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467437969] [2023-11-29 01:55:37,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:55:37,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:55:37,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:55:37,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:55:37,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:55:37,992 INFO L87 Difference]: Start difference. First operand 202 states and 302 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:38,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:55:38,021 INFO L93 Difference]: Finished difference Result 506 states and 786 transitions. [2023-11-29 01:55:38,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:55:38,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-11-29 01:55:38,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:55:38,025 INFO L225 Difference]: With dead ends: 506 [2023-11-29 01:55:38,025 INFO L226 Difference]: Without dead ends: 338 [2023-11-29 01:55:38,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:55:38,028 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 127 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:55:38,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 400 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:55:38,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2023-11-29 01:55:38,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 336. [2023-11-29 01:55:38,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 335 states have (on average 1.537313432835821) internal successors, (515), 335 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:38,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 515 transitions. [2023-11-29 01:55:38,055 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 515 transitions. Word has length 60 [2023-11-29 01:55:38,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:55:38,055 INFO L495 AbstractCegarLoop]: Abstraction has 336 states and 515 transitions. [2023-11-29 01:55:38,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:38,056 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 515 transitions. [2023-11-29 01:55:38,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-29 01:55:38,057 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:55:38,058 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] [2023-11-29 01:55:38,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 01:55:38,058 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:55:38,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:55:38,059 INFO L85 PathProgramCache]: Analyzing trace with hash -925933732, now seen corresponding path program 1 times [2023-11-29 01:55:38,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:55:38,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822555479] [2023-11-29 01:55:38,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:38,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:55:38,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:38,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:55:38,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:55:38,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822555479] [2023-11-29 01:55:38,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822555479] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:55:38,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:55:38,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:55:38,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188476215] [2023-11-29 01:55:38,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:55:38,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:55:38,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:55:38,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:55:38,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:55:38,147 INFO L87 Difference]: Start difference. First operand 336 states and 515 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:38,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:55:38,169 INFO L93 Difference]: Finished difference Result 876 states and 1373 transitions. [2023-11-29 01:55:38,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:55:38,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-11-29 01:55:38,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:55:38,173 INFO L225 Difference]: With dead ends: 876 [2023-11-29 01:55:38,173 INFO L226 Difference]: Without dead ends: 574 [2023-11-29 01:55:38,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:55:38,176 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 122 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:55:38,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 385 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:55:38,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2023-11-29 01:55:38,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 572. [2023-11-29 01:55:38,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 571 states have (on average 1.553415061295972) internal successors, (887), 571 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:38,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 887 transitions. [2023-11-29 01:55:38,200 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 887 transitions. Word has length 61 [2023-11-29 01:55:38,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:55:38,201 INFO L495 AbstractCegarLoop]: Abstraction has 572 states and 887 transitions. [2023-11-29 01:55:38,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:38,201 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 887 transitions. [2023-11-29 01:55:38,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-29 01:55:38,203 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:55:38,203 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] [2023-11-29 01:55:38,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 01:55:38,203 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:55:38,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:55:38,204 INFO L85 PathProgramCache]: Analyzing trace with hash -320763344, now seen corresponding path program 1 times [2023-11-29 01:55:38,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:55:38,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724161044] [2023-11-29 01:55:38,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:38,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:55:38,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:38,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:55:38,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:55:38,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724161044] [2023-11-29 01:55:38,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724161044] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:55:38,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:55:38,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:55:38,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821468128] [2023-11-29 01:55:38,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:55:38,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:55:38,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:55:38,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:55:38,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:55:38,295 INFO L87 Difference]: Start difference. First operand 572 states and 887 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:38,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:55:38,321 INFO L93 Difference]: Finished difference Result 1520 states and 2385 transitions. [2023-11-29 01:55:38,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:55:38,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-11-29 01:55:38,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:55:38,328 INFO L225 Difference]: With dead ends: 1520 [2023-11-29 01:55:38,328 INFO L226 Difference]: Without dead ends: 982 [2023-11-29 01:55:38,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:55:38,331 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 117 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:55:38,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 370 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:55:38,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2023-11-29 01:55:38,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 980. [2023-11-29 01:55:38,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 980 states, 979 states have (on average 1.5556690500510726) internal successors, (1523), 979 states have internal