./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 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_f98c83a6-f149-4a69-bac1-4ec8dff9a23d/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f98c83a6-f149-4a69-bac1-4ec8dff9a23d/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f98c83a6-f149-4a69-bac1-4ec8dff9a23d/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f98c83a6-f149-4a69-bac1-4ec8dff9a23d/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f98c83a6-f149-4a69-bac1-4ec8dff9a23d/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f98c83a6-f149-4a69-bac1-4ec8dff9a23d/bin/uautomizer-verify-uTZkv6EMXl --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 57425e6703a3285008157cd8157da2d7bfae6570ff511478ed083b6b19ed0aed --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:12:48,748 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:12:48,866 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f98c83a6-f149-4a69-bac1-4ec8dff9a23d/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:12:48,878 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:12:48,879 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:12:48,916 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:12:48,918 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:12:48,919 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:12:48,920 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:12:48,925 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:12:48,926 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:12:48,927 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:12:48,927 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:12:48,929 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:12:48,929 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:12:48,930 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:12:48,930 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:12:48,931 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:12:48,931 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:12:48,932 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:12:48,932 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:12:48,933 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:12:48,933 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:12:48,934 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:12:48,934 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:12:48,935 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:12:48,936 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:12:48,936 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:12:48,937 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:12:48,937 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:12:48,938 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:12:48,939 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:12:48,939 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:12:48,939 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:12:48,940 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:12:48,940 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:12:48,940 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:12:48,941 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:12:48,941 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:12:48,941 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_f98c83a6-f149-4a69-bac1-4ec8dff9a23d/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f98c83a6-f149-4a69-bac1-4ec8dff9a23d/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57425e6703a3285008157cd8157da2d7bfae6570ff511478ed083b6b19ed0aed [2023-11-12 02:12:49,245 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:12:49,280 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:12:49,282 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:12:49,284 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:12:49,285 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:12:49,286 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f98c83a6-f149-4a69-bac1-4ec8dff9a23d/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2023-11-12 02:12:52,474 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:12:52,818 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:12:52,820 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f98c83a6-f149-4a69-bac1-4ec8dff9a23d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2023-11-12 02:12:52,833 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f98c83a6-f149-4a69-bac1-4ec8dff9a23d/bin/uautomizer-verify-uTZkv6EMXl/data/f7d63c4ea/6bd60088beb148f0a0bb84adc5b30bb8/FLAGe698c0fa2 [2023-11-12 02:12:52,851 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f98c83a6-f149-4a69-bac1-4ec8dff9a23d/bin/uautomizer-verify-uTZkv6EMXl/data/f7d63c4ea/6bd60088beb148f0a0bb84adc5b30bb8 [2023-11-12 02:12:52,854 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:12:52,856 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:12:52,857 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:12:52,857 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:12:52,866 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:12:52,868 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:12:52" (1/1) ... [2023-11-12 02:12:52,869 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2822b3bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:52, skipping insertion in model container [2023-11-12 02:12:52,870 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:12:52" (1/1) ... [2023-11-12 02:12:52,922 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:12:53,154 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_f98c83a6-f149-4a69-bac1-4ec8dff9a23d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[5771,5784] [2023-11-12 02:12:53,208 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:12:53,235 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:12:53,288 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_f98c83a6-f149-4a69-bac1-4ec8dff9a23d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[5771,5784] [2023-11-12 02:12:53,321 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:12:53,350 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:12:53,351 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:53 WrapperNode [2023-11-12 02:12:53,351 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:12:53,352 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:12:53,352 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:12:53,353 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:12:53,361 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:53" (1/1) ... [2023-11-12 02:12:53,391 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:53" (1/1) ... [2023-11-12 02:12:53,444 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 452 [2023-11-12 02:12:53,445 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:12:53,445 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:12:53,446 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:12:53,446 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:12:53,456 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:53" (1/1) ... [2023-11-12 02:12:53,456 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:53" (1/1) ... [2023-11-12 02:12:53,459 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:53" (1/1) ... [2023-11-12 02:12:53,460 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:53" (1/1) ... [2023-11-12 02:12:53,469 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:53" (1/1) ... [2023-11-12 02:12:53,474 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:53" (1/1) ... [2023-11-12 02:12:53,477 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:53" (1/1) ... [2023-11-12 02:12:53,480 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:53" (1/1) ... [2023-11-12 02:12:53,485 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:12:53,486 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:12:53,486 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:12:53,486 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:12:53,487 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:53" (1/1) ... [2023-11-12 02:12:53,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:12:53,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f98c83a6-f149-4a69-bac1-4ec8dff9a23d/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:12:53,531 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f98c83a6-f149-4a69-bac1-4ec8dff9a23d/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:12:53,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f98c83a6-f149-4a69-bac1-4ec8dff9a23d/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:12:53,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:12:53,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:12:53,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:12:53,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:12:53,684 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:12:53,686 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:12:54,157 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:12:54,164 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:12:54,164 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:12:54,167 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:12:54 BoogieIcfgContainer [2023-11-12 02:12:54,167 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:12:54,169 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:12:54,170 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:12:54,173 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:12:54,173 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:12:52" (1/3) ... [2023-11-12 02:12:54,174 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d94475 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:12:54, skipping insertion in model container [2023-11-12 02:12:54,174 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:53" (2/3) ... [2023-11-12 02:12:54,175 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d94475 