./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX --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 17c1b3adab900925d0968acf284c9fae9bc7d0ec39197e53dc7bd6b93c5a8558 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 16:47:07,922 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 16:47:08,027 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 16:47:08,032 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 16:47:08,033 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 16:47:08,058 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 16:47:08,059 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 16:47:08,059 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 16:47:08,060 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 16:47:08,060 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 16:47:08,061 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 16:47:08,061 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 16:47:08,062 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 16:47:08,063 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 16:47:08,063 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 16:47:08,064 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 16:47:08,064 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 16:47:08,065 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 16:47:08,065 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 16:47:08,066 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 16:47:08,066 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 16:47:08,067 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 16:47:08,067 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 16:47:08,068 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 16:47:08,068 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 16:47:08,068 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 16:47:08,069 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 16:47:08,069 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 16:47:08,070 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 16:47:08,071 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 16:47:08,071 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 16:47:08,071 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 16:47:08,072 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:47:08,072 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 16:47:08,073 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 16:47:08,073 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 16:47:08,074 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 16:47:08,074 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 16:47:08,074 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 16:47:08,075 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 16:47:08,075 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 16:47:08,076 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 16:47:08,076 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_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 17c1b3adab900925d0968acf284c9fae9bc7d0ec39197e53dc7bd6b93c5a8558 [2024-11-08 16:47:08,387 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 16:47:08,420 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 16:47:08,424 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 16:47:08,427 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 16:47:08,428 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 16:47:08,429 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c Unable to find full path for "g++" [2024-11-08 16:47:10,563 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 16:47:10,884 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 16:47:10,885 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-11-08 16:47:10,896 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/data/758c6aa78/9de6c75ecef2495090c66f69c901c7f5/FLAG5e99c2eac [2024-11-08 16:47:10,912 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/data/758c6aa78/9de6c75ecef2495090c66f69c901c7f5 [2024-11-08 16:47:10,915 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 16:47:10,916 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 16:47:10,917 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 16:47:10,918 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 16:47:10,923 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 16:47:10,924 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:47:10" (1/1) ... [2024-11-08 16:47:10,925 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d5301f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:47:10, skipping insertion in model container [2024-11-08 16:47:10,926 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:47:10" (1/1) ... [2024-11-08 16:47:10,970 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 16:47:11,234 WARN L250 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_b064229a-8ccd-4541-846b-8d3031fc5dfa/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4105,4118] [2024-11-08 16:47:11,258 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:47:11,282 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 16:47:11,323 WARN L250 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_b064229a-8ccd-4541-846b-8d3031fc5dfa/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4105,4118] [2024-11-08 16:47:11,341 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:47:11,369 INFO L204 MainTranslator]: Completed translation [2024-11-08 16:47:11,370 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:47:11 WrapperNode [2024-11-08 16:47:11,370 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 16:47:11,371 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 16:47:11,371 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 16:47:11,371 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 16:47:11,377 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:47:11" (1/1) ... [2024-11-08 16:47:11,386 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:47:11" (1/1) ... [2024-11-08 16:47:11,414 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 290 [2024-11-08 16:47:11,414 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 16:47:11,415 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 16:47:11,415 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 16:47:11,415 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 16:47:11,428 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:47:11" (1/1) ... [2024-11-08 16:47:11,428 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:47:11" (1/1) ... [2024-11-08 16:47:11,431 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:47:11" (1/1) ... [2024-11-08 16:47:11,452 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-08 16:47:11,452 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:47:11" (1/1) ... [2024-11-08 16:47:11,453 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:47:11" (1/1) ... [2024-11-08 16:47:11,459 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:47:11" (1/1) ... [2024-11-08 16:47:11,462 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:47:11" (1/1) ... [2024-11-08 16:47:11,465 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:47:11" (1/1) ... [2024-11-08 16:47:11,466 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:47:11" (1/1) ... [2024-11-08 16:47:11,474 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 16:47:11,475 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 16:47:11,475 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 16:47:11,478 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 16:47:11,480 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:47:11" (1/1) ... [2024-11-08 16:47:11,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:47:11,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:47:11,540 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 16:47:11,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 16:47:11,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 16:47:11,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 16:47:11,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 16:47:11,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 16:47:11,766 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 16:47:11,769 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 16:47:12,262 INFO L? ?]: Removed 29 outVars from TransFormulas that were not future-live. [2024-11-08 16:47:12,263 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 16:47:12,278 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 16:47:12,278 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 16:47:12,279 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:47:12 BoogieIcfgContainer [2024-11-08 16:47:12,279 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 16:47:12,283 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 16:47:12,283 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 16:47:12,287 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 16:47:12,287 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 04:47:10" (1/3) ... [2024-11-08 16:47:12,288 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3240fba4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:47:12, skipping insertion in model container [2024-11-08 16:47:12,289 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:47:11" (2/3) ... [2024-11-08 16:47:12,289 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3240fba4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:47:12, skipping insertion in model container [2024-11-08 16:47:12,289 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:47:12" (3/3) ... [2024-11-08 16:47:12,291 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-11-08 16:47:12,311 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 16:47:12,312 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 16:47:12,423 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:47:12,432 INFO L333 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, 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;@7937c592, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:47:12,432 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 16:47:12,437 INFO L276 IsEmpty]: Start isEmpty. Operand has 64 states, 62 states have (on average 1.6935483870967742) internal successors, (105), 63 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:47:12,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-08 16:47:12,445 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:47:12,445 INFO L215 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] [2024-11-08 16:47:12,446 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:47:12,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:47:12,454 INFO L85 PathProgramCache]: Analyzing trace with hash -976687966, now seen corresponding path program 1 times [2024-11-08 16:47:12,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:47:12,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713789190] [2024-11-08 16:47:12,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:47:12,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:47:12,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:47:12,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:47:12,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:47:12,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713789190] [2024-11-08 16:47:12,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713789190] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:47:12,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:47:12,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:47:12,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071030389] [2024-11-08 16:47:12,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:47:12,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:47:12,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:47:12,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:47:12,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:47:12,884 INFO L87 Difference]: Start difference. First operand has 64 states, 62 states have (on average 1.6935483870967742) internal successors, (105), 63 states have internal predecessors, (105), 0 states have call successors, (0), 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 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:47:12,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:47:12,936 INFO L93 Difference]: Finished difference Result 146 states and 230 transitions. [2024-11-08 16:47:12,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:47:12,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2024-11-08 16:47:12,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:47:12,953 INFO L225 Difference]: With dead ends: 146 [2024-11-08 16:47:12,953 INFO L226 Difference]: Without dead ends: 95 [2024-11-08 16:47:12,956 INFO L431 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 [2024-11-08 16:47:12,960 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 61 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 211 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 [2024-11-08 16:47:12,961 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 211 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:47:12,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-08 16:47:13,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 93. [2024-11-08 16:47:13,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.4782608695652173) internal successors, (136), 92 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:47:13,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 136 transitions. [2024-11-08 16:47:13,005 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 136 transitions. Word has length 37 [2024-11-08 16:47:13,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:47:13,005 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 136 transitions. [2024-11-08 16:47:13,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:47:13,006 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 136 transitions. [2024-11-08 16:47:13,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-08 16:47:13,007 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:47:13,008 INFO L215 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] [2024-11-08 16:47:13,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 16:47:13,008 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:47:13,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:47:13,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1572742836, now seen corresponding path program 1 times [2024-11-08 16:47:13,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:47:13,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933371592] [2024-11-08 16:47:13,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:47:13,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:47:13,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:47:13,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:47:13,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:47:13,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933371592] [2024-11-08 16:47:13,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933371592] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:47:13,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:47:13,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:47:13,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976952117] [2024-11-08 16:47:13,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:47:13,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:47:13,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:47:13,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:47:13,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:47:13,237 INFO L87 Difference]: Start difference. First operand 93 states and 136 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:47:13,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:47:13,273 INFO L93 Difference]: Finished difference Result 225 states and 344 transitions. [2024-11-08 16:47:13,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:47:13,274 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2024-11-08 16:47:13,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:47:13,275 INFO L225 Difference]: With dead ends: 225 [2024-11-08 16:47:13,276 INFO L226 Difference]: Without dead ends: 151 [2024-11-08 16:47:13,276 INFO L431 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 [2024-11-08 16:47:13,277 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 46 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 176 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 [2024-11-08 16:47:13,278 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 176 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:47:13,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-11-08 16:47:13,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 149. [2024-11-08 16:47:13,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.5135135135135136) internal successors, (224), 148 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:47:13,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 224 transitions. [2024-11-08 16:47:13,292 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 224 transitions. Word has length 38 [2024-11-08 16:47:13,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:47:13,292 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 224 transitions. [2024-11-08 16:47:13,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:47:13,293 