./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.UNBOUNDED.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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb15e47-8f10-47f1-99d9-649788d0e30b/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb15e47-8f10-47f1-99d9-649788d0e30b/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_fcb15e47-8f10-47f1-99d9-649788d0e30b/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb15e47-8f10-47f1-99d9-649788d0e30b/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb15e47-8f10-47f1-99d9-649788d0e30b/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_fcb15e47-8f10-47f1-99d9-649788d0e30b/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 a9066ec9ee7e14c7adf63eb106d945f26321fdd64b3726b0fe14ce5b202a77d4 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 07:05:11,627 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 07:05:11,687 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb15e47-8f10-47f1-99d9-649788d0e30b/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 07:05:11,691 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 07:05:11,691 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 07:05:11,712 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 07:05:11,713 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 07:05:11,713 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 07:05:11,714 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 07:05:11,715 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 07:05:11,715 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 07:05:11,716 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 07:05:11,717 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 07:05:11,717 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 07:05:11,718 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 07:05:11,718 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 07:05:11,719 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 07:05:11,719 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 07:05:11,720 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 07:05:11,720 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 07:05:11,721 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 07:05:11,721 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 07:05:11,722 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 07:05:11,722 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 07:05:11,723 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 07:05:11,723 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 07:05:11,723 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 07:05:11,724 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 07:05:11,724 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 07:05:11,725 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 07:05:11,725 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 07:05:11,726 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 07:05:11,726 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 07:05:11,727 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 07:05:11,727 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 07:05:11,727 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 07:05:11,728 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 07:05:11,728 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 07:05:11,729 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 07:05:11,729 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 07:05:11,729 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 07:05:11,730 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 07:05:11,730 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_fcb15e47-8f10-47f1-99d9-649788d0e30b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb15e47-8f10-47f1-99d9-649788d0e30b/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9066ec9ee7e14c7adf63eb106d945f26321fdd64b3726b0fe14ce5b202a77d4 [2023-11-29 07:05:11,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 07:05:11,972 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 07:05:11,975 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 07:05:11,976 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 07:05:11,976 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 07:05:11,978 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb15e47-8f10-47f1-99d9-649788d0e30b/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-11-29 07:05:14,746 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 07:05:15,051 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 07:05:15,052 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb15e47-8f10-47f1-99d9-649788d0e30b/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-11-29 07:05:15,072 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb15e47-8f10-47f1-99d9-649788d0e30b/bin/uautomizer-verify-BQ2R08f2Ya/data/deff6c90a/40c756a9afb441a08c01ba8c02820fc6/FLAGfc6b292f2 [2023-11-29 07:05:15,084 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb15e47-8f10-47f1-99d9-649788d0e30b/bin/uautomizer-verify-BQ2R08f2Ya/data/deff6c90a/40c756a9afb441a08c01ba8c02820fc6 [2023-11-29 07:05:15,086 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 07:05:15,087 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 07:05:15,088 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 07:05:15,088 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 07:05:15,092 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 07:05:15,093 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:05:15" (1/1) ... [2023-11-29 07:05:15,094 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c8ff4ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:05:15, skipping insertion in model container [2023-11-29 07:05:15,094 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:05:15" (1/1) ... [2023-11-29 07:05:15,174 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 07:05:15,513 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_fcb15e47-8f10-47f1-99d9-649788d0e30b/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[21939,21952] [2023-11-29 07:05:15,637 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 07:05:15,656 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 07:05:15,771 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_fcb15e47-8f10-47f1-99d9-649788d0e30b/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[21939,21952] [2023-11-29 07:05:15,833 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 07:05:15,851 INFO L206 MainTranslator]: Completed translation [2023-11-29 07:05:15,852 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:05:15 WrapperNode [2023-11-29 07:05:15,852 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 07:05:15,852 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 07:05:15,853 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 07:05:15,853 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 07:05:15,859 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:05:15" (1/1) ... [2023-11-29 07:05:15,886 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:05:15" (1/1) ... [2023-11-29 07:05:15,974 INFO L138 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2858 [2023-11-29 07:05:15,975 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 07:05:15,975 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 07:05:15,975 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 07:05:15,975 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 07:05:15,984 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:05:15" (1/1) ... [2023-11-29 07:05:15,984 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:05:15" (1/1) ... [2023-11-29 07:05:15,998 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:05:15" (1/1) ... [2023-11-29 07:05:16,030 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 07:05:16,030 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:05:15" (1/1) ... [2023-11-29 07:05:16,030 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:05:15" (1/1) ... [2023-11-29 07:05:16,060 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:05:15" (1/1) ... [2023-11-29 07:05:16,081 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:05:15" (1/1) ... [2023-11-29 07:05:16,089 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:05:15" (1/1) ... [2023-11-29 07:05:16,097 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:05:15" (1/1) ... [2023-11-29 07:05:16,106 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 07:05:16,107 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 07:05:16,107 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 07:05:16,107 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 07:05:16,108 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:05:15" (1/1) ... [2023-11-29 07:05:16,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 07:05:16,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb15e47-8f10-47f1-99d9-649788d0e30b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:05:16,132 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb15e47-8f10-47f1-99d9-649788d0e30b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 07:05:16,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb15e47-8f10-47f1-99d9-649788d0e30b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 07:05:16,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 07:05:16,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 07:05:16,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 07:05:16,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 07:05:16,342 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 07:05:16,343 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 07:05:18,133 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 07:05:18,204 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 07:05:18,204 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 07:05:18,205 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:05:18 BoogieIcfgContainer [2023-11-29 07:05:18,205 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 07:05:18,207 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 07:05:18,208 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 07:05:18,211 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 07:05:18,211 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:05:15" (1/3) ... [2023-11-29 07:05:18,212 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44b32597 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:05:18, skipping insertion in model container [2023-11-29 07:05:18,212 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:05:15" (2/3) ... [2023-11-29 07:05:18,213 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44b32597 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:05:18, skipping insertion in model container [2023-11-29 07:05:18,213 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:05:18" (3/3) ... [2023-11-29 07:05:18,214 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-11-29 07:05:18,232 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 07:05:18,232 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 07:05:18,301 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 07:05:18,308 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;@3d216742, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 07:05:18,308 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 07:05:18,317 INFO L276 IsEmpty]: Start isEmpty. Operand has 751 states, 741 states have (on average 