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:12:54, skipping insertion in model container [2023-11-12 02:12:54,175 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:12:54" (3/3) ... [2023-11-12 02:12:54,176 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2023-11-12 02:12:54,206 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:12:54,206 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:12:54,272 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:12:54,281 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;@70f4f84f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:12:54,282 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:12:54,288 INFO L276 IsEmpty]: Start isEmpty. Operand has 98 states, 95 states have (on average 1.736842105263158) internal successors, (165), 97 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:54,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-12 02:12:54,300 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:54,301 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:54,303 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:54,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:54,313 INFO L85 PathProgramCache]: Analyzing trace with hash -857023919, now seen corresponding path program 1 times [2023-11-12 02:12:54,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:54,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849975702] [2023-11-12 02:12:54,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:54,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:54,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:54,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:54,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:54,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849975702] [2023-11-12 02:12:54,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849975702] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:54,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:54,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:12:54,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201401442] [2023-11-12 02:12:54,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:54,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:12:54,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:54,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:12:54,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:12:54,863 INFO L87 Difference]: Start difference. First operand has 98 states, 95 states have (on average 1.736842105263158) internal successors, (165), 97 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:54,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:54,951 INFO L93 Difference]: Finished difference Result 218 states and 350 transitions. [2023-11-12 02:12:54,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:12:54,955 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2023-11-12 02:12:54,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:54,969 INFO L225 Difference]: With dead ends: 218 [2023-11-12 02:12:54,970 INFO L226 Difference]: Without dead ends: 144 [2023-11-12 02:12:54,972 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 [2023-11-12 02:12:54,977 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 115 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:54,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 341 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:12:55,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2023-11-12 02:12:55,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 142. [2023-11-12 02:12:55,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 1.4397163120567376) internal successors, (203), 141 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:55,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 203 transitions. [2023-11-12 02:12:55,028 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 203 transitions. Word has length 59 [2023-11-12 02:12:55,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:55,029 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 203 transitions. [2023-11-12 02:12:55,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:55,030 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 203 transitions. [2023-11-12 02:12:55,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-12 02:12:55,033 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:55,033 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:55,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:12:55,033 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:55,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:55,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1265777508, now seen corresponding path program 1 times [2023-11-12 02:12:55,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:55,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113753701] [2023-11-12 02:12:55,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:55,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:55,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:55,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:55,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:55,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113753701] [2023-11-12 02:12:55,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113753701] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:55,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:55,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:12:55,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264939645] [2023-11-12 02:12:55,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:55,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:12:55,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:55,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:12:55,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:12:55,272 INFO L87 Difference]: Start difference. First operand 142 states and 203 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:55,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:55,317 INFO L93 Difference]: Finished difference Result 342 states and 515 transitions. [2023-11-12 02:12:55,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:12:55,318 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-11-12 02:12:55,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:55,321 INFO L225 Difference]: With dead ends: 342 [2023-11-12 02:12:55,321 INFO L226 Difference]: Without dead ends: 234 [2023-11-12 02:12:55,323 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 [2023-11-12 02:12:55,324 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 77 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:55,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 284 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:12:55,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2023-11-12 02:12:55,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 232. [2023-11-12 02:12:55,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 1.4848484848484849) internal successors, (343), 231 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:55,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 343 transitions. [2023-11-12 02:12:55,352 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 343 transitions. Word has length 60 [2023-11-12 02:12:55,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:55,352 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 343 transitions. [2023-11-12 02:12:55,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:55,353 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 343 transitions. [2023-11-12 02:12:55,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-12 02:12:55,355 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:55,355 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:55,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:12:55,356 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:55,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:55,356 INFO L85 PathProgramCache]: Analyzing trace with hash -943758039, now seen corresponding path program 1 times [2023-11-12 02:12:55,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:55,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490184398] [2023-11-12 02:12:55,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:55,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:55,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:55,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:55,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:55,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490184398] [2023-11-12 02:12:55,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490184398] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:55,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:55,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:12:55,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059741577] [2023-11-12 02:12:55,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:55,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:12:55,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:55,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:12:55,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:12:55,463 INFO L87 Difference]: Start difference. First operand 232 states and 343 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:55,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:55,488 INFO L93 Difference]: Finished difference Result 596 states and 909 transitions. [2023-11-12 02:12:55,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:12:55,489 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-11-12 02:12:55,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:55,492 INFO L225 Difference]: With dead ends: 596 [2023-11-12 02:12:55,492 INFO L226 Difference]: Without dead ends: 398 [2023-11-12 02:12:55,494 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 [2023-11-12 02:12:55,495 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 