predecessors, (1523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:38,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 980 states to 980 states and 1523 transitions. [2023-11-29 01:55:38,361 INFO L78 Accepts]: Start accepts. Automaton has 980 states and 1523 transitions. Word has length 62 [2023-11-29 01:55:38,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:55:38,361 INFO L495 AbstractCegarLoop]: Abstraction has 980 states and 1523 transitions. [2023-11-29 01:55:38,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:38,362 INFO L276 IsEmpty]: Start isEmpty. Operand 980 states and 1523 transitions. [2023-11-29 01:55:38,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-29 01:55:38,363 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:55:38,363 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] [2023-11-29 01:55:38,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 01:55:38,364 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:55:38,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:55:38,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1594093213, now seen corresponding path program 1 times [2023-11-29 01:55:38,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:55:38,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304384174] [2023-11-29 01:55:38,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:38,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:55:38,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:38,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:55:38,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:55:38,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304384174] [2023-11-29 01:55:38,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304384174] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:55:38,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:55:38,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:55:38,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209097465] [2023-11-29 01:55:38,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:55:38,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:55:38,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:55:38,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:55:38,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:55:38,530 INFO L87 Difference]: Start difference. First operand 980 states and 1523 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:38,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:55:38,757 INFO L93 Difference]: Finished difference Result 6656 states and 10457 transitions. [2023-11-29 01:55:38,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:55:38,758 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-11-29 01:55:38,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:55:38,790 INFO L225 Difference]: With dead ends: 6656 [2023-11-29 01:55:38,791 INFO L226 Difference]: Without dead ends: 5710 [2023-11-29 01:55:38,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:55:38,794 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 1940 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1940 SdHoareTripleChecker+Valid, 1659 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:55:38,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1940 Valid, 1659 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:55:38,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5710 states. [2023-11-29 01:55:38,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5710 to 1924. [2023-11-29 01:55:38,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1924 states, 1923 states have (on average 1.5491419656786272) internal successors, (2979), 1923 states have internal predecessors, (2979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:38,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1924 states to 1924 states and 2979 transitions. [2023-11-29 01:55:38,909 INFO L78 Accepts]: Start accepts. Automaton has 1924 states and 2979 transitions. Word has length 63 [2023-11-29 01:55:38,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:55:38,910 INFO L495 AbstractCegarLoop]: Abstraction has 1924 states and 2979 transitions. [2023-11-29 01:55:38,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:38,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1924 states and 2979 transitions. [2023-11-29 01:55:38,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-29 01:55:38,911 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:55:38,912 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] [2023-11-29 01:55:38,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 01:55:38,912 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:55:38,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:55:38,913 INFO L85 PathProgramCache]: Analyzing trace with hash 2103261709, now seen corresponding path program 1 times [2023-11-29 01:55:38,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:55:38,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627623797] [2023-11-29 01:55:38,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:38,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:55:38,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:39,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:55:39,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:55:39,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627623797] [2023-11-29 01:55:39,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627623797] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:55:39,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:55:39,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:55:39,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622431373] [2023-11-29 01:55:39,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:55:39,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:55:39,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:55:39,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:55:39,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:55:39,130 INFO L87 Difference]: Start difference. First operand 1924 states and 2979 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:39,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:55:39,302 INFO L93 Difference]: Finished difference Result 10094 states and 15592 transitions. [2023-11-29 01:55:39,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:55:39,302 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-11-29 01:55:39,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:55:39,336 INFO L225 Difference]: With dead ends: 10094 [2023-11-29 01:55:39,336 INFO L226 Difference]: Without dead ends: 8204 [2023-11-29 01:55:39,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:55:39,341 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 687 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 1111 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:55:39,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [687 Valid, 1111 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:55:39,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8204 states. [2023-11-29 01:55:39,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8204 to 8196. [2023-11-29 01:55:39,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8196 states, 8195 states have (on average 1.5388651616839537) internal successors, (12611), 8195 states have internal predecessors, (12611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:39,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8196 states to 8196 states and 12611 transitions. [2023-11-29 01:55:39,507 INFO L78 Accepts]: Start accepts. Automaton has 8196 states and 12611 transitions. Word has length 64 [2023-11-29 01:55:39,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:55:39,508 INFO L495 AbstractCegarLoop]: Abstraction has 8196 states and 12611 transitions. [2023-11-29 01:55:39,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:39,508 INFO L276 IsEmpty]: Start isEmpty. Operand 8196 states and 12611 transitions. [2023-11-29 01:55:39,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-29 01:55:39,509 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:55:39,510 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] [2023-11-29 01:55:39,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 01:55:39,510 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:55:39,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:55:39,511 INFO L85 PathProgramCache]: Analyzing trace with hash -822403850, now seen corresponding path program 1 times [2023-11-29 