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 224 transitions. [2024-11-08 16:47:13,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-08 16:47:13,293 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:47:13,294 INFO L215 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] [2024-11-08 16:47:13,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 16:47:13,294 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:47:13,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:47:13,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1624580866, now seen corresponding path program 1 times [2024-11-08 16:47:13,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:47:13,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088119734] [2024-11-08 16:47:13,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:47:13,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:47:13,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:47:13,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:47:13,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:47:13,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088119734] [2024-11-08 16:47:13,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088119734] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:47:13,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:47:13,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:47:13,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667109571] [2024-11-08 16:47:13,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:47:13,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:47:13,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:47:13,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:47:13,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:47:13,509 INFO L87 Difference]: Start difference. First operand 149 states and 224 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:47:13,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:47:13,760 INFO L93 Difference]: Finished difference Result 929 states and 1454 transitions. [2024-11-08 16:47:13,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 16:47:13,763 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2024-11-08 16:47:13,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:47:13,768 INFO L225 Difference]: With dead ends: 929 [2024-11-08 16:47:13,768 INFO L226 Difference]: Without dead ends: 799 [2024-11-08 16:47:13,770 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:47:13,771 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 410 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:47:13,772 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 575 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:47:13,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2024-11-08 16:47:13,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 277. [2024-11-08 16:47:13,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 1.5217391304347827) internal successors, (420), 276 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:47:13,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 420 transitions. [2024-11-08 16:47:13,842 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 420 transitions. Word has length 39 [2024-11-08 16:47:13,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:47:13,845 INFO L471 AbstractCegarLoop]: Abstraction has 277 states and 420 transitions. [2024-11-08 16:47:13,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:47:13,846 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 420 transitions. [2024-11-08 16:47:13,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-08 16:47:13,847 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:47:13,848 INFO L215 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] [2024-11-08 16:47:13,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 16:47:13,848 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:47:13,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:47:13,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1224060410, now seen corresponding path program 1 times [2024-11-08 16:47:13,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:47:13,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987791980] [2024-11-08 16:47:13,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:47:13,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:47:13,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:47:14,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:47:14,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:47:14,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987791980] [2024-11-08 16:47:14,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987791980] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:47:14,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:47:14,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:47:14,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813352563] [2024-11-08 16:47:14,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:47:14,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:47:14,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:47:14,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:47:14,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:47:14,031 INFO L87 Difference]: Start difference. First operand 277 states and 420 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:47:14,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:47:14,068 INFO L93 Difference]: Finished difference Result 749 states and 1146 transitions. [2024-11-08 16:47:14,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:47:14,069 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-08 16:47:14,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:47:14,072 INFO L225 Difference]: With dead ends: 749 [2024-11-08 16:47:14,072 INFO L226 Difference]: Without dead ends: 491 [2024-11-08 16:47:14,074 INFO L431 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 [2024-11-08 16:47:14,076 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 36 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:47:14,076 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 141 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:47:14,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2024-11-08 16:47:14,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 481. [2024-11-08 16:47:14,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 480 states have (on average 1.4916666666666667) internal successors, (716), 480 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:47:14,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 716 transitions. [2024-11-08 16:47:14,105 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 716 transitions. Word has length 41 [2024-11-08 16:47:14,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:47:14,106 INFO L471 AbstractCegarLoop]: Abstraction has 481 states and 716 transitions. [2024-11-08 16:47:14,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:47:14,107 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 716 transitions. [2024-11-08 16:47:14,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-08 16:47:14,111 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:47:14,112 INFO L215 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] [2024-11-08 16:47:14,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 16:47:14,112 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:47:14,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:47:14,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1245063065, now seen corresponding path program 1 times [2024-11-08 16:47:14,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:47:14,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937800655] [2024-11-08 16:47:14,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:47:14,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:47:14,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:47:14,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:47:14,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:47:14,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937800655] [2024-11-08 16:47:14,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937800655] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:47:14,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:47:14,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:47:14,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137174086] [2024-11-08 16:47:14,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:47:14,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:47:14,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:47:14,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:47:14,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:47:14,475 INFO L87 Difference]: Start difference. First operand 481 states and 716 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:47:14,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:47:14,601 INFO L93 Difference]: Finished difference Result 945 states and 1414 transitions. [2024-11-08 16:47:14,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:47:14,602 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-08 16:47:14,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:47:14,605 INFO L225 Difference]: With dead ends: 945 [2024-11-08 16:47:14,605 INFO L226 Difference]: Without dead ends: 483 [2024-11-08 16:47:14,608 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-08 16:47:14,609 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 46 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:47:14,613 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 266 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:47:14,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2024-11-08 16:47:14,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 481. [2024-11-08 16:47:14,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 480 states have (on average 1.475) internal successors, (708), 480 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:47:14,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 708 transitions. [2024-11-08 16:47:14,642 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 708 transitions. Word has length 41 [2024-11-08 16:47:14,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:47:14,643 INFO L471 AbstractCegarLoop]: Abstraction has 481 states and 708 transitions. [2024-11-08 16:47:14,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:47:14,643 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 708 transitions. [2024-11-08 16:47:14,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-08 16:47:14,645 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:47:14,648 INFO L215 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] [2024-11-08 16:47:14,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 16:47:14,649 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:47:14,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:47:14,650 INFO L85 PathProgramCache]: Analyzing trace with hash -59660072, now seen corresponding path program 1 times [2024-11-08 16:47:14,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:47:14,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501479520] [2024-11-08 16:47:14,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:47:14,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:47:14,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:47:14,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:47:14,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:47:14,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501479520] [2024-11-08 16:47:14,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501479520] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:47:14,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:47:14,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 16:47:14,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118144492] [2024-11-08 16:47:14,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:47:14,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:47:14,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:47:14,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:47:14,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:47:14,816 INFO L87 Difference]: Start difference. First operand 481 states and 708 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:47:14,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:47:14,921 INFO L93 Difference]: Finished difference Result 943 states and 1397 transitions. [2024-11-08 16:47:14,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:47:14,923 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2024-11-08 16:47:14,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:47:14,929 INFO L225 Difference]: With dead ends: 943 [2024-11-08 16:47:14,929 INFO L226 Difference]: Without dead ends: 481 [2024-11-08 16:47:14,930 INFO L431 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 [2024-11-08 16:47:14,931 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 222 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:47:14,932 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 56 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:47:14,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2024-11-08 16:47:14,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 481. [2024-11-08 16:47:14,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 480 states have (on average 1.4416666666666667) internal successors, (692), 480 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:47:14,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 692 transitions. [2024-11-08 16:47:14,947 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 692 transitions. Word has length 42 [2024-11-08 16:47:14,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:47:14,947 INFO L471 AbstractCegarLoop]: Abstraction has 481 states and 692 transitions. [2024-11-08 16:47:14,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:47:14,948 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 692 transitions. [2024-11-08 16:47:14,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-08 16:47:14,949 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:47:14,950 INFO L215 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] [2024-11-08 16:47:14,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 16:47:14,950 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:47:14,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:47:14,951 INFO L85 PathProgramCache]: Analyzing trace with hash 68425235, now seen corresponding path program 1 times [2024-11-08 16:47:14,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:47:14,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601812405] [2024-11-08 16:47:14,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:47:14,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:47:14,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:47:15,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:47:15,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:47:15,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601812405] [2024-11-08 16:47:15,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601812405] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:47:15,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:47:15,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 16:47:15,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586131552] [2024-11-08 16:47:15,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:47:15,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:47:15,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:47:15,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:47:15,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:47:15,088 INFO L87 Difference]: Start difference. First operand 481 states and 692 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:47:15,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:47:15,182 INFO L93 Difference]: Finished difference Result 943 states and 1365 transitions. [2024-11-08 16:47:15,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:47:15,183 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2024-11-08 16:47:15,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:47:15,185 INFO L225 Difference]: With dead ends: 943 [2024-11-08 16:47:15,186 INFO L226 Difference]: Without dead ends: 481 [2024-11-08 16:47:15,187 INFO L431 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 [2024-11-08 16:47:15,188 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 206 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:47:15,189 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 64 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:47:15,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2024-11-08 16:47:15,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 481. [2024-11-08 16:47:15,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 480 states have (on average 1.425) internal successors, (684), 480 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:47:15,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 684 transitions. [2024-11-08 16:47:15,203 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 684 transitions. Word has length 42 [2024-11-08 16:47:15,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:47:15,203 INFO L471 AbstractCegarLoop]: Abstraction has 481 states and 684 transitions. [2024-11-08 16:47:15,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:47:15,204 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 684 