72 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:55,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 280 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:12:55,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2023-11-12 02:12:55,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 396. [2023-11-12 02:12:55,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 1.5063291139240507) internal successors, (595), 395 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:55,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 595 transitions. [2023-11-12 02:12:55,546 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 595 transitions. Word has length 61 [2023-11-12 02:12:55,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:55,546 INFO L495 AbstractCegarLoop]: Abstraction has 396 states and 595 transitions. [2023-11-12 02:12:55,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:55,547 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 595 transitions. [2023-11-12 02:12:55,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-12 02:12:55,555 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:55,555 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] [2023-11-12 02:12:55,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:12:55,556 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:55,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:55,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1997598018, now seen corresponding path program 1 times [2023-11-12 02:12:55,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:55,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142917438] [2023-11-12 02:12:55,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:55,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:55,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:55,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:55,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:55,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142917438] [2023-11-12 02:12:55,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142917438] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:55,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:55,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:12:55,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385607746] [2023-11-12 02:12:55,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:55,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:12:55,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:55,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:12:55,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:12:55,770 INFO L87 Difference]: Start difference. First operand 396 states and 595 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:55,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:55,797 INFO L93 Difference]: Finished difference Result 1056 states and 1613 transitions. [2023-11-12 02:12:55,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:12:55,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-11-12 02:12:55,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:55,805 INFO L225 Difference]: With dead ends: 1056 [2023-11-12 02:12:55,805 INFO L226 Difference]: Without dead ends: 694 [2023-11-12 02:12:55,809 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 [2023-11-12 02:12:55,810 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 67 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:55,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 276 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:12:55,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2023-11-12 02:12:55,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 692. [2023-11-12 02:12:55,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 691 states have (on average 1.5094066570188134) internal successors, (1043), 691 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:55,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1043 transitions. [2023-11-12 02:12:55,836 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1043 transitions. Word has length 62 [2023-11-12 02:12:55,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:55,837 INFO L495 AbstractCegarLoop]: Abstraction has 692 states and 1043 transitions. [2023-11-12 02:12:55,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:55,837 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1043 transitions. [2023-11-12 02:12:55,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-12 02:12:55,839 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:55,839 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:55,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:12:55,839 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:55,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:55,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1910647641, now seen corresponding path program 1 times [2023-11-12 02:12:55,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:55,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013777742] [2023-11-12 02:12:55,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:55,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:55,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:55,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:55,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:55,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013777742] [2023-11-12 02:12:55,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013777742] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:55,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:55,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:12:55,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364060607] [2023-11-12 02:12:55,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:55,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:12:55,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:55,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:12:55,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:12:55,923 INFO L87 Difference]: Start difference. First operand 692 states and 1043 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:55,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:55,951 INFO L93 Difference]: Finished difference Result 1880 states and 2853 transitions. [2023-11-12 02:12:55,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:12:55,951 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-11-12 02:12:55,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:55,959 INFO L225 Difference]: With dead ends: 1880 [2023-11-12 02:12:55,959 INFO L226 Difference]: Without dead ends: 1222 [2023-11-12 02:12:55,961 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 [2023-11-12 02:12:55,962 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 62 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:55,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 272 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:12:55,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2023-11-12 02:12:55,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1220. [2023-11-12 02:12:55,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1220 states, 1219 states have (on average 1.4987694831829368) internal successors, (1827), 1219 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:55,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 1827 transitions. [2023-11-12 02:12:55,999 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 1827 transitions. Word has length 63 [2023-11-12 02:12:56,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:56,000 INFO L495 AbstractCegarLoop]: Abstraction has 1220 states and 1827 transitions. [2023-11-12 02:12:56,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:56,000 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 1827 transitions. [2023-11-12 02:12:56,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-12 02:12:56,001 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:56,002 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:56,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:12:56,002 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:56,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:56,003 INFO L85 PathProgramCache]: Analyzing trace with hash 2007440880, now seen corresponding path program 1 times [2023-11-12 02:12:56,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:56,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179609765] [2023-11-12 02:12:56,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:56,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:56,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:56,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:56,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:56,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179609765] [2023-11-12 02:12:56,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179609765] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:56,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:56,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:12:56,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396849152] [2023-11-12 02:12:56,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:56,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:12:56,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:56,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:12:56,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:12:56,247 INFO L87 Difference]: Start difference. First operand 1220 states and 1827 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:56,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:56,583 INFO L93 Difference]: Finished difference Result 13080 states and 19757 transitions. [2023-11-12 02:12:56,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-12 02:12:56,584 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-11-12 02:12:56,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:56,651 