01:55:39,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:55:39,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442029335] [2023-11-29 01:55:39,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:39,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:55:39,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:39,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:55:39,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:55:39,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442029335] [2023-11-29 01:55:39,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442029335] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:55:39,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:55:39,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:55:39,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355713381] [2023-11-29 01:55:39,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:55:39,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:55:39,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:55:39,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:55:39,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:55:39,566 INFO L87 Difference]: Start difference. First operand 8196 states and 12611 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:39,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:55:39,658 INFO L93 Difference]: Finished difference Result 22760 states and 34885 transitions. [2023-11-29 01:55:39,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:55:39,659 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-11-29 01:55:39,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:55:39,709 INFO L225 Difference]: With dead ends: 22760 [2023-11-29 01:55:39,709 INFO L226 Difference]: Without dead ends: 14598 [2023-11-29 01:55:39,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:55:39,719 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 136 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:55:39,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 448 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:55:39,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14598 states. [2023-11-29 01:55:40,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14598 to 14596. [2023-11-29 01:55:40,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14596 states, 14595 states have (on average 1.5174374785885578) internal successors, (22147), 14595 states have internal predecessors, (22147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:40,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14596 states to 14596 states and 22147 transitions. [2023-11-29 01:55:40,122 INFO L78 Accepts]: Start accepts. Automaton has 14596 states and 22147 transitions. Word has length 64 [2023-11-29 01:55:40,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:55:40,122 INFO L495 AbstractCegarLoop]: Abstraction has 14596 states and 22147 transitions. [2023-11-29 01:55:40,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:40,123 INFO L276 IsEmpty]: Start isEmpty. Operand 14596 states and 22147 transitions. [2023-11-29 01:55:40,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-29 01:55:40,124 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:55:40,124 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] [2023-11-29 01:55:40,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 01:55:40,124 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:55:40,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:55:40,125 INFO L85 PathProgramCache]: Analyzing trace with hash 889715588, now seen corresponding path program 1 times [2023-11-29 01:55:40,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:55:40,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189008714] [2023-11-29 01:55:40,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:40,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:55:40,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:40,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:55:40,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:55:40,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189008714] [2023-11-29 01:55:40,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189008714] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:55:40,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:55:40,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:55:40,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054567767] [2023-11-29 01:55:40,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:55:40,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:55:40,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:55:40,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:55:40,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:55:40,295 INFO L87 Difference]: Start difference. First operand 14596 states and 22147 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:40,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:55:40,670 INFO L93 Difference]: Finished difference Result 43720 states and 66373 transitions. [2023-11-29 01:55:40,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:55:40,671 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-11-29 01:55:40,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:55:40,714 INFO L225 Difference]: With dead ends: 43720 [2023-11-29 01:55:40,714 INFO L226 Difference]: Without dead ends: 29158 [2023-11-29 01:55:40,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:55:40,728 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 777 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 777 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:55:40,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [777 Valid, 210 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:55:40,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29158 states. [2023-11-29 01:55:41,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29158 to 29156. [2023-11-29 01:55:41,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29156 states, 29155 states have (on average 1.509277996913051) internal successors, (44003), 29155 states have internal predecessors, (44003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:41,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29156 states to 29156 states and 44003 transitions. [2023-11-29 01:55:41,323 INFO L78 Accepts]: Start accepts. Automaton has 29156 states and 44003 transitions. Word has length 66 [2023-11-29 01:55:41,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:55:41,324 INFO L495 AbstractCegarLoop]: Abstraction has 29156 states and 44003 transitions. [2023-11-29 01:55:41,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:41,324 INFO L276 IsEmpty]: Start isEmpty. Operand 29156 states and 44003 transitions. [2023-11-29 01:55:41,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-29 01:55:41,326 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:55:41,326 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] [2023-11-29 01:55:41,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 01:55:41,326 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:55:41,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:55:41,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1635280001, now seen corresponding path program 1 times [2023-11-29 01:55:41,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:55:41,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325890678] [2023-11-29 01:55:41,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:41,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:55:41,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:41,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:55:41,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:55:41,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325890678] [2023-11-29 01:55:41,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325890678] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:55:41,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:55:41,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:55:41,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683058439] [2023-11-29 01:55:41,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:55:41,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:55:41,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:55:41,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:55:41,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:55:41,618 INFO L87 Difference]: Start difference. First operand 29156 states and 44003 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:41,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:55:41,830 