transitions. [2024-11-08 16:47:15,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-08 16:47:15,205 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:47:15,205 INFO L215 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] [2024-11-08 16:47:15,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 16:47:15,206 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:47:15,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:47:15,207 INFO L85 PathProgramCache]: Analyzing trace with hash 933957624, now seen corresponding path program 1 times [2024-11-08 16:47:15,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:47:15,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299843098] [2024-11-08 16:47:15,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:47:15,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:47:15,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:47:15,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:47:15,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:47:15,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299843098] [2024-11-08 16:47:15,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299843098] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:47:15,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:47:15,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:47:15,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933640377] [2024-11-08 16:47:15,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:47:15,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:47:15,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:47:15,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:47:15,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:47:15,533 INFO L87 Difference]: Start difference. First operand 481 states and 684 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:47:15,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:47:15,568 INFO L93 Difference]: Finished difference Result 499 states and 709 transitions. [2024-11-08 16:47:15,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:47:15,569 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2024-11-08 16:47:15,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:47:15,571 INFO L225 Difference]: With dead ends: 499 [2024-11-08 16:47:15,571 INFO L226 Difference]: Without dead ends: 497 [2024-11-08 16:47:15,572 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:47:15,573 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 0 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:47:15,574 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 309 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:47:15,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2024-11-08 16:47:15,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 497. [2024-11-08 16:47:15,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 496 states have (on average 1.403225806451613) internal successors, (696), 496 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:47:15,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 696 transitions. [2024-11-08 16:47:15,593 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 696 transitions. Word has length 42 [2024-11-08 16:47:15,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:47:15,594 INFO L471 AbstractCegarLoop]: Abstraction has 497 states and 696 transitions. [2024-11-08 16:47:15,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:47:15,594 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 696 transitions. [2024-11-08 16:47:15,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-08 16:47:15,599 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:47:15,599 INFO L215 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] [2024-11-08 16:47:15,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 16:47:15,600 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:47:15,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:47:15,600 INFO L85 PathProgramCache]: Analyzing trace with hash 883353381, now seen corresponding path program 1 times [2024-11-08 16:47:15,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:47:15,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305576483] [2024-11-08 16:47:15,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:47:15,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:47:15,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:47:15,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:47:15,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:47:15,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305576483] [2024-11-08 16:47:15,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305576483] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:47:15,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:47:15,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:47:15,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030269433] [2024-11-08 16:47:15,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:47:15,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:47:15,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:47:15,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:47:15,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:47:15,705 INFO L87 Difference]: Start difference. First operand 497 states and 696 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:47:15,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:47:15,731 INFO L93 Difference]: Finished difference Result 968 states and 1382 transitions. [2024-11-08 16:47:15,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:47:15,733 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2024-11-08 16:47:15,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:47:15,736 INFO L225 Difference]: With dead ends: 968 [2024-11-08 16:47:15,736 INFO L226 Difference]: Without dead ends: 693 [2024-11-08 16:47:15,737 INFO L431 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 [2024-11-08 16:47:15,739 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 51 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 184 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 [2024-11-08 16:47:15,742 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 184 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:47:15,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2024-11-08 16:47:15,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 691. [2024-11-08 16:47:15,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 690 states have (on average 1.4057971014492754) internal successors, (970), 690 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:47:15,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 970 transitions. [2024-11-08 16:47:15,770 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 970 transitions. Word has length 42 [2024-11-08 16:47:15,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:47:15,770 INFO L471 AbstractCegarLoop]: Abstraction has 691 states and 970 transitions. [2024-11-08 16:47:15,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:47:15,771 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 970 transitions. [2024-11-08 16:47:15,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-08 16:47:15,773 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:47:15,774 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:47:15,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 16:47:15,774 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:47:15,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:47:15,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1515661308, now seen corresponding path program 1 times [2024-11-08 16:47:15,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:47:15,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890030581] [2024-11-08 16:47:15,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:47:15,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:47:15,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:47:15,961 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 16:47:15,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:47:15,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890030581] [2024-11-08 16:47:15,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890030581] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:47:15,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:47:15,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:47:15,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552233615] [2024-11-08 16:47:15,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:47:15,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:47:15,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:47:15,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:47:15,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:47:15,968 INFO L87 Difference]: Start difference. First operand 691 states and 970 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:47:16,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:47:16,080 INFO L93 Difference]: Finished difference Result 2835 states and 4000 transitions. [2024-11-08 16:47:16,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:47:16,081 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-11-08 16:47:16,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:47:16,089 INFO L225 Difference]: With dead ends: 2835 [2024-11-08 16:47:16,089 INFO L226 Difference]: Without dead ends: 2165 [2024-11-08 16:47:16,091 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:47:16,092 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 225 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:47:16,094 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 334 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:47:16,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2165 states. [2024-11-08 16:47:16,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2165 to 1359. [2024-11-08 16:47:16,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1359 states, 1358 states have (on average 1.4035346097201766) internal successors, (1906), 1358 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:47:16,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 1906 transitions. [2024-11-08 16:47:16,139 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 1906 transitions. Word has length 61 [2024-11-08 16:47:16,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:47:16,140 INFO L471 AbstractCegarLoop]: Abstraction has 1359 states and 1906 transitions. [2024-11-08 16:47:16,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:47:16,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 1906 transitions. [2024-11-08 16:47:16,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-08 16:47:16,142 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:47:16,142 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:47:16,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 16:47:16,143 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:47:16,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:47:16,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1625359882, now seen corresponding path program 1 times [2024-11-08 16:47:16,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:47:16,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704526700] [2024-11-08 16:47:16,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:47:16,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:47:16,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:47:16,314 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-08 16:47:16,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:47:16,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704526700] [2024-11-08 16:47:16,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704526700] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:47:16,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:47:16,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:47:16,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043297077] [2024-11-08 16:47:16,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:47:16,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:47:16,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:47:16,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:47:16,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:47:16,317 INFO L87 Difference]: Start difference. First operand 1359 states and 1906 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:47:16,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:47:16,420 INFO L93 Difference]: Finished difference Result 3503 states and 4936 transitions. [2024-11-08 16:47:16,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:47:16,421 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 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 [2024-11-08 16:47:16,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:47:16,430 INFO L225 Difference]: With dead ends: 3503 [2024-11-08 16:47:16,430 INFO L226 Difference]: Without dead ends: 2833 [2024-11-08 16:47:16,432 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:47:16,433 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 219 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:47:16,433 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 366 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:47:16,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2833 states. [2024-11-08 16:47:16,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2833 to 2363. [2024-11-08 16:47:16,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2363 states, 2362 states have (on average 1.397121083827265) internal successors, (3300), 2362 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:47:16,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2363 states to 2363 states and 3300 transitions. [2024-11-08 16:47:16,492 INFO L78 Accepts]: Start accepts. Automaton has 2363 states and 3300 transitions. Word has length 61 [2024-11-08 16:47:16,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:47:16,493 INFO L471 AbstractCegarLoop]: Abstraction has 2363 states and 3300 transitions. [2024-11-08 16:47:16,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:47:16,493 INFO L276 IsEmpty]: Start isEmpty. Operand 2363 states and 3300 transitions. [2024-11-08 16:47:16,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-08 16:47:16,494 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:47:16,494 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 16:47:16,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-08 16:47:16,495 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:47:16,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:47:16,495 INFO L85 PathProgramCache]: Analyzing trace with hash -2114297975, now seen corresponding path program 1 times [2024-11-08 16:47:16,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:47:16,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450528305] [2024-11-08 16:47:16,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:47:16,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:47:16,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:47:16,636 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 16:47:16,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:47:16,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450528305] [2024-11-08 16:47:16,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450528305] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:47:16,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:47:16,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:47:16,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760114003] [2024-11-08 16:47:16,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:47:16,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:47:16,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:47:16,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:47:16,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:47:16,638 INFO L87 Difference]: Start difference. First operand 2363 states and 3300 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 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) [2024-11-08 16:47:16,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:47:16,731 INFO L93 Difference]: Finished difference Result 3763 states and 5320 transitions. [2024-11-08 16:47:16,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:47:16,732 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 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 62 [2024-11-08 16:47:16,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:47:16,742 INFO L225 Difference]: With dead ends: 3763 [2024-11-08 16:47:16,742 INFO L226 Difference]: Without dead ends: 3297 [2024-11-08 16:47:16,744 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:47:16,744 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 211 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:47:16,745 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 343 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:47:16,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3297 states. [2024-11-08 16:47:16,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3297 to 2827. [2024-11-08 16:47:16,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2827 states, 2826 states have (on average 1.402689313517339) internal successors, (3964), 2826 states have internal predecessors, (3964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:47:16,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2827 states to 2827 states and 3964 transitions. [2024-11-08 