INFO L225 Difference]: With dead ends: 13080 [2023-11-12 02:12:56,652 INFO L226 Difference]: Without dead ends: 11894 [2023-11-12 02:12:56,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-11-12 02:12:56,658 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 1126 mSDsluCounter, 1285 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1126 SdHoareTripleChecker+Valid, 1407 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:56,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1126 Valid, 1407 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:12:56,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11894 states. [2023-11-12 02:12:56,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11894 to 2404. [2023-11-12 02:12:56,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2404 states, 2403 states have (on average 1.4927174365376612) internal successors, (3587), 2403 states have internal predecessors, (3587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:56,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2404 states to 2404 states and 3587 transitions. [2023-11-12 02:12:56,834 INFO L78 Accepts]: Start accepts. Automaton has 2404 states and 3587 transitions. Word has length 64 [2023-11-12 02:12:56,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:56,836 INFO L495 AbstractCegarLoop]: Abstraction has 2404 states and 3587 transitions. [2023-11-12 02:12:56,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:56,838 INFO L276 IsEmpty]: Start isEmpty. Operand 2404 states and 3587 transitions. [2023-11-12 02:12:56,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-12 02:12:56,844 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:56,844 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:56,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:12:56,844 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:56,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:56,845 INFO L85 PathProgramCache]: Analyzing trace with hash -190448501, now seen corresponding path program 1 times [2023-11-12 02:12:56,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:56,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470383181] [2023-11-12 02:12:56,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:56,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:56,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:57,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:57,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:57,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470383181] [2023-11-12 02:12:57,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470383181] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:57,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:57,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:12:57,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723207357] [2023-11-12 02:12:57,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:57,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:12:57,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:57,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:12:57,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:12:57,288 INFO L87 Difference]: Start difference. First operand 2404 states and 3587 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:57,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:57,510 INFO L93 Difference]: Finished difference Result 4776 states and 7141 transitions. [2023-11-12 02:12:57,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:12:57,511 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-11-12 02:12:57,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:57,523 INFO L225 Difference]: With dead ends: 4776 [2023-11-12 02:12:57,523 INFO L226 Difference]: Without dead ends: 2406 [2023-11-12 02:12:57,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:12:57,530 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 138 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:57,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 481 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:12:57,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2406 states. [2023-11-12 02:12:57,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2406 to 2404. [2023-11-12 02:12:57,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2404 states, 2403 states have (on average 1.4794007490636705) internal successors, (3555), 2403 states have internal predecessors, (3555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:57,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2404 states to 2404 states and 3555 transitions. [2023-11-12 02:12:57,623 INFO L78 Accepts]: Start accepts. Automaton has 2404 states and 3555 transitions. Word has length 66 [2023-11-12 02:12:57,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:57,624 INFO L495 AbstractCegarLoop]: Abstraction has 2404 states and 3555 transitions. [2023-11-12 02:12:57,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:57,624 INFO L276 IsEmpty]: Start isEmpty. Operand 2404 states and 3555 transitions. [2023-11-12 02:12:57,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-12 02:12:57,625 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:57,626 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:57,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:12:57,626 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:57,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:57,627 INFO L85 PathProgramCache]: Analyzing trace with hash -211451156, now seen corresponding path program 1 times [2023-11-12 02:12:57,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:57,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281725494] [2023-11-12 02:12:57,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:57,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:57,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:57,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:57,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:57,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281725494] [2023-11-12 02:12:57,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281725494] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:57,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:57,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:12:57,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219227552] [2023-11-12 02:12:57,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:57,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:12:57,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:57,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:12:57,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:12:57,750 INFO L87 Difference]: Start difference. First operand 2404 states and 3555 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:57,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:57,798 INFO L93 Difference]: Finished difference Result 5946 states and 8823 transitions. [2023-11-12 02:12:57,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:12:57,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-11-12 02:12:57,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:57,818 INFO L225 Difference]: With dead ends: 5946 [2023-11-12 02:12:57,819 INFO L226 Difference]: Without dead ends: 3576 [2023-11-12 02:12:57,822 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 [2023-11-12 02:12:57,825 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 56 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:57,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 245 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:12:57,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3576 states. [2023-11-12 02:12:57,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3576 to 3574. [2023-11-12 02:12:57,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3574 states, 3573 states have (on average 1.4746711446963336) internal successors, (5269), 3573 states have internal predecessors, (5269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:57,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3574 states to 3574 states and 5269 transitions. [2023-11-12 02:12:57,923 INFO L78 Accepts]: Start accepts. Automaton has 3574 states and 5269 transitions. Word has length 66 [2023-11-12 02:12:57,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:57,923 INFO L495 AbstractCegarLoop]: Abstraction has 3574 states and 5269 transitions. [2023-11-12 02:12:57,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:57,924 INFO L276 IsEmpty]: Start isEmpty. Operand 3574 states and 5269 transitions. [2023-11-12 02:12:57,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-12 02:12:57,929 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:57,929 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:57,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:12:57,930 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:57,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:57,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1610845590, now seen corresponding path program 1 times [2023-11-12 02:12:57,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:57,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073746830] [2023-11-12 02:12:57,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:57,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:57,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:58,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:58,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:58,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073746830] [2023-11-12 02:12:58,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073746830] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:58,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:58,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:12:58,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410557966] [2023-11-12 