INFO L93 Difference]: Finished difference Result 59558 states and 89252 transitions. [2023-11-29 01:55:41,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:55:41,830 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-11-29 01:55:41,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:55:41,945 INFO L225 Difference]: With dead ends: 59558 [2023-11-29 01:55:41,946 INFO L226 Difference]: Without dead ends: 59556 [2023-11-29 01:55:41,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:55:41,956 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 284 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:55:41,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 886 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:55:41,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59556 states. [2023-11-29 01:55:42,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59556 to 30436. [2023-11-29 01:55:42,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30436 states, 30435 states have (on average 1.487859372433054) internal successors, (45283), 30435 states have internal predecessors, (45283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:42,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30436 states to 30436 states and 45283 transitions. [2023-11-29 01:55:42,782 INFO L78 Accepts]: Start accepts. Automaton has 30436 states and 45283 transitions. Word has length 66 [2023-11-29 01:55:42,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:55:42,782 INFO L495 AbstractCegarLoop]: Abstraction has 30436 states and 45283 transitions. [2023-11-29 01:55:42,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:42,782 INFO L276 IsEmpty]: Start isEmpty. Operand 30436 states and 45283 transitions. [2023-11-29 01:55:42,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-29 01:55:42,783 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:55:42,784 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] [2023-11-29 01:55:42,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 01:55:42,784 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:55:42,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:55:42,784 INFO L85 PathProgramCache]: Analyzing trace with hash 856500609, now seen corresponding path program 1 times [2023-11-29 01:55:42,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:55:42,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830640022] [2023-11-29 01:55:42,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:42,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:55:42,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:42,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:55:42,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:55:42,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830640022] [2023-11-29 01:55:42,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830640022] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:55:42,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:55:42,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:55:42,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921737764] [2023-11-29 01:55:42,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:55:42,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:55:42,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:55:42,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:55:42,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:55:42,855 INFO L87 Difference]: Start difference. First operand 30436 states and 45283 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:43,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:55:43,095 INFO L93 Difference]: Finished difference Result 74186 states and 110319 transitions. [2023-11-29 01:55:43,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:55:43,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2023-11-29 01:55:43,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:55:43,136 INFO L225 Difference]: With dead ends: 74186 [2023-11-29 01:55:43,136 INFO L226 Difference]: Without dead ends: 43784 [2023-11-29 01:55:43,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:55:43,163 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 107 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:55:43,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 326 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:55:43,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43784 states. [2023-11-29 01:55:43,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43784 to 43782. [2023-11-29 01:55:43,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43782 states, 43781 states have (on average 1.4796601265389095) internal successors, (64781), 43781 states have internal predecessors, (64781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:43,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43782 states to 43782 states and 64781 transitions. [2023-11-29 01:55:43,741 INFO L78 Accepts]: Start accepts. Automaton has 43782 states and 64781 transitions. Word has length 67 [2023-11-29 01:55:43,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:55:43,741 INFO L495 AbstractCegarLoop]: Abstraction has 43782 states and 64781 transitions. [2023-11-29 01:55:43,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:43,741 INFO L276 IsEmpty]: Start isEmpty. Operand 43782 states and 64781 transitions. [2023-11-29 01:55:43,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-29 01:55:43,754 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:55:43,754 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:55:43,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 01:55:43,754 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:55:43,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:55:43,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1378989132, now seen corresponding path program 1 times [2023-11-29 01:55:43,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:55:43,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579280066] [2023-11-29 01:55:43,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:43,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:55:43,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:43,918 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 01:55:43,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:55:43,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579280066] [2023-11-29 01:55:43,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579280066] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:55:43,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405754743] [2023-11-29 01:55:43,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:43,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:55:43,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_952fe3fa-c87f-44c9-a2f9-102e2b4f39c5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:55:43,922 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_952fe3fa-c87f-44c9-a2f9-102e2b4f39c5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:55:43,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_952fe3fa-c87f-44c9-a2f9-102e2b4f39c5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:55:44,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:44,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 01:55:44,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:55:44,339 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 01:55:44,339 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:55:44,830 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 01:55:44,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405754743] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:55:44,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:55:44,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 5] total 10 [2023-11-29 01:55:44,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453177503] [2023-11-29 01:55:44,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:55:44,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:55:44,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:55:44,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:55:44,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=50, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:55:44,833 INFO L87 Difference]: Start difference. First operand 43782 states and 64781 transitions. Second operand has 10 states, 10 states have (on average 24.2) internal successors, (242), 10 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:45,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:55:45,372 