1.8394062078272604) internal successors, (1363), 750 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:18,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-11-29 07:05:18,344 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:05:18,345 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:05:18,346 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:05:18,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:05:18,351 INFO L85 PathProgramCache]: Analyzing trace with hash 912866512, now seen corresponding path program 1 times [2023-11-29 07:05:18,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:05:18,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901252526] [2023-11-29 07:05:18,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:05:18,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:05:18,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:05:19,012 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 07:05:19,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:05:19,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901252526] [2023-11-29 07:05:19,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901252526] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:05:19,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:05:19,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:05:19,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170478690] [2023-11-29 07:05:19,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:05:19,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:05:19,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:05:19,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:05:19,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:05:19,055 INFO L87 Difference]: Start difference. First operand has 751 states, 741 states have (on average 1.8394062078272604) internal successors, (1363), 750 states have internal predecessors, (1363), 0 states have call successors, (0), 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 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:19,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:05:19,194 INFO L93 Difference]: Finished difference Result 1154 states and 2018 transitions. [2023-11-29 07:05:19,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:05:19,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 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 202 [2023-11-29 07:05:19,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:05:19,221 INFO L225 Difference]: With dead ends: 1154 [2023-11-29 07:05:19,221 INFO L226 Difference]: Without dead ends: 926 [2023-11-29 07:05:19,226 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 07:05:19,230 INFO L413 NwaCegarLoop]: 1354 mSDtfsCounter, 351 mSDsluCounter, 1253 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 2607 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:05:19,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 2607 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 07:05:19,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2023-11-29 07:05:19,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 923. [2023-11-29 07:05:19,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 923 states, 922 states have (on average 1.7234273318872018) internal successors, (1589), 922 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:19,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 1589 transitions. [2023-11-29 07:05:19,321 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 1589 transitions. Word has length 202 [2023-11-29 07:05:19,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:05:19,322 INFO L495 AbstractCegarLoop]: Abstraction has 923 states and 1589 transitions. [2023-11-29 07:05:19,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:19,322 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 1589 transitions. [2023-11-29 07:05:19,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2023-11-29 07:05:19,327 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:05:19,328 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:05:19,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 07:05:19,328 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:05:19,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:05:19,329 INFO L85 PathProgramCache]: Analyzing trace with hash 24499245, now seen corresponding path program 1 times [2023-11-29 07:05:19,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:05:19,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345613370] [2023-11-29 07:05:19,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:05:19,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:05:19,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:05:19,590 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 07:05:19,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:05:19,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345613370] [2023-11-29 07:05:19,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345613370] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:05:19,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:05:19,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:05:19,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964366561] [2023-11-29 07:05:19,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:05:19,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:05:19,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:05:19,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:05:19,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:05:19,595 INFO L87 Difference]: Start difference. First operand 923 states and 1589 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:19,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:05:19,638 INFO L93 Difference]: Finished difference Result 1663 states and 2801 transitions. [2023-11-29 07:05:19,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:05:19,638 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 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 206 [2023-11-29 07:05:19,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:05:19,647 INFO L225 Difference]: With dead ends: 1663 [2023-11-29 07:05:19,647 INFO L226 Difference]: Without dead ends: 1282 [2023-11-29 07:05:19,649 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 07:05:19,651 INFO L413 NwaCegarLoop]: 1286 mSDtfsCounter, 296 mSDsluCounter, 1237 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 2523 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:05:19,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 2523 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 07:05:19,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1282 states. [2023-11-29 07:05:19,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1282 to 1278. [2023-11-29 07:05:19,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1278 states, 1277 states have (on average 1.696945967110415) internal successors, (2167), 1277 states have internal predecessors, (2167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:19,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1278 states to 1278 states and 2167 transitions. [2023-11-29 07:05:19,690 INFO L78 Accepts]: Start accepts. Automaton has 1278 states and 2167 transitions. Word has length 206 [2023-11-29 07:05:19,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:05:19,690 INFO L495 AbstractCegarLoop]: Abstraction has 1278 states and 2167 transitions. [2023-11-29 07:05:19,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:19,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1278 states and 2167 transitions. [2023-11-29 07:05:19,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-11-29 07:05:19,695 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:05:19,695 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:05:19,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 07:05:19,695 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:05:19,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:05:19,696 INFO L85 PathProgramCache]: Analyzing trace with hash -567899920, now seen corresponding path program 1 times [2023-11-29 07:05:19,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:05:19,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854227655] [2023-11-29 07:05:19,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:05:19,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:05:19,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:05:19,914 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 07:05:19,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:05:19,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854227655] [2023-11-29 07:05:19,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854227655] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:05:19,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:05:19,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:05:19,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977710974] [2023-11-29 07:05:19,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:05:19,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:05:19,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:05:19,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:05:19,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:05:19,918 INFO L87 Difference]: Start difference. First operand 1278 states and 2167 transitions. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:19,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:05:19,970 INFO L93 Difference]: Finished difference Result 2706 states and 4493 transitions. [2023-11-29 07:05:19,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:05:19,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 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 210 [2023-11-29 07:05:19,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:05:19,983 INFO L225 Difference]: With dead ends: 2706 [2023-11-29 07:05:19,983 INFO L226 Difference]: Without dead ends: 1970 [2023-11-29 07:05:19,984 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 07:05:19,986 INFO L413 NwaCegarLoop]: 1286 mSDtfsCounter, 289 mSDsluCounter, 1238 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 2524 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:05:19,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 2524 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 07:05:19,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1970 states. [2023-11-29 07:05:20,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1970 to 1964. [2023-11-29 07:05:20,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1964 states, 1963 states have (on average 1.6683647478349466) internal successors, (3275), 1963 states have internal predecessors, (3275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:20,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1964 states to 1964 states and 3275 transitions. [2023-11-29 07:05:20,037 INFO L78 Accepts]: Start accepts. Automaton has 1964 states and 3275 transitions. Word has length 210 [2023-11-29 07:05:20,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:05:20,037 INFO L495 AbstractCegarLoop]: Abstraction has 1964 states and 3275 transitions. [2023-11-29 07:05:20,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:20,038 INFO L276 IsEmpty]: Start isEmpty. Operand 1964 states and 3275 transitions. [2023-11-29 07:05:20,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2023-11-29 07:05:20,043 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:05:20,043 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:05:20,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 07:05:20,043 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:05:20,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:05:20,044 INFO L85 PathProgramCache]: Analyzing trace with hash 319621645, now seen corresponding path program 1 times [2023-11-29 07:05:20,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:05:20,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880092386] [2023-11-29 07:05:20,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:05:20,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:05:20,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:05:20,214 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 07:05:20,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:05:20,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880092386] [2023-11-29 07:05:20,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880092386] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:05:20,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:05:20,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:05:20,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291796527] [2023-11-29 07:05:20,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:05:20,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:05:20,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:05:20,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:05:20,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:05:20,217 INFO L87 Difference]: Start difference. First operand 1964 states and 3275 transitions. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:20,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:05:20,290 INFO L93 Difference]: Finished difference Result 4720 states and 7733 transitions. [2023-11-29 07:05:20,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:05:20,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 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 214 [2023-11-29 07:05:20,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:05:20,306 INFO L225 Difference]: With dead ends: 4720 [2023-11-29 07:05:20,306 INFO L226 Difference]: Without dead ends: 3298 [2023-11-29 07:05:20,308 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 07:05:20,309 INFO L413 NwaCegarLoop]: 1286 mSDtfsCounter, 282 mSDsluCounter, 1239 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 2525 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:05:20,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 2525 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 07:05:20,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3298 states. [2023-11-29 07:05:20,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3298 to 3288. [2023-11-29 07:05:20,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3288 states, 3287 states have (on average 1.6413142683297839) internal successors, (5395), 3287 states have internal predecessors, (5395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:20,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3288 states to 3288 states and 5395 transitions. [2023-11-29 07:05:20,382 INFO L78 Accepts]: Start accepts. Automaton has 3288 states and 5395 transitions. Word has length 214 [2023-11-29 07:05:20,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:05:20,383 INFO L495 AbstractCegarLoop]: Abstraction has 3288 states and 5395 transitions. [2023-11-29 07:05:20,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:20,383 INFO L276 IsEmpty]: Start isEmpty. Operand 3288 states and 5395 transitions. [2023-11-29 07:05:20,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-11-29 07:05:20,386 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:05:20,387 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:05:20,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 07:05:20,387 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:05:20,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:05:20,388 INFO L85 PathProgramCache]: Analyzing trace with hash -859099888, now seen corresponding path program 1 times [2023-11-29 07:05:20,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:05:20,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957759417] [2023-11-29 07:05:20,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:05:20,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:05:20,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:05:20,614 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 07:05:20,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:05:20,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957759417] [2023-11-29 07:05:20,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957759417] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:05:20,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:05:20,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:05:20,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091569985] [2023-11-29 07:05:20,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:05:20,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:05:20,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:05:20,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:05:20,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:05:20,617 INFO L87 Difference]: Start difference. First operand 3288 states and 5395 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 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 07:05:20,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:05:20,712 INFO L93 Difference]: Finished difference Result 8604 states and 13925 transitions. [2023-11-29 07:05:20,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:05:20,713 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 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) Word has length 218 [2023-11-29 07:05:20,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:05:20,748 INFO L225 Difference]: With dead ends: 8604 [2023-11-29 07:05:20,748 INFO L226 Difference]: Without dead ends: 5858 [2023-11-29 07:05:20,753 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 07:05:20,754 INFO L413 NwaCegarLoop]: 1286 mSDtfsCounter, 275 mSDsluCounter, 1240 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 2526 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:05:20,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 2526 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 07:05:20,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5858 states. [2023-11-29 07:05:20,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5858 to 5840. [2023-11-29 07:05:20,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5840 states, 5839 states have (on average 1.6172289775646516) internal successors, (9443), 5839 states have internal predecessors, (9443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:20,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5840 states to 5840 states and 9443 transitions. [2023-11-29 07:05:20,943 INFO L78 Accepts]: Start accepts. Automaton has 5840 states and 9443 transitions. Word has length 218 [2023-11-29 07:05:20,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:05:20,944 INFO L495 AbstractCegarLoop]: Abstraction has 5840 states and 9443 transitions. [2023-11-29 07:05:20,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 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 07:05:20,944 INFO L276 IsEmpty]: Start isEmpty. Operand 5840 states and 9443 transitions. [2023-11-29 07:05:20,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2023-11-29 07:05:20,951 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:05:20,951 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:05:20,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 07:05:20,951 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:05:20,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:05:20,952 INFO L85 PathProgramCache]: Analyzing trace with hash -926029843, now seen corresponding path program 1 times [2023-11-29 07:05:20,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:05:20,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249369058] [2023-11-29 07:05:20,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:05:20,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:05:21,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:05:21,302 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 07:05:21,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:05:21,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249369058] [2023-11-29 07:05:21,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249369058] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:05:21,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:05:21,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 07:05:21,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497331157] [2023-11-29 07:05:21,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:05:21,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 07:05:21,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:05:21,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 07:05:21,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 07:05:21,305 INFO L87 Difference]: Start difference. First operand 5840 states and 9443 transitions. Second operand has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:21,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:05:21,998 INFO L93 Difference]: Finished difference Result 35740 states and 57757 transitions. [2023-11-29 07:05:21,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 07:05:21,999 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 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 222 [2023-11-29 07:05:22,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:05:22,121 INFO L225 Difference]: With dead ends: 35740 [2023-11-29 07:05:22,121 INFO L226 Difference]: Without dead ends: 30386 [2023-11-29 07:05:22,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-11-29 07:05:22,136 INFO L413 NwaCegarLoop]: 1293 mSDtfsCounter, 3769 mSDsluCounter, 11454 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3769 SdHoareTripleChecker+Valid, 12747 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 07:05:22,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3769 Valid, 12747 Invalid, 204 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 07:05:22,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30386 states. [2023-11-29 07:05:22,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30386 to 10819. [2023-11-29 07:05:22,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10819 states, 10818 states have (on average 1.6167498613422073) internal successors, (17490), 10818 states have internal predecessors, (17490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:22,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10819 states to 10819 states and 17490 transitions. [2023-11-29 07:05:22,547 INFO L78 Accepts]: Start accepts. Automaton has 10819 states and 17490 transitions. Word has length 222 [2023-11-29 07:05:22,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:05:22,548 INFO L495 AbstractCegarLoop]: Abstraction has 10819 states and 17490 transitions. [2023-11-29 07:05:22,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:22,548 INFO L276 IsEmpty]: Start isEmpty. Operand 10819 states and 17490 transitions. [2023-11-29 