02:12:58,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:58,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:12:58,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:58,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:12:58,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:12:58,067 INFO L87 Difference]: Start difference. First operand 3574 states and 5269 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:58,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:58,306 INFO L93 Difference]: Finished difference Result 9482 states and 14023 transitions. [2023-11-12 02:12:58,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:12:58,307 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2023-11-12 02:12:58,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:58,337 INFO L225 Difference]: With dead ends: 9482 [2023-11-12 02:12:58,338 INFO L226 Difference]: Without dead ends: 5944 [2023-11-12 02:12:58,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:12:58,343 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 513 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:58,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 126 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:12:58,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5944 states. [2023-11-12 02:12:58,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5944 to 5942. [2023-11-12 02:12:58,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5942 states, 5941 states have (on average 1.4686079784548056) internal successors, (8725), 5941 states have internal predecessors, (8725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:58,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5942 states to 5942 states and 8725 transitions. [2023-11-12 02:12:58,486 INFO L78 Accepts]: Start accepts. Automaton has 5942 states and 8725 transitions. Word has length 67 [2023-11-12 02:12:58,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:58,487 INFO L495 AbstractCegarLoop]: Abstraction has 5942 states and 8725 transitions. [2023-11-12 02:12:58,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:58,487 INFO L276 IsEmpty]: Start isEmpty. Operand 5942 states and 8725 transitions. [2023-11-12 02:12:58,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-12 02:12:58,488 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:58,488 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:58,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:12:58,489 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:58,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:58,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1242574363, now seen corresponding path program 1 times [2023-11-12 02:12:58,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:58,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346761166] [2023-11-12 02:12:58,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:58,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:58,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:58,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:58,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:58,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346761166] [2023-11-12 02:12:58,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346761166] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:58,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:58,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:12:58,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844390208] [2023-11-12 02:12:58,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:58,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:12:58,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:58,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:12:58,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:12:58,626 INFO L87 Difference]: Start difference. First operand 5942 states and 8725 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:58,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:58,756 INFO L93 Difference]: Finished difference Result 11848 states and 17414 transitions. [2023-11-12 02:12:58,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:12:58,757 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2023-11-12 02:12:58,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:58,771 INFO L225 Difference]: With dead ends: 11848 [2023-11-12 02:12:58,771 INFO L226 Difference]: Without dead ends: 5942 [2023-11-12 02:12:58,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:12:58,779 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 278 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:58,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 111 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:12:58,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5942 states. [2023-11-12 02:12:58,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5942 to 5942. [2023-11-12 02:12:58,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5942 states, 5941 states have (on average 1.4551422319474836) internal successors, (8645), 5941 states have internal predecessors, (8645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:58,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5942 states to 5942 states and 8645 transitions. [2023-11-12 02:12:58,926 INFO L78 Accepts]: Start accepts. Automaton has 5942 states and 8645 transitions. Word has length 67 [2023-11-12 02:12:58,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:58,927 INFO L495 AbstractCegarLoop]: Abstraction has 5942 states and 8645 transitions. [2023-11-12 02:12:58,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:58,927 INFO L276 IsEmpty]: Start isEmpty. Operand 5942 states and 8645 transitions. [2023-11-12 02:12:58,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-12 02:12:58,928 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:58,928 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:58,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 02:12:58,928 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:58,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:58,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1771864864, now seen corresponding path program 1 times [2023-11-12 02:12:58,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:58,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678660709] [2023-11-12 02:12:58,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:58,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:58,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:59,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:59,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:59,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678660709] [2023-11-12 02:12:59,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678660709] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:59,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:59,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:12:59,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965340526] [2023-11-12 02:12:59,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:59,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:12:59,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:59,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:12:59,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:12:59,040 INFO L87 Difference]: Start difference. First operand 5942 states and 8645 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:59,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:59,174 INFO L93 Difference]: Finished difference Result 11848 states and 17254 transitions. [2023-11-12 02:12:59,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:12:59,174 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2023-11-12 02:12:59,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:59,192 INFO L225 Difference]: With dead ends: 11848 [2023-11-12 02:12:59,192 INFO L226 Difference]: Without dead ends: 5942 [2023-11-12 02:12:59,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:12:59,200 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 301 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:59,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 95 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:12:59,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5942 states. [2023-11-12 02:12:59,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5942 to 5942. [2023-11-12 02:12:59,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5942 states, 5941 states have (on average 1.4416764854401616) internal successors, (8565), 5941 states have internal predecessors, (8565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:59,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5942 states to 5942 states and 8565 transitions. [2023-11-12 02:12:59,343 INFO L78 Accepts]: Start accepts. Automaton has 5942 states and 8565 transitions. Word has length 67 [2023-11-12 02:12:59,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:59,343 INFO L495 AbstractCegarLoop]: Abstraction has 5942 states and 8565 transitions. [2023-11-12 02:12:59,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:59,344 INFO L276 IsEmpty]: Start isEmpty. Operand 5942 states and 8565 transitions. [2023-11-12 02:12:59,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-12 02:12:59,344 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:59,344 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:59,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 02:12:59,345 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:59,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:59,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1643779557, now seen corresponding path program 1 times [2023-11-12 02:12:59,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:59,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771641995] [2023-11-12 