INFO L93 Difference]: Finished difference Result 137190 states and 204045 transitions. [2023-11-29 01:55:45,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:55:45,373 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 24.2) internal successors, (242), 10 states have internal predecessors, (242), 0 states have call successors, (0), 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 [2023-11-29 01:55:45,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:55:45,477 INFO L225 Difference]: With dead ends: 137190 [2023-11-29 01:55:45,477 INFO L226 Difference]: Without dead ends: 106788 [2023-11-29 01:55:45,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=60, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:55:45,507 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 699 mSDsluCounter, 1324 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 699 SdHoareTripleChecker+Valid, 1587 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:55:45,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [699 Valid, 1587 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:55:45,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106788 states. [2023-11-29 01:55:46,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106788 to 101254. [2023-11-29 01:55:46,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101254 states, 101253 states have (on average 1.4741390378556685) internal successors, (149261), 101253 states have internal predecessors, (149261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:46,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101254 states to 101254 states and 149261 transitions. [2023-11-29 01:55:46,743 INFO L78 Accepts]: Start accepts. Automaton has 101254 states and 149261 transitions. Word has length 92 [2023-11-29 01:55:46,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:55:46,744 INFO L495 AbstractCegarLoop]: Abstraction has 101254 states and 149261 transitions. [2023-11-29 01:55:46,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.2) internal successors, (242), 10 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:46,744 INFO L276 IsEmpty]: Start isEmpty. Operand 101254 states and 149261 transitions. [2023-11-29 01:55:46,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-29 01:55:46,760 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:55:46,761 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:55:46,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_952fe3fa-c87f-44c9-a2f9-102e2b4f39c5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:55:46,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_952fe3fa-c87f-44c9-a2f9-102e2b4f39c5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:55:46,961 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:55:46,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:55:46,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1846539331, now seen corresponding path program 1 times [2023-11-29 01:55:46,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:55:46,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645416551] [2023-11-29 01:55:46,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:46,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:55:46,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:47,015 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:55:47,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:55:47,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645416551] [2023-11-29 01:55:47,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645416551] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:55:47,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:55:47,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:55:47,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193631355] [2023-11-29 01:55:47,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:55:47,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:55:47,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:55:47,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:55:47,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:55:47,017 INFO L87 Difference]: Start difference. First operand 101254 states and 149261 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:47,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:55:47,632 INFO L93 Difference]: Finished difference Result 136775 states and 201447 transitions. [2023-11-29 01:55:47,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:55:47,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 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 [2023-11-29 01:55:47,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:55:47,724 INFO L225 Difference]: With dead ends: 136775 [2023-11-29 01:55:47,724 INFO L226 Difference]: Without dead ends: 103149 [2023-11-29 01:55:47,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:55:47,752 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 109 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:55:47,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 416 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:55:48,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103149 states. [2023-11-29 01:55:48,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103149 to 101406. [2023-11-29 01:55:49,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101406 states, 101405 states have (on average 1.4535969626744243) internal successors, (147402), 101405 states have internal predecessors, (147402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:49,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101406 states to 101406 states and 147402 transitions. [2023-11-29 01:55:49,158 INFO L78 Accepts]: Start accepts. Automaton has 101406 states and 147402 transitions. Word has length 93 [2023-11-29 01:55:49,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:55:49,158 INFO L495 AbstractCegarLoop]: Abstraction has 101406 states and 147402 transitions. [2023-11-29 01:55:49,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:49,158 INFO L276 IsEmpty]: Start isEmpty. Operand 101406 states and 147402 transitions. [2023-11-29 01:55:49,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-29 01:55:49,167 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:55:49,168 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:55:49,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 01:55:49,168 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:55:49,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:55:49,168 INFO L85 PathProgramCache]: Analyzing trace with hash -571745188, now seen corresponding path program 1 times [2023-11-29 01:55:49,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:55:49,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806537603] [2023-11-29 01:55:49,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:49,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:55:49,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:49,242 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:55:49,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:55:49,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806537603] [2023-11-29 01:55:49,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806537603] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:55:49,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:55:49,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:55:49,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568036972] [2023-11-29 01:55:49,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:55:49,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:55:49,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:55:49,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:55:49,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:55:49,244 INFO L87 Difference]: Start difference. First operand 101406 states and 147402 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:49,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:55:49,813 INFO L93 Difference]: Finished difference Result 178397 states and 259745 transitions. [2023-11-29 01:55:49,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:55:49,814 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 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 [2023-11-29 01:55:49,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:55:49,932 INFO L225 Difference]: With dead ends: 178397 [2023-11-29 01:55:49,932 INFO L226 Difference]: Without dead ends: 128940 [2023-11-29 01:55:49,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:55:49,967 