07:05:22,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-11-29 07:05:22,555 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:05:22,555 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:05:22,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 07:05:22,556 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:05:22,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:05:22,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1286226212, now seen corresponding path program 1 times [2023-11-29 07:05:22,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:05:22,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713875285] [2023-11-29 07:05:22,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:05:22,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:05:22,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:05:22,812 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 07:05:22,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:05:22,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713875285] [2023-11-29 07:05:22,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713875285] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:05:22,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:05:22,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 07:05:22,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570830552] [2023-11-29 07:05:22,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:05:22,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 07:05:22,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:05:22,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 07:05:22,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 07:05:22,815 INFO L87 Difference]: Start difference. First operand 10819 states and 17490 transitions. Second operand has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:23,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:05:23,041 INFO L93 Difference]: Finished difference Result 31750 states and 51288 transitions. [2023-11-29 07:05:23,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 07:05:23,041 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 0 states have call successors, (0), 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 223 [2023-11-29 07:05:23,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:05:23,086 INFO L225 Difference]: With dead ends: 31750 [2023-11-29 07:05:23,086 INFO L226 Difference]: Without dead ends: 21473 [2023-11-29 07:05:23,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 07:05:23,103 INFO L413 NwaCegarLoop]: 1294 mSDtfsCounter, 950 mSDsluCounter, 2853 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 950 SdHoareTripleChecker+Valid, 4147 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:05:23,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [950 Valid, 4147 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 07:05:23,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21473 states. [2023-11-29 07:05:23,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21473 to 16098. [2023-11-29 07:05:23,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16098 states, 16097 states have (on average 1.614275952040753) internal successors, (25985), 16097 states have internal predecessors, (25985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:23,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16098 states to 16098 states and 25985 transitions. [2023-11-29 07:05:23,502 INFO L78 Accepts]: Start accepts. Automaton has 16098 states and 25985 transitions. Word has length 223 [2023-11-29 07:05:23,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:05:23,502 INFO L495 AbstractCegarLoop]: Abstraction has 16098 states and 25985 transitions. [2023-11-29 07:05:23,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:23,503 INFO L276 IsEmpty]: Start isEmpty. Operand 16098 states and 25985 transitions. [2023-11-29 07:05:23,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2023-11-29 07:05:23,515 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:05:23,515 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:05:23,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 07:05:23,515 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:05:23,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:05:23,516 INFO L85 PathProgramCache]: Analyzing trace with hash -904618484, now seen corresponding path program 1 times [2023-11-29 07:05:23,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:05:23,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930614943] [2023-11-29 07:05:23,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:05:23,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:05:23,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:05:23,739 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 07:05:23,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:05:23,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930614943] [2023-11-29 07:05:23,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930614943] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:05:23,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:05:23,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:05:23,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601826279] [2023-11-29 07:05:23,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:05:23,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:05:23,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:05:23,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:05:23,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:05:23,742 INFO L87 Difference]: Start difference. First operand 16098 states and 25985 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:24,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:05:24,003 INFO L93 Difference]: Finished difference Result 35462 states and 57145 transitions. [2023-11-29 07:05:24,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:05:24,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 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 225 [2023-11-29 07:05:24,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:05:24,082 INFO L225 Difference]: With dead ends: 35462 [2023-11-29 07:05:24,082 INFO L226 Difference]: Without dead ends: 24693 [2023-11-29 07:05:24,099 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 07:05:24,100 INFO L413 NwaCegarLoop]: 1550 mSDtfsCounter, 302 mSDsluCounter, 1245 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 2795 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 07:05:24,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 2795 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 07:05:24,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24693 states. [2023-11-29 07:05:24,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24693 to 24691. [2023-11-29 07:05:24,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24691 states, 24690 states have (on average 1.6068448764682057) internal successors, (39673), 24690 states have internal predecessors, (39673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:24,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24691 states to 24691 states and 39673 transitions. [2023-11-29 07:05:24,696 INFO L78 Accepts]: Start accepts. Automaton has 24691 states and 39673 transitions. Word has length 225 [2023-11-29 07:05:24,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:05:24,697 INFO L495 AbstractCegarLoop]: Abstraction has 24691 states and 39673 transitions. [2023-11-29 07:05:24,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:24,697 INFO L276 IsEmpty]: Start isEmpty. Operand 24691 states and 39673 transitions. [2023-11-29 07:05:24,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2023-11-29 07:05:24,701 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:05:24,701 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:05:24,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 07:05:24,702 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:05:24,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:05:24,702 INFO L85 PathProgramCache]: Analyzing trace with hash 6896527, now seen corresponding path program 1 times [2023-11-29 07:05:24,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:05:24,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739150444] [2023-11-29 07:05:24,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:05:24,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:05:24,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:05:24,821 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 07:05:24,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:05:24,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739150444] [2023-11-29 07:05:24,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739150444] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:05:24,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:05:24,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:05:24,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036370336] [2023-11-29 07:05:24,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:05:24,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:05:24,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:05:24,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:05:24,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:05:24,824 INFO L87 Difference]: Start difference. First operand 24691 states and 39673 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:25,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:05:25,013 INFO L93 Difference]: Finished difference Result 47407 states and 76208 transitions. [2023-11-29 07:05:25,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:05:25,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 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 225 [2023-11-29 07:05:25,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:05:25,077 INFO L225 Difference]: With dead ends: 47407 [2023-11-29 07:05:25,077 INFO L226 Difference]: Without dead ends: 34660 [2023-11-29 07:05:25,098 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 07:05:25,099 INFO L413 NwaCegarLoop]: 1520 mSDtfsCounter, 295 mSDsluCounter, 1246 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 2766 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 07:05:25,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 2766 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 07:05:25,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34660 states. [2023-11-29 07:05:25,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34660 to 34658. [2023-11-29 07:05:25,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34658 states, 34657 states have (on average 1.6018697521424243) internal successors, (55516), 34657 states have internal predecessors, (55516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:25,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34658 states to 34658 states and 55516 transitions. [2023-11-29 07:05:25,687 INFO L78 Accepts]: Start accepts. Automaton has 34658 states and 55516 transitions. Word has length 225 [2023-11-29 07:05:25,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:05:25,688 INFO L495 AbstractCegarLoop]: Abstraction has 34658 states and 55516 transitions. [2023-11-29 07:05:25,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:25,689 INFO L276 IsEmpty]: Start isEmpty. Operand 34658 states and 55516 transitions. [2023-11-29 07:05:25,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2023-11-29 