02:12:59,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:59,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:59,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:59,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:59,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:59,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771641995] [2023-11-12 02:12:59,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771641995] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:59,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:59,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:12:59,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028490774] [2023-11-12 02:12:59,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:59,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:12:59,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:59,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:12:59,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:12:59,566 INFO L87 Difference]: Start difference. First operand 5942 states and 8565 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:59,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:59,662 INFO L93 Difference]: Finished difference Result 8926 states and 12812 transitions. [2023-11-12 02:12:59,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:12:59,663 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2023-11-12 02:12:59,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:59,682 INFO L225 Difference]: With dead ends: 8926 [2023-11-12 02:12:59,682 INFO L226 Difference]: Without dead ends: 8924 [2023-11-12 02:12:59,684 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 [2023-11-12 02:12:59,685 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 167 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:59,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 565 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:12:59,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8924 states. [2023-11-12 02:12:59,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8924 to 6070. [2023-11-12 02:12:59,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6070 states, 6069 states have (on average 1.4191794364804746) internal successors, (8613), 6069 states have internal predecessors, (8613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:59,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6070 states to 6070 states and 8613 transitions. [2023-11-12 02:12:59,847 INFO L78 Accepts]: Start accepts. Automaton has 6070 states and 8613 transitions. Word has length 67 [2023-11-12 02:12:59,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:59,848 INFO L495 AbstractCegarLoop]: Abstraction has 6070 states and 8613 transitions. [2023-11-12 02:12:59,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:59,849 INFO L276 IsEmpty]: Start isEmpty. Operand 6070 states and 8613 transitions. [2023-11-12 02:12:59,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-12 02:12:59,853 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:59,854 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:59,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-12 02:12:59,854 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:59,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:59,855 INFO L85 PathProgramCache]: Analyzing trace with hash 2083961666, now seen corresponding path program 1 times [2023-11-12 02:12:59,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:59,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913334227] [2023-11-12 02:12:59,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:59,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:59,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:00,091 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 02:13:00,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:13:00,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913334227] [2023-11-12 02:13:00,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913334227] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:13:00,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:13:00,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:13:00,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996082746] [2023-11-12 02:13:00,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:13:00,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:13:00,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:13:00,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:13:00,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:13:00,095 INFO L87 Difference]: Start difference. First operand 6070 states and 8613 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:00,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:13:00,396 INFO L93 Difference]: Finished difference Result 38032 states and 53978 transitions. [2023-11-12 02:13:00,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:13:00,397 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-11-12 02:13:00,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:13:00,461 INFO L225 Difference]: With dead ends: 38032 [2023-11-12 02:13:00,462 INFO L226 Difference]: Without dead ends: 31998 [2023-11-12 02:13:00,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:13:00,475 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 766 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:13:00,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [766 Valid, 870 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:13:00,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31998 states. [2023-11-12 02:13:00,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31998 to 12102. [2023-11-12 02:13:00,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12102 states, 12101 states have (on average 1.4138500950334683) internal successors, (17109), 12101 states have internal predecessors, (17109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:00,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12102 states to 12102 states and 17109 transitions. [2023-11-12 02:13:00,938 INFO L78 Accepts]: Start accepts. Automaton has 12102 states and 17109 transitions. Word has length 93 [2023-11-12 02:13:00,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:13:00,939 INFO L495 AbstractCegarLoop]: Abstraction has 12102 states and 17109 transitions. [2023-11-12 02:13:00,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:00,939 INFO L276 IsEmpty]: Start isEmpty. Operand 12102 states and 17109 transitions. [2023-11-12 02:13:00,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-12 02:13:00,944 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:13:00,944 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:13:00,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-12 02:13:00,945 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:13:00,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:13:00,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1513365710, now seen corresponding path program 1 times [2023-11-12 02:13:00,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:13:00,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084762740] [2023-11-12 02:13:00,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:00,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:13:00,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:01,171 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-12 02:13:01,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:13:01,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084762740] [2023-11-12 02:13:01,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084762740] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:13:01,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:13:01,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:13:01,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648950094] [2023-11-12 02:13:01,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:13:01,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:13:01,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:13:01,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:13:01,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:13:01,174 INFO L87 Difference]: Start difference. First operand 12102 states and 17109 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:01,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:13:01,576 INFO L93 Difference]: Finished difference Result 44064 states and 62474 transitions. [2023-11-12 02:13:01,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:13:01,577 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-11-12 02:13:01,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:13:01,667 INFO L225 Difference]: With dead ends: 44064 [2023-11-12 02:13:01,667 INFO L226 Difference]: Without dead ends: 38030 [2023-11-12 02:13:01,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:13:01,688 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 822 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:13:01,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [822 Valid, 848 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:13:01,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38030 states. [2023-11-12 02:13:02,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38030 to 21094. [2023-11-12 02:13:02,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21094 states, 21093 states have (on average 1.4088560185843644) internal successors, (29717), 21093 states have internal predecessors, (29717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:02,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21094 states to 21094 states and 29717 transitions. [2023-11-12 02:13:02,360 INFO L78 Accepts]: Start accepts. Automaton has 21094 states and 29717 transitions. Word has length 93 [2023-11-12 02:13:02,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:13:02,360 INFO L495 AbstractCegarLoop]: Abstraction has 21094 states and 29717 transitions. [2023-11-12 02:13:02,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:02,361 INFO L276 IsEmpty]: Start isEmpty. Operand 21094 states and 29717 transitions. [2023-11-12 