16:47:16,838 INFO L78 Accepts]: Start accepts. Automaton has 2827 states and 3964 transitions. Word has length 62 [2024-11-08 16:47:16,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:47:16,838 INFO L471 AbstractCegarLoop]: Abstraction has 2827 states and 3964 transitions. [2024-11-08 16:47:16,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 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) [2024-11-08 16:47:16,838 INFO L276 IsEmpty]: Start isEmpty. Operand 2827 states and 3964 transitions. [2024-11-08 16:47:16,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-08 16:47:16,839 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:47:16,840 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:47:16,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-08 16:47:16,840 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:47:16,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:47:16,840 INFO L85 PathProgramCache]: Analyzing trace with hash -344216809, now seen corresponding path program 1 times [2024-11-08 16:47:16,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:47:16,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225471791] [2024-11-08 16:47:16,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:47:16,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:47:16,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:47:16,977 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:47:16,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:47:16,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225471791] [2024-11-08 16:47:16,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225471791] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:47:16,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:47:16,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:47:16,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48129292] [2024-11-08 16:47:16,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:47:16,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:47:16,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:47:16,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:47:16,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:47:16,981 INFO L87 Difference]: Start difference. First operand 2827 states and 3964 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) [2024-11-08 16:47:17,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:47:17,017 INFO L93 Difference]: Finished difference Result 4945 states and 6985 transitions. [2024-11-08 16:47:17,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:47:17,018 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 [2024-11-08 16:47:17,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:47:17,025 INFO L225 Difference]: With dead ends: 4945 [2024-11-08 16:47:17,025 INFO L226 Difference]: Without dead ends: 2139 [2024-11-08 16:47:17,028 INFO L431 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 [2024-11-08 16:47:17,030 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 39 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:47:17,031 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 174 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:47:17,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2139 states. [2024-11-08 16:47:17,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2139 to 2137. [2024-11-08 16:47:17,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2137 states, 2136 states have (on average 1.4063670411985019) internal successors, (3004), 2136 states have internal predecessors, (3004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:47:17,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2137 states to 2137 states and 3004 transitions. [2024-11-08 16:47:17,082 INFO L78 Accepts]: Start accepts. Automaton has 2137 states and 3004 transitions. Word has length 63 [2024-11-08 16:47:17,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:47:17,082 INFO L471 AbstractCegarLoop]: Abstraction has 2137 states and 3004 transitions. [2024-11-08 16:47:17,082 INFO L472 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) [2024-11-08 16:47:17,083 INFO L276 IsEmpty]: Start isEmpty. Operand 2137 states and 3004 transitions. [2024-11-08 16:47:17,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-08 16:47:17,084 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:47:17,084 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:47:17,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-08 16:47:17,084 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:47:17,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:47:17,085 INFO L85 PathProgramCache]: Analyzing trace with hash -2058333971, now seen corresponding path program 1 times [2024-11-08 16:47:17,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:47:17,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906852868] [2024-11-08 16:47:17,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:47:17,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:47:17,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:47:17,606 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:47:17,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:47:17,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906852868] [2024-11-08 16:47:17,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906852868] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:47:17,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228282806] [2024-11-08 16:47:17,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:47:17,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:47:17,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:47:17,610 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:47:17,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 16:47:17,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:47:17,779 INFO L255 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-08 16:47:17,789 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:47:18,648 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:47:18,648 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:47:19,574 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:47:19,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228282806] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:47:19,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:47:19,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-08 16:47:19,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132893985] [2024-11-08 16:47:19,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:47:19,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-08 16:47:19,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:47:19,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-08 16:47:19,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2024-11-08 16:47:19,578 INFO L87 Difference]: Start difference. First operand 2137 states and 3004 transitions. Second operand has 25 states, 25 states have (on average 6.48) internal successors, (162), 24 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:47:24,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:47:24,173 INFO L93 Difference]: Finished difference Result 17188 states and 24016 transitions. [2024-11-08 16:47:24,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2024-11-08 16:47:24,174 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 6.48) internal successors, (162), 24 states have internal predecessors, (162), 0 states have call successors, (0), 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 [2024-11-08 16:47:24,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:47:24,238 INFO L225 Difference]: With dead ends: 17188 [2024-11-08 16:47:24,240 INFO L226 Difference]: Without dead ends: 15086 [2024-11-08 16:47:24,248 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2506 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1583, Invalid=7537, Unknown=0, NotChecked=0, Total=9120 [2024-11-08 16:47:24,249 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 2812 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 1629 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2812 SdHoareTripleChecker+Valid, 1030 SdHoareTripleChecker+Invalid, 1662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-08 16:47:24,250 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2812 Valid, 1030 Invalid, 1662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1629 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-08 16:47:24,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15086 states. [2024-11-08 16:47:24,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15086 to 10642. [2024-11-08 16:47:24,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10642 states, 10641 states have (on average 1.3895310591109857) internal successors, (14786), 10641 states have internal predecessors, (14786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:47:24,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10642 states to 10642 states and 14786 transitions. [2024-11-08 16:47:24,578 INFO L78 Accepts]: Start accepts. Automaton has 10642 states and 14786 transitions. Word has length 63 [2024-11-08 16:47:24,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:47:24,578 INFO L471 AbstractCegarLoop]: Abstraction has 10642 states and 14786 transitions. [2024-11-08 16:47:24,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.48) internal successors, (162), 24 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:47:24,578 INFO L276 IsEmpty]: Start isEmpty. Operand 10642 states and 14786 transitions. [2024-11-08 16:47:24,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-08 16:47:24,580 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:47:24,580 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 16:47:24,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 16:47:24,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-08 16:47:24,784 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:47:24,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:47:24,784 INFO L85 PathProgramCache]: Analyzing trace with hash 2139757523, now seen corresponding path program 1 times [2024-11-08 16:47:24,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:47:24,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863450735] [2024-11-08 16:47:24,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:47:24,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:47:24,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:47:25,239 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:47:25,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:47:25,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863450735] [2024-11-08 16:47:25,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863450735] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:47:25,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776764418] [2024-11-08 16:47:25,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:47:25,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:47:25,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:47:25,242 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:47:25,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 16:47:25,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:47:25,415 INFO L255 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-08 16:47:25,420 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:47:27,424 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:47:27,424 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:47:29,093 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:47:29,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776764418] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:47:29,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:47:29,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 15, 17] total 36 [2024-11-08 16:47:29,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365444316] [2024-11-08 16:47:29,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:47:29,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-08 16:47:29,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:47:29,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-08 16:47:29,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=1030, Unknown=0, NotChecked=0, Total=1260 [2024-11-08 16:47:29,097 INFO L87 Difference]: Start difference. First operand 10642 states and 14786 transitions. Second operand has 36 states, 36 states have (on average 4.861111111111111) internal successors, (175), 36 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:47:42,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:47:42,696 INFO L93 Difference]: Finished difference Result 86584 states and 119048 transitions. [2024-11-08 16:47:42,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2024-11-08 16:47:42,697 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.861111111111111) internal successors, (175), 36 states have internal predecessors, (175), 0 states have call successors, (0), 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 [2024-11-08 16:47:42,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:47:42,852 INFO L225 Difference]: With dead ends: 86584 [2024-11-08 16:47:42,853 INFO L226 Difference]: Without dead ends: 76034 [2024-11-08 16:47:42,887 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21157 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=8899, Invalid=39281, Unknown=0, NotChecked=0, Total=48180 [2024-11-08 16:47:42,888 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 6423 mSDsluCounter, 1203 mSDsCounter, 0 mSdLazyCounter, 2524 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6423 SdHoareTripleChecker+Valid, 1294 SdHoareTripleChecker+Invalid, 2648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 2524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-08 16:47:42,889 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6423 Valid, 1294 Invalid, 2648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 2524 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-08 16:47:42,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76034 states. [2024-11-08 16:47:43,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76034 to 44430. [2024-11-08 16:47:43,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44430 states, 44429 states have (on average 1.3846361610659703) internal successors, (61518), 44429 states have internal predecessors, (61518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:47:44,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44430 states to 44430 states and 61518 transitions. [2024-11-08 16:47:44,026 INFO L78 Accepts]: Start accepts. Automaton has 44430 states and 61518 transitions. Word has length 64 [2024-11-08 16:47:44,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:47:44,026 INFO L471 AbstractCegarLoop]: Abstraction has 44430 states and 61518 transitions. [2024-11-08 16:47:44,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 4.861111111111111) internal successors, (175), 36 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:47:44,027 INFO L276 IsEmpty]: Start isEmpty. Operand 44430 states and 61518 transitions. [2024-11-08 16:47:44,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-08 16:47:44,029 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:47:44,030 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:47:44,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 16:47:44,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-08 16:47:44,234 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:47:44,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:47:44,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1508040122, now seen corresponding path program 1 times [2024-11-08 16:47:44,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:47:44,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881212410] [2024-11-08 16:47:44,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:47:44,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:47:44,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:47:44,361 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:47:44,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:47:44,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881212410] [2024-11-08 16:47:44,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881212410] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:47:44,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:47:44,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:47:44,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937041703] [2024-11-08 16:47:44,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:47:44,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:47:44,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:47:44,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:47:44,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:47:44,489 INFO L87 Difference]: Start difference. First operand 44430 states and 61518 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:47:44,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:47:44,725 INFO L93 Difference]: Finished difference Result 69436 states and 96260 transitions. [2024-11-08 16:47:44,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:47:44,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2024-11-08 16:47:44,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:47:44,764 INFO L225 Difference]: With dead ends: 69436 [2024-11-08 16:47:44,764 INFO L226 Difference]: Without dead ends: 25154 [2024-11-08 16:47:44,953 INFO L431 