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 108 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:55:49,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 397 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:55:50,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128940 states. [2023-11-29 01:55:51,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128940 to 125028. [2023-11-29 01:55:51,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125028 states, 125027 states have (on average 1.4370815903764786) internal successors, (179674), 125027 states have internal predecessors, (179674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:51,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125028 states to 125028 states and 179674 transitions. [2023-11-29 01:55:51,714 INFO L78 Accepts]: Start accepts. Automaton has 125028 states and 179674 transitions. Word has length 93 [2023-11-29 01:55:51,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:55:51,714 INFO L495 AbstractCegarLoop]: Abstraction has 125028 states and 179674 transitions. [2023-11-29 01:55:51,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:51,715 INFO L276 IsEmpty]: Start isEmpty. Operand 125028 states and 179674 transitions. [2023-11-29 01:55:51,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-29 01:55:51,724 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:55:51,725 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:55:51,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 01:55:51,725 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:55:51,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:55:51,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1523254369, now seen corresponding path program 1 times [2023-11-29 01:55:51,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:55:51,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81288470] [2023-11-29 01:55:51,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:51,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:55:51,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:51,777 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:55:51,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:55:51,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81288470] [2023-11-29 01:55:51,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81288470] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:55:51,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:55:51,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:55:51,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111372339] [2023-11-29 01:55:51,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:55:51,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:55:51,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:55:51,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:55:51,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:55:51,779 INFO L87 Difference]: Start difference. First operand 125028 states and 179674 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:52,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:55:52,507 INFO L93 Difference]: Finished difference Result 280592 states and 403664 transitions. [2023-11-29 01:55:52,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:55:52,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 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 [2023-11-29 01:55:52,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:55:52,668 INFO L225 Difference]: With dead ends: 280592 [2023-11-29 01:55:52,668 INFO L226 Difference]: Without dead ends: 190297 [2023-11-29 01:55:52,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:55:52,708 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 107 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:55:52,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 378 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:55:52,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190297 states. [2023-11-29 01:55:54,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190297 to 187107. [2023-11-29 01:55:54,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187107 states, 187106 states have (on average 1.422348829006018) internal successors, (266130), 187106 states have internal predecessors, (266130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:55,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187107 states to 187107 states and 266130 transitions. [2023-11-29 01:55:55,155 INFO L78 Accepts]: Start accepts. Automaton has 187107 states and 266130 transitions. Word has length 93 [2023-11-29 01:55:55,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:55:55,155 INFO L495 AbstractCegarLoop]: Abstraction has 187107 states and 266130 transitions. [2023-11-29 01:55:55,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:55,156 INFO L276 IsEmpty]: Start isEmpty. Operand 187107 states and 266130 transitions. [2023-11-29 01:55:55,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-29 01:55:55,168 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:55:55,168 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:55:55,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 01:55:55,168 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:55:55,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:55:55,169 INFO L85 PathProgramCache]: Analyzing trace with hash 666224652, now seen corresponding path program 1 times [2023-11-29 01:55:55,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:55:55,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477274598] [2023-11-29 01:55:55,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:55,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:55:55,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:55,337 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 01:55:55,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:55:55,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477274598] [2023-11-29 01:55:55,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477274598] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:55:55,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:55:55,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:55:55,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627438991] [2023-11-29 01:55:55,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:55:55,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:55:55,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:55:55,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:55:55,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:55:55,339 INFO L87 Difference]: Start difference. First operand 187107 states and 266130 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:57,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:55:57,038 INFO L93 Difference]: Finished difference Result 525607 states and 754340 transitions. [2023-11-29 01:55:57,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:55:57,038 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 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 [2023-11-29 01:55:57,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:55:57,601 INFO L225 Difference]: With dead ends: 525607 [2023-11-29 01:55:57,601 INFO L226 Difference]: Without dead ends: 437871 [2023-11-29 01:55:57,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:55:57,687 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 1179 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1179 SdHoareTripleChecker+Valid, 1844 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:55:57,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1179 Valid, 1844 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:55:57,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437871 states. [2023-11-29 01:56:01,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437871 to 267290. [2023-11-29 01:56:01,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267290 states, 267289 states have (on average 1.4194972482967874) internal successors, (379416), 267289 states have internal predecessors, (379416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:56:01,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267290 states to 267290 states and 379416 transitions. [2023-11-29 01:56:01,892 INFO L78 Accepts]: Start accepts. Automaton has 267290 states and 379416 transitions. Word has length 93 [2023-11-29 01:56:01,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:56:01,893 INFO L495 AbstractCegarLoop]: Abstraction has 267290 states and 379416 transitions. [2023-11-29 