02:13:02,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-12 02:13:02,366 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:13:02,367 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:13:02,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-12 02:13:02,367 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:13:02,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:13:02,368 INFO L85 PathProgramCache]: Analyzing trace with hash 359419604, now seen corresponding path program 1 times [2023-11-12 02:13:02,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:13:02,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385192472] [2023-11-12 02:13:02,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:02,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:13:02,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:02,684 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-12 02:13:02,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:13:02,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385192472] [2023-11-12 02:13:02,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385192472] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:13:02,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:13:02,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:13:02,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317655156] [2023-11-12 02:13:02,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:13:02,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:13:02,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:13:02,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:13:02,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:13:02,687 INFO L87 Difference]: Start difference. First operand 21094 states and 29717 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:03,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:13:03,145 INFO L93 Difference]: Finished difference Result 50096 states and 70970 transitions. [2023-11-12 02:13:03,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:13:03,146 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-11-12 02:13:03,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:13:03,245 INFO L225 Difference]: With dead ends: 50096 [2023-11-12 02:13:03,245 INFO L226 Difference]: Without dead ends: 44062 [2023-11-12 02:13:03,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:13:03,260 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 763 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:13:03,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [763 Valid, 889 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:13:03,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44062 states. [2023-11-12 02:13:03,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44062 to 27126. [2023-11-12 02:13:03,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27126 states, 27125 states have (on average 1.408774193548387) internal successors, (38213), 27125 states have internal predecessors, (38213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:04,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27126 states to 27126 states and 38213 transitions. [2023-11-12 02:13:04,047 INFO L78 Accepts]: Start accepts. Automaton has 27126 states and 38213 transitions. Word has length 93 [2023-11-12 02:13:04,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:13:04,048 INFO L495 AbstractCegarLoop]: Abstraction has 27126 states and 38213 transitions. [2023-11-12 02:13:04,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:04,048 INFO L276 IsEmpty]: Start isEmpty. Operand 27126 states and 38213 transitions. [2023-11-12 02:13:04,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-12 02:13:04,054 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:13:04,054 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:13:04,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-12 02:13:04,054 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:13:04,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:13:04,056 INFO L85 PathProgramCache]: Analyzing trace with hash 655465032, now seen corresponding path program 1 times [2023-11-12 02:13:04,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:13:04,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964004052] [2023-11-12 02:13:04,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:04,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:13:04,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:04,364 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 02:13:04,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:13:04,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964004052] [2023-11-12 02:13:04,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964004052] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:13:04,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:13:04,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:13:04,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273584551] [2023-11-12 02:13:04,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:13:04,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:13:04,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:13:04,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:13:04,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:13:04,367 INFO L87 Difference]: Start difference. First operand 27126 states and 38213 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:04,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:13:04,783 INFO L93 Difference]: Finished difference Result 56128 states and 79466 transitions. [2023-11-12 02:13:04,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:13:04,784 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-11-12 02:13:04,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:13:05,040 INFO L225 Difference]: With dead ends: 56128 [2023-11-12 02:13:05,040 INFO L226 Difference]: Without dead ends: 50094 [2023-11-12 02:13:05,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:13:05,068 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 702 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 1002 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:13:05,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 1002 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:13:05,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50094 states. [2023-11-12 02:13:05,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50094 to 33158. [2023-11-12 02:13:05,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33158 states, 33157 states have (on average 1.4087221401212413) internal successors, (46709), 33157 states have internal predecessors, (46709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:05,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33158 states to 33158 states and 46709 transitions. [2023-11-12 02:13:05,924 INFO L78 Accepts]: Start accepts. Automaton has 33158 states and 46709 transitions. Word has length 93 [2023-11-12 02:13:05,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:13:05,924 INFO L495 AbstractCegarLoop]: Abstraction has 33158 states and 46709 transitions. [2023-11-12 02:13:05,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:05,925 INFO L276 IsEmpty]: Start isEmpty. Operand 33158 states and 46709 transitions. [2023-11-12 02:13:05,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-12 02:13:05,932 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:13:05,933 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:13:05,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-12 02:13:05,934 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:13:05,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:13:05,934 INFO L85 PathProgramCache]: Analyzing trace with hash -235568196, now seen corresponding path program 1 times [2023-11-12 02:13:05,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:13:05,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388465810] [2023-11-12 02:13:05,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:05,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:13:05,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:06,228 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:13:06,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:13:06,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388465810] [2023-11-12 02:13:06,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388465810] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:13:06,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:13:06,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:13:06,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831440865] [2023-11-12 02:13:06,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:13:06,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:13:06,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:13:06,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:13:06,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:13:06,232 INFO L87 Difference]: Start difference. First operand 33158 states and 46709 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:06,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:13:06,692 INFO L93 Difference]: Finished difference Result 59824 states and 84698 transitions. [2023-11-12 02:13:06,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:13:06,693 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-11-12 02:13:06,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:13:06,795 INFO L225 Difference]: With dead ends: 59824 [2023-11-12 02:13:06,795 INFO L226 Difference]: Without dead ends: 54958 [2023-11-12 02:13:06,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:13:06,814 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 765 mSDsluCounter, 805 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:13:06,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [765 Valid, 1017 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:13:06,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54958 states. [2023-11-12 