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 [2024-11-08 16:47:44,954 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 30 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:47:44,954 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 159 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:47:44,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25154 states. [2024-11-08 16:47:45,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25154 to 25152. [2024-11-08 16:47:45,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25152 states, 25151 states have (on average 1.3616953600254462) internal successors, (34248), 25151 states have internal predecessors, (34248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:47:45,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25152 states to 25152 states and 34248 transitions. [2024-11-08 16:47:45,547 INFO L78 Accepts]: Start accepts. Automaton has 25152 states and 34248 transitions. Word has length 65 [2024-11-08 16:47:45,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:47:45,548 INFO L471 AbstractCegarLoop]: Abstraction has 25152 states and 34248 transitions. [2024-11-08 16:47:45,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:47:45,550 INFO L276 IsEmpty]: Start isEmpty. Operand 25152 states and 34248 transitions. [2024-11-08 16:47:45,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-08 16:47:45,553 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:47:45,554 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 16:47:45,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-08 16:47:45,554 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:47:45,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:47:45,555 INFO L85 PathProgramCache]: Analyzing trace with hash 76199226, now seen corresponding path program 1 times [2024-11-08 16:47:45,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:47:45,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787767761] [2024-11-08 16:47:45,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:47:45,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:47:45,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:47:46,511 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:47:46,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:47:46,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787767761] [2024-11-08 16:47:46,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787767761] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:47:46,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868760064] [2024-11-08 16:47:46,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:47:46,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:47:46,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:47:46,514 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:47:46,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 16:47:46,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:47:46,673 INFO L255 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-08 16:47:46,676 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:47:47,971 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:47:47,971 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:47:49,517 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:47:49,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868760064] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:47:49,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:47:49,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17, 17] total 43 [2024-11-08 16:47:49,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503764365] [2024-11-08 16:47:49,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:47:49,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-08 16:47:49,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:47:49,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-08 16:47:49,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=1624, Unknown=0, NotChecked=0, Total=1806 [2024-11-08 16:47:49,521 INFO L87 Difference]: Start difference. First operand 25152 states and 34248 transitions. Second operand has 43 states, 43 states have (on average 4.209302325581396) internal successors, (181), 43 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:48:09,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:48:09,113 INFO L93 Difference]: Finished difference Result 62532 states and 85111 transitions. [2024-11-08 16:48:09,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2024-11-08 16:48:09,114 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 4.209302325581396) internal successors, (181), 43 states have internal predecessors, (181), 0 states have call successors, (0), 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 65 [2024-11-08 16:48:09,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:48:09,187 INFO L225 Difference]: With dead ends: 62532 [2024-11-08 16:48:09,187 INFO L226 Difference]: Without dead ends: 45862 [2024-11-08 16:48:09,209 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18032 ImplicationChecksByTransitivity, 17.7s TimeCoverageRelationStatistics Valid=6503, Invalid=43897, Unknown=0, NotChecked=0, Total=50400 [2024-11-08 16:48:09,209 INFO L432 NwaCegarLoop]: 212 mSDtfsCounter, 5061 mSDsluCounter, 4413 mSDsCounter, 0 mSdLazyCounter, 3154 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5061 SdHoareTripleChecker+Valid, 4625 SdHoareTripleChecker+Invalid, 3195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 3154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-08 16:48:09,210 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5061 Valid, 4625 Invalid, 3195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 3154 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-08 16:48:09,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45862 states. [2024-11-08 16:48:09,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45862 to 29070. [2024-11-08 16:48:09,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29070 states, 29069 states have (on average 1.3644432213010425) internal successors, (39663), 29069 states have internal predecessors, (39663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:48:09,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29070 states to 29070 states and 39663 transitions. [2024-11-08 16:48:09,678 INFO L78 Accepts]: Start accepts. Automaton has 29070 states and 39663 transitions. Word has length 65 [2024-11-08 16:48:09,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:48:09,679 INFO L471 AbstractCegarLoop]: Abstraction has 29070 states and 39663 transitions. [2024-11-08 16:48:09,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 4.209302325581396) internal successors, (181), 43 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:48:09,679 INFO L276 IsEmpty]: Start isEmpty. Operand 29070 states and 39663 transitions. [2024-11-08 16:48:09,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-08 16:48:09,684 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:48:09,685 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:48:09,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-08 16:48:09,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-08 16:48:09,888 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:48:09,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:48:09,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1000094856, now seen corresponding path program 1 times [2024-11-08 16:48:09,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:48:09,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051994208] [2024-11-08 16:48:09,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:48:09,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:48:09,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:48:10,089 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:48:10,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:48:10,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051994208] [2024-11-08 16:48:10,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051994208] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:48:10,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:48:10,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:48:10,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467248963] [2024-11-08 16:48:10,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:48:10,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:48:10,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:48:10,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:48:10,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:48:10,092 INFO L87 Difference]: Start difference. First operand 29070 states and 39663 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) [2024-11-08 16:48:10,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:48:10,220 INFO L93 Difference]: Finished difference Result 47050 states and 64097 transitions. [2024-11-08 16:48:10,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:48:10,221 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 [2024-11-08 16:48:10,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:48:10,246 INFO L225 Difference]: With dead ends: 47050 [2024-11-08 16:48:10,246 INFO L226 Difference]: Without dead ends: 18128 [2024-11-08 16:48:10,263 INFO L431 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 [2024-11-08 16:48:10,264 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 24 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:48:10,264 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 144 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:48:10,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18128 states. [2024-11-08 16:48:10,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18128 to 18126. [2024-11-08 16:48:10,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18126 states, 18125 states have (on average 1.3390344827586207) internal successors, (24270), 18125 states have internal predecessors, (24270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:48:10,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18126 states to 18126 states and 24270 transitions. [2024-11-08 16:48:10,635 INFO L78 Accepts]: Start accepts. Automaton has 18126 states and 24270 transitions. Word has length 66 [2024-11-08 16:48:10,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:48:10,636 INFO L471 AbstractCegarLoop]: Abstraction has 18126 states and 24270 transitions. [2024-11-08 16:48:10,636 INFO L472 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) [2024-11-08 16:48:10,636 INFO L276 IsEmpty]: Start isEmpty. Operand 18126 states and 24270 transitions. [2024-11-08 16:48:10,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-08 16:48:10,638 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:48:10,639 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:48:10,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-08 16:48:10,640 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:48:10,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:48:10,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1535675016, now seen corresponding path program 1 times [2024-11-08 16:48:10,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:48:10,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253745026] [2024-11-08 16:48:10,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:48:10,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:48:10,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:48:10,816 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 16:48:10,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:48:10,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253745026] [2024-11-08 16:48:10,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253745026] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:48:10,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633669284] [2024-11-08 16:48:10,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:48:10,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:48:10,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:48:10,820 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:48:10,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 16:48:10,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:48:10,997 INFO L255 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-08 16:48:11,002 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:48:11,267 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:48:11,267 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:48:11,570 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:48:11,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633669284] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:48:11,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:48:11,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 11 [2024-11-08 16:48:11,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148733163] [2024-11-08 16:48:11,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:48:11,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 16:48:11,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:48:11,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 16:48:11,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-08 16:48:11,572 INFO L87 Difference]: Start difference. First operand 18126 states and 24270 transitions. Second operand has 11 states, 11 states have (on average 13.636363636363637) internal successors, (150), 11 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:48:11,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:48:11,927 INFO L93 Difference]: Finished difference Result 70427 states and 93758 transitions. [2024-11-08 16:48:11,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 16:48:11,928 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.636363636363637) internal successors, (150), 11 states have internal predecessors, (150), 0 states have call successors, (0), 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 [2024-11-08 16:48:11,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:48:11,990 INFO L225 Difference]: With dead ends: 70427 [2024-11-08 16:48:11,990 INFO L226 Difference]: Without dead ends: 51769 [2024-11-08 16:48:12,011 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2024-11-08 16:48:12,012 INFO L432 NwaCegarLoop]: 159 mSDtfsCounter, 297 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 16:48:12,012 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 766 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 16:48:12,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51769 states. [2024-11-08 16:48:12,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51769 to 51277. [2024-11-08 16:48:12,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51277 states, 51276 states have (on average 1.290525782042281) internal successors, (66173), 51276 states have internal predecessors, (66173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:48:12,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51277 states to 51277 states and 66173 transitions. [2024-11-08 16:48:12,997 INFO L78 Accepts]: Start accepts. Automaton has 51277 states and 66173 transitions. Word has length 66 [2024-11-08 16:48:12,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:48:12,997 INFO L471 AbstractCegarLoop]: Abstraction has 51277 states and 66173 transitions. [2024-11-08 16:48:12,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.636363636363637) internal successors, (150), 11 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:48:12,998 INFO L276 IsEmpty]: Start isEmpty. Operand 51277 states and 66173 transitions. [2024-11-08 16:48:12,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-08 16:48:12,999 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:48:12,999 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 16:48:13,056 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 16:48:13,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:48:13,200 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:48:13,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:48:13,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1707252983, now seen corresponding path program 1 times [2024-11-08 16:48:13,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:48:13,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53106862] [2024-11-08 16:48:13,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:48:13,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:48:13,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:48:13,251 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 16:48:13,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:48:13,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53106862] [2024-11-08 16:48:13,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53106862] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:48:13,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:48:13,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:48:13,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344466391] [2024-11-08 16:48:13,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:48:13,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:48:13,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:48:13,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:48:13,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:48:13,428 INFO L87 Difference]: Start difference. First operand 51277 states and 66173 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) [2024-11-08 16:48:13,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:48:13,675 