07:05:25,692 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:05:25,693 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:05:25,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 07:05:25,693 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:05:25,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:05:25,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1472369538, now seen corresponding path program 1 times [2023-11-29 07:05:25,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:05:25,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366099535] [2023-11-29 07:05:25,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:05:25,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:05:25,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:05:25,843 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 07:05:25,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:05:25,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366099535] [2023-11-29 07:05:25,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366099535] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:05:25,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:05:25,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:05:25,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138710055] [2023-11-29 07:05:25,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:05:25,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:05:25,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:05:25,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:05:25,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:05:25,846 INFO L87 Difference]: Start difference. First operand 34658 states and 55516 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:26,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:05:26,091 INFO L93 Difference]: Finished difference Result 66398 states and 106459 transitions. [2023-11-29 07:05:26,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:05:26,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 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 225 [2023-11-29 07:05:26,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:05:26,173 INFO L225 Difference]: With dead ends: 66398 [2023-11-29 07:05:26,173 INFO L226 Difference]: Without dead ends: 48439 [2023-11-29 07:05:26,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:05:26,198 INFO L413 NwaCegarLoop]: 1485 mSDtfsCounter, 288 mSDsluCounter, 1247 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 2732 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 07:05:26,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 2732 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 07:05:26,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48439 states. [2023-11-29 07:05:26,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48439 to 48437. [2023-11-29 07:05:26,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48437 states, 48436 states have (on average 1.5968081592204146) internal successors, (77343), 48436 states have internal predecessors, (77343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:26,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48437 states to 48437 states and 77343 transitions. [2023-11-29 07:05:26,896 INFO L78 Accepts]: Start accepts. Automaton has 48437 states and 77343 transitions. Word has length 225 [2023-11-29 07:05:26,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:05:26,897 INFO L495 AbstractCegarLoop]: Abstraction has 48437 states and 77343 transitions. [2023-11-29 07:05:26,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:26,897 INFO L276 IsEmpty]: Start isEmpty. Operand 48437 states and 77343 transitions. [2023-11-29 07:05:26,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2023-11-29 07:05:26,901 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:05:26,901 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:05:26,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 07:05:26,901 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:05:26,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:05:26,902 INFO L85 PathProgramCache]: Analyzing trace with hash 518702584, now seen corresponding path program 1 times [2023-11-29 07:05:26,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:05:26,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944770846] [2023-11-29 07:05:26,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:05:26,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:05:26,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:05:27,027 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 07:05:27,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:05:27,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944770846] [2023-11-29 07:05:27,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944770846] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:05:27,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:05:27,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:05:27,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738371890] [2023-11-29 07:05:27,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:05:27,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:05:27,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:05:27,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:05:27,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:05:27,030 INFO L87 Difference]: Start difference. First operand 48437 states and 77343 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:27,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:05:27,362 INFO L93 Difference]: Finished difference Result 92594 states and 148044 transitions. [2023-11-29 07:05:27,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:05:27,363 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 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 225 [2023-11-29 07:05:27,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:05:27,478 INFO L225 Difference]: With dead ends: 92594 [2023-11-29 07:05:27,478 INFO L226 Difference]: Without dead ends: 67395 [2023-11-29 07:05:27,504 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 07:05:27,505 INFO L413 NwaCegarLoop]: 1391 mSDtfsCounter, 274 mSDsluCounter, 1249 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 2640 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:05:27,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 2640 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:05:27,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67395 states. [2023-11-29 07:05:28,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67395 to 67393. [2023-11-29 07:05:28,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67393 states, 67392 states have (on average 1.5914055080721747) internal successors, (107248), 67392 states have internal predecessors, (107248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:28,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67393 states to 67393 states and 107248 transitions. [2023-11-29 07:05:28,389 INFO L78 Accepts]: Start accepts. Automaton has 67393 states and 107248 transitions. Word has length 225 [2023-11-29 07:05:28,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:05:28,389 INFO L495 AbstractCegarLoop]: Abstraction has 67393 states and 107248 transitions. [2023-11-29 07:05:28,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:28,390 INFO L276 IsEmpty]: Start isEmpty. Operand 67393 states and 107248 transitions. [2023-11-29 07:05:28,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2023-11-29 07:05:28,392 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:05:28,393 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:05:28,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 07:05:28,393 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:05:28,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:05:28,394 INFO L85 PathProgramCache]: Analyzing trace with hash -555078759, now seen corresponding path program 1 times [2023-11-29 07:05:28,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:05:28,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781655333] [2023-11-29 07:05:28,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:05:28,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:05:28,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:05:28,531 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 07:05:28,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:05:28,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781655333] [2023-11-29 07:05:28,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781655333] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:05:28,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:05:28,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:05:28,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362534269] [2023-11-29 07:05:28,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:05:28,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:05:28,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:05:28,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:05:28,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:05:28,534 INFO L87 Difference]: Start difference. First operand 67393 states and 107248 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:29,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:05:29,043 INFO L93 Difference]: Finished difference Result 128309 states and 204504 transitions. [2023-11-29 07:05:29,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:05:29,043 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 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 225 [2023-11-29 07:05:29,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:05:29,147 INFO L225 Difference]: With dead ends: 128309 [2023-11-29 07:05:29,147 INFO L226 Difference]: Without dead ends: 93110 [2023-11-29 07:05:29,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:05:29,173 INFO L413 NwaCegarLoop]: 1450 mSDtfsCounter, 281 mSDsluCounter, 1248 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 2698 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 07:05:29,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 2698 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 07:05:29,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93110 states. [2023-11-29 07:05:30,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93110 to 93108. [2023-11-29 07:05:30,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93108 states, 93107 states have (on average 1.585412482412708) internal successors, (147613), 93107 states have internal predecessors, (147613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:30,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93108 states to 93108 states and 147613 transitions. [2023-11-29 07:05:30,641 INFO L78 Accepts]: Start accepts. Automaton has 93108 states and 147613 transitions. Word has length 225 [2023-11-29 07:05:30,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:05:30,642 INFO L495 AbstractCegarLoop]: Abstraction has 93108 states and 147613 transitions. [2023-11-29 07:05:30,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:30,642 INFO L276 IsEmpty]: Start isEmpty. Operand 93108 states and 147613 transitions. [2023-11-29 07:05:30,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2023-11-29 07:05:30,644 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:05:30,644 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:05:30,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 