02:13:07,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54958 to 38022. [2023-11-12 02:13:07,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38022 states, 38021 states have (on average 1.4094579311433155) internal successors, (53589), 38021 states have internal predecessors, (53589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:07,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38022 states to 38022 states and 53589 transitions. [2023-11-12 02:13:07,746 INFO L78 Accepts]: Start accepts. Automaton has 38022 states and 53589 transitions. Word has length 93 [2023-11-12 02:13:07,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:13:07,746 INFO L495 AbstractCegarLoop]: Abstraction has 38022 states and 53589 transitions. [2023-11-12 02:13:07,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:07,747 INFO L276 IsEmpty]: Start isEmpty. Operand 38022 states and 53589 transitions. [2023-11-12 02:13:07,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-12 02:13:07,755 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:13:07,756 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:13:07,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-12 02:13:07,756 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:13:07,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:13:07,757 INFO L85 PathProgramCache]: Analyzing trace with hash -601983540, now seen corresponding path program 1 times [2023-11-12 02:13:07,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:13:07,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921415204] [2023-11-12 02:13:07,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:07,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:13:07,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:08,875 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:13:08,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:13:08,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921415204] [2023-11-12 02:13:08,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921415204] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:13:08,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797351645] [2023-11-12 02:13:08,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:08,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:13:08,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f98c83a6-f149-4a69-bac1-4ec8dff9a23d/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:13:08,892 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f98c83a6-f149-4a69-bac1-4ec8dff9a23d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:13:08,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f98c83a6-f149-4a69-bac1-4ec8dff9a23d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:13:09,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:09,083 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-12 02:13:09,093 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:13:10,051 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:13:10,051 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:13:11,379 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:13:11,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797351645] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:13:11,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:13:11,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 27 [2023-11-12 02:13:11,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567763323] [2023-11-12 02:13:11,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:13:11,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-12 02:13:11,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:13:11,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-12 02:13:11,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=638, Unknown=0, NotChecked=0, Total=756 [2023-11-12 02:13:11,384 INFO L87 Difference]: Start difference. First operand 38022 states and 53589 transitions. Second operand has 28 states, 28 states have (on average 9.035714285714286) internal successors, (253), 27 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:17,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:13:17,920 INFO L93 Difference]: Finished difference Result 359938 states and 499745 transitions. [2023-11-12 02:13:17,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-11-12 02:13:17,921 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 9.035714285714286) internal successors, (253), 27 states have internal predecessors, (253), 0 states have call successors, (0), 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 95 [2023-11-12 02:13:17,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:13:18,358 INFO L225 Difference]: With dead ends: 359938 [2023-11-12 02:13:18,358 INFO L226 Difference]: Without dead ends: 321952 [2023-11-12 02:13:18,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3409 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2452, Invalid=8468, Unknown=0, NotChecked=0, Total=10920 [2023-11-12 02:13:18,769 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 2569 mSDsluCounter, 2256 mSDsCounter, 0 mSdLazyCounter, 3023 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2569 SdHoareTripleChecker+Valid, 2413 SdHoareTripleChecker+Invalid, 3046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 3023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-12 02:13:18,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2569 Valid, 2413 Invalid, 3046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 3023 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-12 02:13:19,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321952 states. [2023-11-12 02:13:21,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321952 to 90794. [2023-11-12 02:13:21,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90794 states, 90793 states have (on average 1.395515072747899) internal successors, (126703), 90793 states have internal predecessors, (126703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:21,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90794 states to 90794 states and 126703 transitions. [2023-11-12 02:13:21,434 INFO L78 Accepts]: Start accepts. Automaton has 90794 states and 126703 transitions. Word has length 95 [2023-11-12 02:13:21,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:13:21,435 INFO L495 AbstractCegarLoop]: Abstraction has 90794 states and 126703 transitions. [2023-11-12 02:13:21,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 9.035714285714286) internal successors, (253), 27 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:21,435 INFO L276 IsEmpty]: Start isEmpty. Operand 90794 states and 126703 transitions. [2023-11-12 02:13:21,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-12 02:13:21,446 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:13:21,447 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:13:21,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f98c83a6-f149-4a69-bac1-4ec8dff9a23d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:13:21,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f98c83a6-f149-4a69-bac1-4ec8dff9a23d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-12 02:13:21,647 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:13:21,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:13:21,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1755929646, now seen corresponding path program 1 times [2023-11-12 02:13:21,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:13:21,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443635751] [2023-11-12 02:13:21,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:21,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:13:21,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:22,172 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:13:22,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:13:22,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443635751] [2023-11-12 02:13:22,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443635751] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:13:22,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71538670] [2023-11-12 02:13:22,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:22,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:13:22,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f98c83a6-f149-4a69-bac1-4ec8dff9a23d/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:13:22,174 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f98c83a6-f149-4a69-bac1-4ec8dff9a23d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:13:22,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f98c83a6-f149-4a69-bac1-4ec8dff9a23d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:13:22,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:22,357 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-12 02:13:22,361 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:13:23,444 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:13:23,444 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:13:24,460 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:13:24,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71538670] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:13:24,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:13:24,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-11-12 02:13:24,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98479030] [2023-11-12 02:13:24,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:13:24,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-12 02:13:24,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:13:24,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-12 02:13:24,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2023-11-12 02:13:24,466 INFO L87 Difference]: Start difference. First operand 90794 states and 126703 transitions. Second operand has 25 states, 25 states have (on average 10.4) internal successors, (260), 24 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)