01:56:01,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:56:01,893 INFO L276 IsEmpty]: Start isEmpty. Operand 267290 states and 379416 transitions. [2023-11-29 01:56:01,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-29 01:56:01,907 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:56:01,907 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:56:01,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 01:56:01,908 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:56:01,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:56:01,908 INFO L85 PathProgramCache]: Analyzing trace with hash 585351372, now seen corresponding path program 1 times [2023-11-29 01:56:01,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:56:01,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811039280] [2023-11-29 01:56:01,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:56:01,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:56:01,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:01,978 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:56:01,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:56:01,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811039280] [2023-11-29 01:56:01,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811039280] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:56:01,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:56:01,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:56:01,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520190713] [2023-11-29 01:56:01,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:56:01,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:56:01,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:56:01,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:56:01,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:56:01,979 INFO L87 Difference]: Start difference. First operand 267290 states and 379416 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:56:04,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:56:04,060 INFO L93 Difference]: Finished difference Result 748565 states and 1060229 transitions. [2023-11-29 01:56:04,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:56:04,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 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 [2023-11-29 01:56:04,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:56:05,046 INFO L225 Difference]: With dead ends: 748565 [2023-11-29 01:56:05,046 INFO L226 Difference]: Without dead ends: 497978 [2023-11-29 01:56:05,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:56:05,122 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 104 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:56:05,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 358 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:56:05,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497978 states. [2023-11-29 01:56:10,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497978 to 497657. [2023-11-29 01:56:10,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497657 states, 497656 states have (on average 1.4025431221566704) internal successors, (697984), 497656 states have internal predecessors, (697984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:56:11,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497657 states to 497657 states and 697984 transitions. [2023-11-29 01:56:11,964 INFO L78 Accepts]: Start accepts. Automaton has 497657 states and 697984 transitions. Word has length 93 [2023-11-29 01:56:11,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:56:11,964 INFO L495 AbstractCegarLoop]: Abstraction has 497657 states and 697984 transitions. [2023-11-29 01:56:11,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:56:11,964 INFO L276 IsEmpty]: Start isEmpty. Operand 497657 states and 697984 transitions. [2023-11-29 01:56:11,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-29 01:56:11,984 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:56:11,984 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:56:11,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 01:56:11,985 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:56:11,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:56:11,985 INFO L85 PathProgramCache]: Analyzing trace with hash 945521640, now seen corresponding path program 1 times [2023-11-29 01:56:11,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:56:11,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565266210] [2023-11-29 01:56:11,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:56:11,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:56:12,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:12,099 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 01:56:12,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:56:12,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565266210] [2023-11-29 01:56:12,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565266210] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:56:12,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:56:12,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:56:12,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125251302] [2023-11-29 01:56:12,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:56:12,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:56:12,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:56:12,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:56:12,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:56:12,101 INFO L87 Difference]: Start difference. First operand 497657 states and 697984 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:56:15,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:56:15,128 INFO L93 Difference]: Finished difference Result 1101304 states and 1560172 transitions. [2023-11-29 01:56:15,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:56:15,128 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 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 93 [2023-11-29 01:56:15,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:56:16,493 INFO L225 Difference]: With dead ends: 1101304 [2023-11-29 01:56:16,493 INFO L226 Difference]: Without dead ends: 955987 [2023-11-29 01:56:16,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:56:16,629 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 1212 mSDsluCounter, 1179 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1212 SdHoareTripleChecker+Valid, 1506 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:56:16,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1212 Valid, 1506 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:56:17,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955987 states. [2023-11-29 01:56:24,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955987 to 635864. [2023-11-29 01:56:24,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635864 states, 635863 states have (on average 1.4021039123207357) internal successors, (891546), 635863 states have internal predecessors, (891546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:56:26,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635864 states to 635864 states and 891546 transitions. [2023-11-29 01:56:26,505 INFO L78 Accepts]: Start accepts. Automaton has 635864 states and 891546 transitions. Word has length 93 [2023-11-29 01:56:26,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:56:26,506 INFO L495 AbstractCegarLoop]: Abstraction has 635864 states and 891546 transitions. [2023-11-29 01:56:26,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:56:26,506 INFO L276 IsEmpty]: Start isEmpty. Operand 635864 states and 891546 transitions. [2023-11-29 01:56:26,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-29 01:56:26,521 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:56:26,521 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:56:26,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 01:56:26,521 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:56:26,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:56:26,522 INFO L85 PathProgramCache]: Analyzing trace with hash 290015031, now seen corresponding path program 1 times [2023-11-29 01:56:26,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:56:26,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906960136] [2023-11-29 01:56:26,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:56:26,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:56:26,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:26,674 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 