07:05:30,645 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:05:30,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:05:30,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1818255264, now seen corresponding path program 1 times [2023-11-29 07:05:30,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:05:30,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129554041] [2023-11-29 07:05:30,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:05:30,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:05:30,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:05:31,510 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 07:05:31,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:05:31,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129554041] [2023-11-29 07:05:31,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129554041] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:05:31,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:05:31,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 07:05:31,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756992301] [2023-11-29 07:05:31,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:05:31,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 07:05:31,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:05:31,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 07:05:31,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 07:05:31,513 INFO L87 Difference]: Start difference. First operand 93108 states and 147613 transitions. Second operand has 5 states, 5 states have (on average 46.6) internal successors, (233), 5 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:32,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:05:32,087 INFO L93 Difference]: Finished difference Result 154387 states and 243672 transitions. [2023-11-29 07:05:32,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 07:05:32,088 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 46.6) internal successors, (233), 5 states have internal predecessors, (233), 0 states have call successors, (0), 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 233 [2023-11-29 07:05:32,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:05:32,254 INFO L225 Difference]: With dead ends: 154387 [2023-11-29 07:05:32,254 INFO L226 Difference]: Without dead ends: 154385 [2023-11-29 07:05:32,277 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 07:05:32,278 INFO L413 NwaCegarLoop]: 1485 mSDtfsCounter, 632 mSDsluCounter, 4063 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 5548 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:05:32,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [632 Valid, 5548 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 07:05:32,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154385 states. [2023-11-29 07:05:33,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154385 to 94076. [2023-11-29 07:05:33,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94076 states, 94075 states have (on average 1.5768057401009832) internal successors, (148338), 94075 states have internal predecessors, (148338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:33,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94076 states to 94076 states and 148338 transitions. [2023-11-29 07:05:33,681 INFO L78 Accepts]: Start accepts. Automaton has 94076 states and 148338 transitions. Word has length 233 [2023-11-29 07:05:33,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:05:33,682 INFO L495 AbstractCegarLoop]: Abstraction has 94076 states and 148338 transitions. [2023-11-29 07:05:33,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 46.6) internal successors, (233), 5 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:33,682 INFO L276 IsEmpty]: Start isEmpty. Operand 94076 states and 148338 transitions. [2023-11-29 07:05:33,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2023-11-29 07:05:33,690 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:05:33,690 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:05:33,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 07:05:33,690 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:05:33,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:05:33,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1224937371, now seen corresponding path program 1 times [2023-11-29 07:05:33,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:05:33,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544919590] [2023-11-29 07:05:33,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:05:33,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:05:33,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:05:34,193 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 07:05:34,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:05:34,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544919590] [2023-11-29 07:05:34,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544919590] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:05:34,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:05:34,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 07:05:34,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346885485] [2023-11-29 07:05:34,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:05:34,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 07:05:34,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:05:34,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 07:05:34,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 07:05:34,196 INFO L87 Difference]: Start difference. First operand 94076 states and 148338 transitions. Second operand has 7 states, 7 states have (on average 39.285714285714285) internal successors, (275), 7 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:35,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:05:35,339 INFO L93 Difference]: Finished difference Result 369793 states and 584580 transitions. [2023-11-29 07:05:35,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 07:05:35,340 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 39.285714285714285) internal successors, (275), 7 states have internal predecessors, (275), 0 states have call successors, (0), 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 275 [2023-11-29 07:05:35,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:05:36,000 INFO L225 Difference]: With dead ends: 369793 [2023-11-29 07:05:36,000 INFO L226 Difference]: Without dead ends: 331937 [2023-11-29 07:05:36,039 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 07:05:36,040 INFO L413 NwaCegarLoop]: 1614 mSDtfsCounter, 2853 mSDsluCounter, 6894 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2853 SdHoareTripleChecker+Valid, 8508 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:05:36,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2853 Valid, 8508 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:05:36,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331937 states. [2023-11-29 07:05:38,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331937 to 159280. [2023-11-29 07:05:38,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159280 states, 159279 states have (on average 1.573490541753778) internal successors, (250624), 159279 states have internal predecessors, (250624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:38,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159280 states to 159280 states and 250624 transitions. [2023-11-29 07:05:38,946 INFO L78 Accepts]: Start accepts. Automaton has 159280 states and 250624 transitions. Word has length 275 [2023-11-29 07:05:38,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:05:38,946 INFO L495 AbstractCegarLoop]: Abstraction has 159280 states and 250624 transitions. [2023-11-29 07:05:38,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 39.285714285714285) internal successors, (275), 7 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:38,947 INFO L276 IsEmpty]: Start isEmpty. Operand 159280 states and 250624 transitions. [2023-11-29 07:05:38,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2023-11-29 07:05:38,952 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:05:38,953 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:05:38,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 07:05:38,953 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:05:38,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:05:38,954 INFO L85 PathProgramCache]: Analyzing trace with hash 2136452382, now seen corresponding path program 1 times [2023-11-29 07:05:38,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:05:38,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075822592] [2023-11-29 07:05:38,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:05:38,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:05:39,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:05:39,245 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 07:05:39,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:05:39,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075822592] [2023-11-29 07:05:39,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075822592] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:05:39,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:05:39,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 07:05:39,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126933054] [2023-11-29 07:05:39,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:05:39,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 07:05:39,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:05:39,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 07:05:39,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 07:05:39,247 INFO L87 Difference]: Start difference. First operand 159280 states and 250624 transitions. Second operand has 7 states, 7 states have (on average 38.285714285714285) internal successors, (268), 7 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:40,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:05:40,655 INFO L93 Difference]: Finished difference Result 426534 states and 674199 transitions. [2023-11-29 07:05:40,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 07:05:40,656 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 38.285714285714285) internal successors, (268), 7 states have internal predecessors, (268), 0 states have call successors, (0), 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 275 [2023-11-29 07:05:40,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:05:41,071 INFO L225 Difference]: With dead ends: 426534 [2023-11-29 07:05:41,071 INFO L226 Difference]: Without dead ends: 364972 [2023-11-29 07:05:41,146 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 07:05:41,147 INFO L413 NwaCegarLoop]: 1627 mSDtfsCounter, 2835 mSDsluCounter, 6770 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2835 SdHoareTripleChecker+Valid, 8397 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:05:41,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2835 Valid, 8397 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:05:41,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364972 states. [2023-11-29 07:05:44,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364972 to 232254. [2023-11-29 07:05:44,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232254 states, 232253 states have (on average 1.5747051706544157) internal