INFO L93 Difference]: Finished difference Result 81977 states and 105738 transitions. [2024-11-08 16:48:13,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:48:13,676 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 66 [2024-11-08 16:48:13,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:48:13,704 INFO L225 Difference]: With dead ends: 81977 [2024-11-08 16:48:13,704 INFO L226 Difference]: Without dead ends: 31685 [2024-11-08 16:48:13,730 INFO L431 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 [2024-11-08 16:48:13,731 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 45 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:48:13,731 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 85 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:48:13,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31685 states. [2024-11-08 16:48:14,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31685 to 31685. [2024-11-08 16:48:14,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31685 states, 31684 states have (on average 1.265907082439086) internal successors, (40109), 31684 states have internal predecessors, (40109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:48:14,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31685 states to 31685 states and 40109 transitions. [2024-11-08 16:48:14,380 INFO L78 Accepts]: Start accepts. Automaton has 31685 states and 40109 transitions. Word has length 66 [2024-11-08 16:48:14,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:48:14,380 INFO L471 AbstractCegarLoop]: Abstraction has 31685 states and 40109 transitions. [2024-11-08 16:48:14,380 INFO L472 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) [2024-11-08 16:48:14,380 INFO L276 IsEmpty]: Start isEmpty. Operand 31685 states and 40109 transitions. [2024-11-08 16:48:14,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-08 16:48:14,381 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:48:14,381 INFO L215 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] [2024-11-08 16:48:14,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-08 16:48:14,382 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:48:14,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:48:14,382 INFO L85 PathProgramCache]: Analyzing trace with hash 142443222, now seen corresponding path program 1 times [2024-11-08 16:48:14,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:48:14,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945351498] [2024-11-08 16:48:14,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:48:14,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:48:14,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:48:14,443 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 16:48:14,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:48:14,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945351498] [2024-11-08 16:48:14,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945351498] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:48:14,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:48:14,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:48:14,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047698670] [2024-11-08 16:48:14,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:48:14,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:48:14,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:48:14,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:48:14,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:48:14,446 INFO L87 Difference]: Start difference. First operand 31685 states and 40109 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) [2024-11-08 16:48:14,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:48:14,607 INFO L93 Difference]: Finished difference Result 53012 states and 66943 transitions. [2024-11-08 16:48:14,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:48:14,608 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 67 [2024-11-08 16:48:14,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:48:14,632 INFO L225 Difference]: With dead ends: 53012 [2024-11-08 16:48:14,632 INFO L226 Difference]: Without dead ends: 21401 [2024-11-08 16:48:14,783 INFO L431 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 [2024-11-08 16:48:14,784 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 46 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:48:14,784 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 76 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:48:14,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21401 states. [2024-11-08 16:48:14,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21401 to 21401. [2024-11-08 16:48:14,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21401 states, 21400 states have (on average 1.2339719626168224) internal successors, (26407), 21400 states have internal predecessors, (26407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:48:14,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21401 states to 21401 states and 26407 transitions. [2024-11-08 16:48:14,979 INFO L78 Accepts]: Start accepts. Automaton has 21401 states and 26407 transitions. Word has length 67 [2024-11-08 16:48:14,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:48:14,979 INFO L471 AbstractCegarLoop]: Abstraction has 21401 states and 26407 transitions. [2024-11-08 16:48:14,979 INFO L472 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) [2024-11-08 16:48:14,979 INFO L276 IsEmpty]: Start isEmpty. Operand 21401 states and 26407 transitions. [2024-11-08 16:48:14,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-08 16:48:14,980 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:48:14,980 INFO L215 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] [2024-11-08 16:48:14,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-08 16:48:14,980 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:48:14,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:48:14,981 INFO L85 PathProgramCache]: Analyzing trace with hash 404521601, now seen corresponding path program 1 times [2024-11-08 16:48:14,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:48:14,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357554636] [2024-11-08 16:48:14,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:48:14,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:48:15,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:48:15,170 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 16:48:15,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:48:15,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357554636] [2024-11-08 16:48:15,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357554636] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:48:15,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:48:15,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:48:15,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556552531] [2024-11-08 16:48:15,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:48:15,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:48:15,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:48:15,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:48:15,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:48:15,173 INFO L87 Difference]: Start difference. First operand 21401 states and 26407 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) [2024-11-08 16:48:15,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:48:15,272 INFO L93 Difference]: Finished difference Result 32818 states and 40597 transitions. [2024-11-08 16:48:15,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:48:15,273 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 67 [2024-11-08 16:48:15,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:48:15,285 INFO L225 Difference]: With dead ends: 32818 [2024-11-08 16:48:15,285 INFO L226 Difference]: Without dead ends: 11604 [2024-11-08 16:48:15,294 INFO L431 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 [2024-11-08 16:48:15,295 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 44 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:48:15,297 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 88 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:48:15,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11604 states. [2024-11-08 16:48:15,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11604 to 11604. [2024-11-08 16:48:15,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11604 states, 11603 states have (on average 1.219426010514522) internal successors, (14149), 11603 states have internal predecessors, (14149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:48:15,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11604 states to 11604 states and 14149 transitions. [2024-11-08 16:48:15,425 INFO L78 Accepts]: Start accepts. Automaton has 11604 states and 14149 transitions. Word has length 67 [2024-11-08 16:48:15,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:48:15,425 INFO L471 AbstractCegarLoop]: Abstraction has 11604 states and 14149 transitions. [2024-11-08 16:48:15,425 INFO L472 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) [2024-11-08 16:48:15,425 INFO L276 IsEmpty]: Start isEmpty. Operand 11604 states and 14149 transitions. [2024-11-08 16:48:15,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-08 16:48:15,429 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:48:15,429 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:48:15,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-08 16:48:15,430 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:48:15,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:48:15,430 INFO L85 PathProgramCache]: Analyzing trace with hash -539067345, now seen corresponding path program 1 times [2024-11-08 16:48:15,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:48:15,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701576486] [2024-11-08 16:48:15,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:48:15,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:48:15,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:48:16,823 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 28 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:48:16,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:48:16,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701576486] [2024-11-08 16:48:16,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701576486] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:48:16,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565058824] [2024-11-08 16:48:16,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:48:16,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:48:16,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:48:16,825 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:48:16,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 16:48:16,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:48:16,961 INFO L255 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-08 16:48:16,963 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:48:17,764 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 30 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:48:17,764 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:48:19,616 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 28 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:48:19,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565058824] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:48:19,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:48:19,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11, 11] total 31 [2024-11-08 16:48:19,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009874229] [2024-11-08 16:48:19,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:48:19,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-08 16:48:19,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:48:19,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-08 16:48:19,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=877, Unknown=0, NotChecked=0, Total=992 [2024-11-08 16:48:19,619 INFO L87 Difference]: Start difference. First operand 11604 states and 14149 transitions. Second operand has 32 states, 32 states have (on average 8.25) internal successors, (264), 31 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:48:23,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:48:23,590 INFO L93 Difference]: Finished difference Result 21553 states and 26658 transitions. [2024-11-08 16:48:23,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-08 16:48:23,591 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 8.25) internal successors, (264), 31 states have internal predecessors, (264), 0 states have call successors, (0), 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 110 [2024-11-08 16:48:23,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:48:23,605 INFO L225 Difference]: With dead ends: 21553 [2024-11-08 16:48:23,605 INFO L226 Difference]: Without dead ends: 15758 [2024-11-08 16:48:23,610 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1680 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1252, Invalid=5888, Unknown=0, NotChecked=0, Total=7140 [2024-11-08 16:48:23,611 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 2109 mSDsluCounter, 1332 mSDsCounter, 0 mSdLazyCounter, 1427 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2109 SdHoareTripleChecker+Valid, 1436 SdHoareTripleChecker+Invalid, 1482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:48:23,611 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2109 Valid, 1436 Invalid, 1482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1427 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-08 16:48:23,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15758 states. [2024-11-08 16:48:23,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15758 to 6825. [2024-11-08 16:48:23,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6825 states, 6824 states have (on average 1.2121922626025792) internal successors, (8272), 6824 states have internal predecessors, (8272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:48:23,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6825 states to 6825 states and 8272 transitions. [2024-11-08 16:48:23,708 INFO L78 Accepts]: Start accepts. Automaton has 6825 states and 8272 transitions. Word has length 110 [2024-11-08 16:48:23,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:48:23,709 INFO L471 AbstractCegarLoop]: Abstraction has 6825 states and 8272 transitions. [2024-11-08 16:48:23,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 8.25) internal successors, (264), 31 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:48:23,709 INFO L276 IsEmpty]: Start isEmpty. Operand 6825 states and 8272 transitions. [2024-11-08 16:48:23,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-08 16:48:23,710 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:48:23,711 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:48:23,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-08 16:48:23,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-08 16:48:23,912 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:48:23,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:48:23,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1785934306, now seen corresponding path program 1 times [2024-11-08 16:48:23,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:48:23,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210409987] [2024-11-08 16:48:23,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:48:23,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:48:23,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:48:24,634 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 31 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:48:24,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:48:24,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210409987] [2024-11-08 16:48:24,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210409987] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:48:24,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860001742] [2024-11-08 16:48:24,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:48:24,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:48:24,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:48:24,637 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:48:24,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 16:48:24,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:48:24,809 INFO L255 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-08 16:48:24,812 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:48:25,564 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 35 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:48:25,564 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:48:27,274 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 31 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:48:27,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860001742] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:48:27,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:48:27,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2024-11-08 16:48:27,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102224272] [2024-11-08 16:48:27,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:48:27,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-08 