01:56:26,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:56:26,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906960136] [2023-11-29 01:56:26,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906960136] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:56:26,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:56:26,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:56:26,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219951347] [2023-11-29 01:56:26,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:56:26,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:56:26,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:56:26,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:56:26,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:56:26,676 INFO L87 Difference]: Start difference. First operand 635864 states and 891546 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:56:30,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:56:30,001 INFO L93 Difference]: Finished difference Result 1194706 states and 1690360 transitions. [2023-11-29 01:56:30,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:56:30,002 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 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 [2023-11-29 01:56:30,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:56:31,360 INFO L225 Difference]: With dead ends: 1194706 [2023-11-29 01:56:31,360 INFO L226 Difference]: Without dead ends: 1073157 [2023-11-29 01:56:32,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:56:32,075 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 1295 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1295 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:56:32,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1295 Valid, 1476 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:56:32,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073157 states. [2023-11-29 01:56:40,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073157 to 734104. [2023-11-29 01:56:40,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734104 states, 734103 states have (on average 1.4029557160235009) internal successors, (1029914), 734103 states have internal predecessors, (1029914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:56:42,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734104 states to 734104 states and 1029914 transitions. [2023-11-29 01:56:42,551 INFO L78 Accepts]: Start accepts. Automaton has 734104 states and 1029914 transitions. Word has length 93 [2023-11-29 01:56:42,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:56:42,551 INFO L495 AbstractCegarLoop]: Abstraction has 734104 states and 1029914 transitions. [2023-11-29 01:56:42,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:56:42,552 INFO L276 IsEmpty]: Start isEmpty. Operand 734104 states and 1029914 transitions. [2023-11-29 01:56:42,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-29 01:56:42,566 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:56:42,566 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:56:42,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 01:56:42,566 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:56:42,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:56:42,566 INFO L85 PathProgramCache]: Analyzing trace with hash -840868212, now seen corresponding path program 1 times [2023-11-29 01:56:42,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:56:42,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287853684] [2023-11-29 01:56:42,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:56:42,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:56:42,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:42,750 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 01:56:42,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:56:42,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287853684] [2023-11-29 01:56:42,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287853684] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:56:42,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:56:42,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:56:42,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330591987] [2023-11-29 01:56:42,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:56:42,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:56:42,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:56:42,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:56:42,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:56:42,752 INFO L87 Difference]: Start difference. First operand 734104 states and 1029914 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:56:46,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:56:46,282 INFO L93 Difference]: Finished difference Result 1232903 states and 1742018 transitions. [2023-11-29 01:56:46,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:56:46,282 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 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 [2023-11-29 01:56:46,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:56:48,161 INFO L225 Difference]: With dead ends: 1232903 [2023-11-29 01:56:48,161 INFO L226 Difference]: Without dead ends: 1151749 [2023-11-29 01:56:48,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:56:48,310 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 1197 mSDsluCounter, 1246 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1197 SdHoareTripleChecker+Valid, 1569 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:56:48,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1197 Valid, 1569 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:56:48,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151749 states. [2023-11-29 01:56:58,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151749 to 812696. [2023-11-29 01:56:58,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812696 states, 812695 states have (on average 1.4033628852152407) internal successors, (1140506), 812695 states have internal predecessors, (1140506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:57:00,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812696 states to 812696 states and 1140506 transitions. [2023-11-29 01:57:00,572 INFO L78 Accepts]: Start accepts. Automaton has 812696 states and 1140506 transitions. Word has length 93 [2023-11-29 01:57:00,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:57:00,572 INFO L495 AbstractCegarLoop]: Abstraction has 812696 states and 1140506 transitions. [2023-11-29 01:57:00,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:57:00,572 INFO L276 IsEmpty]: Start isEmpty. Operand 812696 states and 1140506 transitions. [2023-11-29 01:57:00,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-29 01:57:00,589 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:57:00,589 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:57:00,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 01:57:00,589 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:57:00,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:57:00,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1123702721, now seen corresponding path program 1 times [2023-11-29 01:57:00,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:57:00,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212506248] [2023-11-29 01:57:00,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:00,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:57:00,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:00,695 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 01:57:00,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:57:00,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212506248] [2023-11-29 01:57:00,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212506248] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:57:00,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:57:00,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:57:00,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656922201] [2023-11-29 01:57:00,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:57:00,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:57:00,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:57:00,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:57:00,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:57:00,697 INFO L87 Difference]: Start difference. First operand 812696 states and 1140506 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 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)