successors, (365730), 232253 states have internal predecessors, (365730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:45,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232254 states to 232254 states and 365730 transitions. [2023-11-29 07:05:45,132 INFO L78 Accepts]: Start accepts. Automaton has 232254 states and 365730 transitions. Word has length 275 [2023-11-29 07:05:45,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:05:45,132 INFO L495 AbstractCegarLoop]: Abstraction has 232254 states and 365730 transitions. [2023-11-29 07:05:45,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 38.285714285714285) internal successors, (268), 7 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:45,132 INFO L276 IsEmpty]: Start isEmpty. Operand 232254 states and 365730 transitions. [2023-11-29 07:05:45,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2023-11-29 07:05:45,139 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:05:45,139 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:05:45,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 07:05:45,140 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:05:45,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:05:45,140 INFO L85 PathProgramCache]: Analyzing trace with hash -693041903, now seen corresponding path program 1 times [2023-11-29 07:05:45,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:05:45,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775340641] [2023-11-29 07:05:45,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:05:45,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:05:45,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:05:45,409 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 07:05:45,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:05:45,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775340641] [2023-11-29 07:05:45,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775340641] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:05:45,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:05:45,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 07:05:45,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198506054] [2023-11-29 07:05:45,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:05:45,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 07:05:45,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:05:45,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 07:05:45,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 07:05:45,412 INFO L87 Difference]: Start difference. First operand 232254 states and 365730 transitions. Second operand has 7 states, 7 states have (on average 37.285714285714285) internal successors, (261), 7 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:46,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:05:46,995 INFO L93 Difference]: Finished difference Result 479024 states and 757046 transitions. [2023-11-29 07:05:46,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 07:05:46,996 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 37.285714285714285) internal successors, (261), 7 states have internal predecessors, (261), 0 states have call successors, (0), 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 275 [2023-11-29 07:05:46,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:05:47,880 INFO L225 Difference]: With dead ends: 479024 [2023-11-29 07:05:47,880 INFO L226 Difference]: Without dead ends: 417462 [2023-11-29 07:05:47,949 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 07:05:47,950 INFO L413 NwaCegarLoop]: 1619 mSDtfsCounter, 3046 mSDsluCounter, 7561 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3046 SdHoareTripleChecker+Valid, 9180 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:05:47,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3046 Valid, 9180 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:05:48,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417462 states. [2023-11-29 07:05:51,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417462 to 286301. [2023-11-29 07:05:51,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286301 states, 286300 states have (on average 1.5753684945860984) internal successors, (451028), 286300 states have internal predecessors, (451028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:52,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286301 states to 286301 states and 451028 transitions. [2023-11-29 07:05:52,176 INFO L78 Accepts]: Start accepts. Automaton has 286301 states and 451028 transitions. Word has length 275 [2023-11-29 07:05:52,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:05:52,177 INFO L495 AbstractCegarLoop]: Abstraction has 286301 states and 451028 transitions. [2023-11-29 07:05:52,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 37.285714285714285) internal successors, (261), 7 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:52,177 INFO L276 IsEmpty]: Start isEmpty. Operand 286301 states and 451028 transitions. [2023-11-29 07:05:52,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2023-11-29 07:05:52,185 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:05:52,185 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:05:52,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 07:05:52,186 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:05:52,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:05:52,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1646708857, now seen corresponding path program 1 times [2023-11-29 07:05:52,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:05:52,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436919824] [2023-11-29 07:05:52,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:05:52,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:05:52,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:05:53,370 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-29 07:05:53,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:05:53,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436919824] [2023-11-29 07:05:53,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436919824] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:05:53,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:05:53,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 07:05:53,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446249191] [2023-11-29 07:05:53,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:05:53,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 07:05:53,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:05:53,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 07:05:53,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 07:05:53,374 INFO L87 Difference]: Start difference. First operand 286301 states and 451028 transitions. Second operand has 7 states, 7 states have (on average 35.285714285714285) internal successors, (247), 7 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:55,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:05:55,510 INFO L93 Difference]: Finished difference Result 526185 states and 831542 transitions. [2023-11-29 07:05:55,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 07:05:55,511 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 35.285714285714285) internal successors, (247), 7 states have internal predecessors, (247), 0 states have call successors, (0), 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 275 [2023-11-29 07:05:55,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:05:56,072 INFO L225 Difference]: With dead ends: 526185 [2023-11-29 07:05:56,072 INFO L226 Difference]: Without dead ends: 464623 [2023-11-29 07:05:56,130 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 07:05:56,131 INFO L413 NwaCegarLoop]: 1614 mSDtfsCounter, 2897 mSDsluCounter, 7752 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2897 SdHoareTripleChecker+Valid, 9366 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:05:56,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2897 Valid, 9366 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:05:56,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464623 states. [2023-11-29 07:06:00,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464623 to 340348. [2023-11-29 07:06:00,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340348 states, 340347 states have (on average 1.575821147240904) internal successors, (536326), 340347 states have internal predecessors, (536326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:06:01,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340348 states to 340348 states and 536326 transitions. [2023-11-29 07:06:01,292 INFO L78 Accepts]: Start accepts. Automaton has 340348 states and 536326 transitions. Word has length 275 [2023-11-29 07:06:01,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:06:01,292 INFO L495 AbstractCegarLoop]: Abstraction has 340348 states and 536326 transitions. [2023-11-29 07:06:01,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 35.285714285714285) internal successors, (247), 7 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:06:01,293 INFO L276 IsEmpty]: Start isEmpty. Operand 340348 states and 536326 transitions. [2023-11-29 07:06:01,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2023-11-29 07:06:01,301 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:06:01,301 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:06:01,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 07:06:01,302 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:06:01,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:06:01,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1574477096, now seen corresponding path program 1 times [2023-11-29 07:06:01,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:06:01,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469931928] [2023-11-29 07:06:01,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:01,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:06:01,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:06:01,574 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 07:06:01,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:06:01,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469931928] [2023-11-29 07:06:01,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469931928] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:06:01,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:06:01,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 07:06:01,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415436491] [2023-11-29 07:06:01,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:06:01,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 07:06:01,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:06:01,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 07:06:01,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 07:06:01,577 INFO L87 Difference]: Start difference. First operand 340348 states and 536326 transitions. Second operand has 7 states, 7 states have (on average 36.285714285714285) internal successors, (254), 7 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:06:03,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:06:03,538 INFO L93 Difference]: Finished difference Result 561093 states and 886811 transitions. [2023-11-29 07:06:03,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 07:06:03,538 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 