16:48:27,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:48:27,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-08 16:48:27,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2024-11-08 16:48:27,276 INFO L87 Difference]: Start difference. First operand 6825 states and 8272 transitions. Second operand has 26 states, 26 states have (on average 9.73076923076923) internal successors, (253), 25 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) [2024-11-08 16:48:27,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:48:27,866 INFO L93 Difference]: Finished difference Result 10800 states and 13198 transitions. [2024-11-08 16:48:27,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 16:48:27,867 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 9.73076923076923) internal successors, (253), 25 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 110 [2024-11-08 16:48:27,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:48:27,871 INFO L225 Difference]: With dead ends: 10800 [2024-11-08 16:48:27,871 INFO L226 Difference]: Without dead ends: 6742 [2024-11-08 16:48:27,873 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=281, Invalid=1125, Unknown=0, NotChecked=0, Total=1406 [2024-11-08 16:48:27,873 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 388 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 16:48:27,874 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 679 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 16:48:27,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6742 states. [2024-11-08 16:48:27,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6742 to 6738. [2024-11-08 16:48:27,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6738 states, 6737 states have (on average 1.1932610954430756) internal successors, (8039), 6737 states have internal predecessors, (8039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:48:27,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6738 states to 6738 states and 8039 transitions. [2024-11-08 16:48:27,930 INFO L78 Accepts]: Start accepts. Automaton has 6738 states and 8039 transitions. Word has length 110 [2024-11-08 16:48:27,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:48:27,930 INFO L471 AbstractCegarLoop]: Abstraction has 6738 states and 8039 transitions. [2024-11-08 16:48:27,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.73076923076923) internal successors, (253), 25 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) [2024-11-08 16:48:27,930 INFO L276 IsEmpty]: Start isEmpty. Operand 6738 states and 8039 transitions. [2024-11-08 16:48:27,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-08 16:48:27,932 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:48:27,933 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:48:27,959 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 16:48:28,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-08 16:48:28,133 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:48:28,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:48:28,134 INFO L85 PathProgramCache]: Analyzing trace with hash -590516994, now seen corresponding path program 1 times [2024-11-08 16:48:28,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:48:28,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116001668] [2024-11-08 16:48:28,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:48:28,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:48:28,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:48:30,130 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 13 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:48:30,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:48:30,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116001668] [2024-11-08 16:48:30,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116001668] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:48:30,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654524678] [2024-11-08 16:48:30,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:48:30,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:48:30,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:48:30,133 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:48:30,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 16:48:30,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:48:30,350 INFO L255 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-08 16:48:30,357 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:48:33,617 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 13 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:48:33,617 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:48:36,807 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 13 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:48:36,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654524678] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:48:36,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:48:36,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 18, 18] total 55 [2024-11-08 16:48:36,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699886081] [2024-11-08 16:48:36,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:48:36,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-08 16:48:36,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:48:36,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-08 16:48:36,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=2789, Unknown=0, NotChecked=0, Total=2970 [2024-11-08 16:48:36,810 INFO L87 Difference]: Start difference. First operand 6738 states and 8039 transitions. Second operand has 55 states, 55 states have (on average 5.745454545454545) internal successors, (316), 55 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:48:51,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:48:51,752 INFO L93 Difference]: Finished difference Result 21051 states and 25484 transitions. [2024-11-08 16:48:51,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2024-11-08 16:48:51,753 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 5.745454545454545) internal successors, (316), 55 states have internal predecessors, (316), 0 states have call successors, (0), 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 111 [2024-11-08 16:48:51,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:48:51,767 INFO L225 Difference]: With dead ends: 21051 [2024-11-08 16:48:51,767 INFO L226 Difference]: Without dead ends: 18064 [2024-11-08 16:48:51,775 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8346 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=2946, Invalid=29274, Unknown=0, NotChecked=0, Total=32220 [2024-11-08 16:48:51,775 INFO L432 NwaCegarLoop]: 299 mSDtfsCounter, 2020 mSDsluCounter, 9872 mSDsCounter, 0 mSdLazyCounter, 5904 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2020 SdHoareTripleChecker+Valid, 10171 SdHoareTripleChecker+Invalid, 5939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 5904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-08 16:48:51,776 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2020 Valid, 10171 Invalid, 5939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 5904 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-08 16:48:51,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18064 states. [2024-11-08 16:48:51,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18064 to 13982. [2024-11-08 16:48:51,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13982 states, 13981 states have (on average 1.2007009512910378) internal successors, (16787), 13981 states have internal predecessors, (16787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:48:51,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13982 states to 13982 states and 16787 transitions. [2024-11-08 16:48:51,921 INFO L78 Accepts]: Start accepts. Automaton has 13982 states and 16787 transitions. Word has length 111 [2024-11-08 16:48:51,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:48:51,921 INFO L471 AbstractCegarLoop]: Abstraction has 13982 states and 16787 transitions. [2024-11-08 16:48:51,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 5.745454545454545) internal successors, (316), 55 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:48:51,921 INFO L276 IsEmpty]: Start isEmpty. Operand 13982 states and 16787 transitions. [2024-11-08 16:48:51,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-08 16:48:51,923 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:48:51,923 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:48:51,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-08 16:48:52,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-08 16:48:52,124 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:48:52,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:48:52,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1181769735, now seen corresponding path program 1 times [2024-11-08 16:48:52,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:48:52,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446548425] [2024-11-08 16:48:52,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:48:52,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:48:52,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:48:53,560 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 32 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:48:53,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:48:53,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446548425] [2024-11-08 16:48:53,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446548425] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:48:53,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416240473] [2024-11-08 16:48:53,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:48:53,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:48:53,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:48:53,563 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:48:53,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 16:48:53,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:48:53,753 INFO L255 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-08 16:48:53,755 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:48:56,664 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 36 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:48:56,664 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:48:59,197 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 32 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:48:59,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416240473] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:48:59,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:48:59,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23, 21] total 61 [2024-11-08 16:48:59,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982684380] [2024-11-08 16:48:59,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:48:59,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-11-08 16:48:59,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:48:59,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-11-08 16:48:59,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=3332, Unknown=0, NotChecked=0, Total=3660 [2024-11-08 16:48:59,201 INFO L87 Difference]: Start difference. First operand 13982 states and 16787 transitions. Second operand has 61 states, 61 states have (on average 4.901639344262295) internal successors, (299), 61 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:49:19,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:49:19,840 INFO L93 Difference]: Finished difference Result 38808 states and 46915 transitions. [2024-11-08 16:49:19,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2024-11-08 16:49:19,841 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 4.901639344262295) internal successors, (299), 61 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2024-11-08 16:49:19,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:49:19,880 INFO L225 Difference]: With dead ends: 38808 [2024-11-08 16:49:19,880 INFO L226 Difference]: Without dead ends: 34287 [2024-11-08 16:49:19,894 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15371 ImplicationChecksByTransitivity, 20.7s TimeCoverageRelationStatistics Valid=5961, Invalid=44439, Unknown=0, NotChecked=0, Total=50400 [2024-11-08 16:49:19,895 INFO L432 NwaCegarLoop]: 184 mSDtfsCounter, 1953 mSDsluCounter, 5427 mSDsCounter, 0 mSdLazyCounter, 2841 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1953 SdHoareTripleChecker+Valid, 5611 SdHoareTripleChecker+Invalid, 2879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 2841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-08 16:49:19,895 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1953 Valid, 5611 Invalid, 2879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 2841 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-08 16:49:19,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34287 states. [2024-11-08 16:49:20,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34287 to 24593. [2024-11-08 16:49:20,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24593 states, 24592 states have (on average 1.205757970071568) internal successors, (29652), 24592 states have internal predecessors, (29652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:49:20,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24593 states to 24593 states and 29652 transitions. [2024-11-08 16:49:20,272 INFO L78 Accepts]: Start accepts. Automaton has 24593 states and 29652 transitions. Word has length 112 [2024-11-08 16:49:20,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:49:20,272 INFO L471 AbstractCegarLoop]: Abstraction has 24593 states and 29652 transitions. [2024-11-08 16:49:20,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 4.901639344262295) internal successors, (299), 61 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:49:20,272 INFO L276 IsEmpty]: Start isEmpty. Operand 24593 states and 29652 transitions. [2024-11-08 16:49:20,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-08 16:49:20,275 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:49:20,275 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:49:20,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-08 16:49:20,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-08 16:49:20,476 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:49:20,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:49:20,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1237323942, now seen corresponding path program 1 times [2024-11-08 16:49:20,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:49:20,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839378722] [2024-11-08 16:49:20,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:49:20,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:49:20,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:49:22,028 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 13 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:49:22,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:49:22,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839378722] [2024-11-08 16:49:22,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839378722] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:49:22,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602910518] [2024-11-08 16:49:22,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:49:22,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:49:22,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:49:22,031 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:49:22,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 16:49:22,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:49:22,205 INFO L255 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-08 16:49:22,207 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:49:24,844 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 13 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:49:24,844 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:49:27,661 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 13 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:49:27,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602910518] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:49:27,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:49:27,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 60 [2024-11-08 16:49:27,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144387587] [2024-11-08 16:49:27,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:49:27,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-08 16:49:27,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:49:27,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-08 16:49:27,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=294, Invalid=3246, Unknown=0, NotChecked=0, Total=3540 [2024-11-08 16:49:27,664 INFO L87 Difference]: Start difference. First operand 24593 states and 29652 transitions. Second operand has 60 states, 60 states have (on average 5.316666666666666) internal successors, (319), 60 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:49:33,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:49:33,811 INFO L93 Difference]: Finished difference Result 46277 states and 55913 transitions. [2024-11-08 16:49:33,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-08 16:49:33,812 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 5.316666666666666) internal successors, (319), 60 states have internal predecessors, (319), 