36.285714285714285) internal successors, (254), 7 states have internal predecessors, (254), 0 states have call successors, (0), 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 275 [2023-11-29 07:06:03,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:06:04,622 INFO L225 Difference]: With dead ends: 561093 [2023-11-29 07:06:04,623 INFO L226 Difference]: Without dead ends: 499531 [2023-11-29 07:06:04,706 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 07:06:04,707 INFO L413 NwaCegarLoop]: 1622 mSDtfsCounter, 2600 mSDsluCounter, 7094 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2600 SdHoareTripleChecker+Valid, 8716 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:06:04,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2600 Valid, 8716 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:06:05,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499531 states. [2023-11-29 07:06:09,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499531 to 394395. [2023-11-29 07:06:09,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394395 states, 394394 states have (on average 1.5761497385862868) internal successors, (621624), 394394 states have internal predecessors, (621624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:06:10,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394395 states to 394395 states and 621624 transitions. [2023-11-29 07:06:10,120 INFO L78 Accepts]: Start accepts. Automaton has 394395 states and 621624 transitions. Word has length 275 [2023-11-29 07:06:10,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:06:10,120 INFO L495 AbstractCegarLoop]: Abstraction has 394395 states and 621624 transitions. [2023-11-29 07:06:10,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 36.285714285714285) internal successors, (254), 7 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:06:10,121 INFO L276 IsEmpty]: Start isEmpty. Operand 394395 states and 621624 transitions. [2023-11-29 07:06:10,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2023-11-29 07:06:10,130 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:06:10,130 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:06:10,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 07:06:10,130 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:06:10,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:06:10,131 INFO L85 PathProgramCache]: Analyzing trace with hash -753266890, now seen corresponding path program 1 times [2023-11-29 07:06:10,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:06:10,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814047563] [2023-11-29 07:06:10,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:10,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:06:10,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:06:10,387 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 07:06:10,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:06:10,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814047563] [2023-11-29 07:06:10,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814047563] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:06:10,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:06:10,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 07:06:10,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275257066] [2023-11-29 07:06:10,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:06:10,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 07:06:10,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:06:10,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 07:06:10,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 07:06:10,390 INFO L87 Difference]: Start difference. First operand 394395 states and 621624 transitions. Second operand has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:06:12,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:06:12,182 INFO L93 Difference]: Finished difference Result 544454 states and 859317 transitions. [2023-11-29 07:06:12,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 07:06:12,182 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 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 276 [2023-11-29 07:06:12,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:06:13,273 INFO L225 Difference]: With dead ends: 544454 [2023-11-29 07:06:13,273 INFO L226 Difference]: Without dead ends: 469270 [2023-11-29 07:06:13,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 07:06:13,345 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 561 mSDsluCounter, 2556 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 4160 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:06:13,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [561 Valid, 4160 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 07:06:13,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469270 states. [2023-11-29 07:06:17,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469270 to 436258. [2023-11-29 07:06:18,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436258 states, 436257 states have (on average 1.5760893234950957) internal successors, (687580), 436257 states have internal predecessors, (687580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:06:19,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436258 states to 436258 states and 687580 transitions. [2023-11-29 07:06:19,383 INFO L78 Accepts]: Start accepts. Automaton has 436258 states and 687580 transitions. Word has length 276 [2023-11-29 07:06:19,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:06:19,383 INFO L495 AbstractCegarLoop]: Abstraction has 436258 states and 687580 transitions. [2023-11-29 07:06:19,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:06:19,383 INFO L276 IsEmpty]: Start isEmpty. Operand 436258 states and 687580 transitions. [2023-11-29 07:06:19,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2023-11-29 07:06:19,392 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:06:19,393 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:06:19,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 07:06:19,393 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:06:19,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:06:19,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1374811634, now seen corresponding path program 1 times [2023-11-29 07:06:19,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:06:19,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061420016] [2023-11-29 07:06:19,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:19,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:06:19,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:06:19,515 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 07:06:19,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:06:19,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061420016] [2023-11-29 07:06:19,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061420016] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:06:19,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:06:19,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:06:19,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6930028] [2023-11-29 07:06:19,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:06:19,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:06:19,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:06:19,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:06:19,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:06:19,518 INFO L87 Difference]: Start difference. First operand 436258 states and 687580 transitions. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:06:22,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:06:22,554 INFO L93 Difference]: Finished difference Result 895362 states and 1413100 transitions. [2023-11-29 07:06:22,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:06:22,555 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 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 276 [2023-11-29 07:06:22,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:06:23,455 INFO L225 Difference]: With dead ends: 895362 [2023-11-29 07:06:23,456 INFO L226 Difference]: Without dead ends: 701891 [2023-11-29 07:06:23,586 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 07:06:23,588 INFO L413 NwaCegarLoop]: 1272 mSDtfsCounter, 265 mSDsluCounter, 1241 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 2513 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:06:23,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 2513 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 07:06:24,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701891 states. [2023-11-29 07:06:30,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701891 to 701054. [2023-11-29 07:06:30,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701054 states, 701053 states have (on average 1.575778150867338) internal successors, (1104704), 701053 states have internal predecessors, (1104704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:06:32,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701054 states to 701054 states and 1104704 transitions. [2023-11-29 07:06:32,525 INFO L78 Accepts]: Start accepts. Automaton has 701054 states and 1104704 transitions. Word has length 276 [2023-11-29 07:06:32,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:06:32,525 INFO L495 AbstractCegarLoop]: Abstraction has 701054 states and 1104704 transitions. [2023-11-29 07:06:32,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:06:32,525 INFO L276 IsEmpty]: Start isEmpty. Operand 701054 states and 1104704 transitions. [2023-11-29 07:06:32,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2023-11-29 07:06:32,539 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:06:32,539 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:06:32,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 07:06:32,539 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:06:32,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:06:32,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1725399783, now seen corresponding path program 1 times [2023-11-29 07:06:32,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:06:32,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066399158] [2023-11-29 07:06:32,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:32,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:06:32,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:06:32,656 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:06:32,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:06:32,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066399158] [2023-11-29 07:06:32,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066399158] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:06:32,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:06:32,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:06:32,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739149673] [2023-11-29 07:06:32,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:06:32,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:06:32,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:06:32,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:06:32,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:06:32,659 INFO L87 Difference]: Start difference. First operand 701054 states and 1104704 transitions. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)