0 states have call successors, (0), 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 112 [2024-11-08 16:49:33,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:49:33,848 INFO L225 Difference]: With dead ends: 46277 [2024-11-08 16:49:33,849 INFO L226 Difference]: Without dead ends: 37311 [2024-11-08 16:49:33,861 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 185 SyntacticMatches, 1 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2849 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=1194, Invalid=10362, Unknown=0, NotChecked=0, Total=11556 [2024-11-08 16:49:33,862 INFO L432 NwaCegarLoop]: 155 mSDtfsCounter, 834 mSDsluCounter, 5060 mSDsCounter, 0 mSdLazyCounter, 2803 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 5215 SdHoareTripleChecker+Invalid, 2821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-08 16:49:33,862 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [834 Valid, 5215 Invalid, 2821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2803 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-08 16:49:33,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37311 states. [2024-11-08 16:49:34,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37311 to 30069. [2024-11-08 16:49:34,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30069 states, 30068 states have (on average 1.2025076493281894) internal successors, (36157), 30068 states have internal predecessors, (36157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:49:34,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30069 states to 30069 states and 36157 transitions. [2024-11-08 16:49:34,335 INFO L78 Accepts]: Start accepts. Automaton has 30069 states and 36157 transitions. Word has length 112 [2024-11-08 16:49:34,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:49:34,336 INFO L471 AbstractCegarLoop]: Abstraction has 30069 states and 36157 transitions. [2024-11-08 16:49:34,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 5.316666666666666) internal successors, (319), 60 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:49:34,336 INFO L276 IsEmpty]: Start isEmpty. Operand 30069 states and 36157 transitions. [2024-11-08 16:49:34,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-08 16:49:34,338 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:49:34,338 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:49:34,363 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 16:49:34,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-08 16:49:34,539 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:49:34,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:49:34,541 INFO L85 PathProgramCache]: Analyzing trace with hash 2042226134, now seen corresponding path program 1 times [2024-11-08 16:49:34,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:49:34,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032000272] [2024-11-08 16:49:34,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:49:34,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:49:34,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:49:36,827 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 28 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:49:36,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:49:36,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032000272] [2024-11-08 16:49:36,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032000272] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:49:36,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010909339] [2024-11-08 16:49:36,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:49:36,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:49:36,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:49:36,831 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:49:36,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 16:49:37,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:49:37,025 INFO L255 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-08 16:49:37,027 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:49:40,403 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 28 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:49:40,403 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:49:43,625 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 28 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:49:43,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010909339] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:49:43,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:49:43,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 24, 20] total 66 [2024-11-08 16:49:43,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026534465] [2024-11-08 16:49:43,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:49:43,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-11-08 16:49:43,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:49:43,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-11-08 16:49:43,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=4027, Unknown=0, NotChecked=0, Total=4290 [2024-11-08 16:49:43,628 INFO L87 Difference]: Start difference. First operand 30069 states and 36157 transitions. Second operand has 66 states, 66 states have (on average 4.696969696969697) internal successors, (310), 66 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:49:58,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:49:58,236 INFO L93 Difference]: Finished difference Result 65476 states and 79083 transitions. [2024-11-08 16:49:58,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2024-11-08 16:49:58,237 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 4.696969696969697) internal successors, (310), 66 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2024-11-08 16:49:58,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:49:58,284 INFO L225 Difference]: With dead ends: 65476 [2024-11-08 16:49:58,284 INFO L226 Difference]: Without dead ends: 54033 [2024-11-08 16:49:58,297 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 185 SyntacticMatches, 2 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5918 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=2289, Invalid=20061, Unknown=0, NotChecked=0, Total=22350 [2024-11-08 16:49:58,298 INFO L432 NwaCegarLoop]: 161 mSDtfsCounter, 2348 mSDsluCounter, 6008 mSDsCounter, 0 mSdLazyCounter, 3398 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2348 SdHoareTripleChecker+Valid, 6169 SdHoareTripleChecker+Invalid, 3440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 3398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-08 16:49:58,298 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2348 Valid, 6169 Invalid, 3440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 3398 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-08 16:49:58,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54033 states. [2024-11-08 16:49:58,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54033 to 42987. [2024-11-08 16:49:58,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42987 states, 42986 states have (on average 1.2003210347555018) internal successors, (51597), 42986 states have internal predecessors, (51597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:49:58,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42987 states to 42987 states and 51597 transitions. [2024-11-08 16:49:58,952 INFO L78 Accepts]: Start accepts. Automaton has 42987 states and 51597 transitions. Word has length 113 [2024-11-08 16:49:58,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:49:58,953 INFO L471 AbstractCegarLoop]: Abstraction has 42987 states and 51597 transitions. [2024-11-08 16:49:58,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 4.696969696969697) internal successors, (310), 66 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:49:58,953 INFO L276 IsEmpty]: Start isEmpty. Operand 42987 states and 51597 transitions. [2024-11-08 16:49:58,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-08 16:49:58,954 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:49:58,955 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:49:58,972 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-08 16:49:59,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-08 16:49:59,155 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:49:59,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:49:59,157 INFO L85 PathProgramCache]: Analyzing trace with hash -71600930, now seen corresponding path program 1 times [2024-11-08 16:49:59,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:49:59,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607681998] [2024-11-08 16:49:59,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:49:59,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:49:59,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:49:59,814 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 32 proven. 54 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 16:49:59,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:49:59,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607681998] [2024-11-08 16:49:59,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607681998] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:49:59,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062294324] [2024-11-08 16:49:59,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:49:59,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:49:59,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:49:59,818 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:49:59,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 16:50:00,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:50:00,034 INFO L255 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-08 16:50:00,037 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:50:01,132 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 31 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:50:01,132 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:50:02,186 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 42 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:50:02,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062294324] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:50:02,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:50:02,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 12] total 37 [2024-11-08 16:50:02,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098439925] [2024-11-08 16:50:02,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:50:02,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-08 16:50:02,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:50:02,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-08 16:50:02,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1228, Unknown=0, NotChecked=0, Total=1332 [2024-11-08 16:50:02,188 INFO L87 Difference]: Start difference. First operand 42987 states and 51597 transitions. Second operand has 37 states, 37 states have (on average 8.378378378378379) internal successors, (310), 37 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:50:07,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:50:07,291 INFO L93 Difference]: Finished difference Result 86225 states and 103714 transitions. [2024-11-08 16:50:07,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2024-11-08 16:50:07,292 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 8.378378378378379) internal successors, (310), 37 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2024-11-08 16:50:07,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:50:07,331 INFO L225 Difference]: With dead ends: 86225 [2024-11-08 16:50:07,331 INFO L226 Difference]: Without dead ends: 45848 [2024-11-08 16:50:07,351 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2536 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1630, Invalid=9712, Unknown=0, NotChecked=0, Total=11342 [2024-11-08 16:50:07,352 INFO L432 NwaCegarLoop]: 194 mSDtfsCounter, 1007 mSDsluCounter, 4161 mSDsCounter, 0 mSdLazyCounter, 1813 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1007 SdHoareTripleChecker+Valid, 4355 SdHoareTripleChecker+Invalid, 1845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:50:07,352 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1007 Valid, 4355 Invalid, 1845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1813 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-08 16:50:07,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45848 states. [2024-11-08 16:50:07,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45848 to 40386. [2024-11-08 16:50:07,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40386 states, 40385 states have (on average 1.190986752507119) internal successors, (48098), 40385 states have internal predecessors, (48098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:50:07,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40386 states to 40386 states and 48098 transitions. [2024-11-08 16:50:07,816 INFO L78 Accepts]: Start accepts. Automaton has 40386 states and 48098 transitions. Word has length 113 [2024-11-08 16:50:07,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:50:07,817 INFO L471 AbstractCegarLoop]: Abstraction has 40386 states and 48098 transitions. [2024-11-08 16:50:07,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 8.378378378378379) internal successors, (310), 37 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:50:07,817 INFO L276 IsEmpty]: Start isEmpty. Operand 40386 states and 48098 transitions. [2024-11-08 16:50:07,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-08 16:50:07,820 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:50:07,820 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:50:07,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-08 16:50:08,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-08 16:50:08,021 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:50:08,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:50:08,021 INFO L85 PathProgramCache]: Analyzing trace with hash -2137192752, now seen corresponding path program 1 times [2024-11-08 16:50:08,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:50:08,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119311375] [2024-11-08 16:50:08,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:50:08,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:50:08,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:50:09,841 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 19 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:50:09,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:50:09,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119311375] [2024-11-08 16:50:09,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119311375] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:50:09,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750489082] [2024-11-08 16:50:09,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:50:09,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:50:09,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:50:09,844 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:50:09,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 16:50:10,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:50:10,077 INFO L255 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-08 16:50:10,079 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:50:11,905 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 32 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:50:11,905 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:50:13,232 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 47 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:50:13,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750489082] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:50:13,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:50:13,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 16, 15] total 53 [2024-11-08 16:50:13,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95873505] [2024-11-08 16:50:13,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:50:13,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-08 16:50:13,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:50:13,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-08 16:50:13,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=2556, Unknown=0, NotChecked=0, Total=2756 [2024-11-08 16:50:13,235 INFO L87 Difference]: Start difference. First operand 40386 states and 48098 transitions. Second operand has 53 states, 53 states have (on average 5.962264150943396) internal successors, (316), 53 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:50:26,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:50:26,227 INFO L93 Difference]: Finished difference Result 99677 states and 119454 transitions. [2024-11-08 16:50:26,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2024-11-08 16:50:26,228 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 5.962264150943396) internal successors, (316), 53 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2024-11-08 16:50:26,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:50:26,279 INFO L225 Difference]: With dead ends: 99677 [2024-11-08 16:50:26,279 INFO L226 Difference]: Without dead ends: 66493 [2024-11-08 16:50:26,291 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10838 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=4378, Invalid=31154, Unknown=0, NotChecked=0, Total=35532 [2024-11-08 16:50:26,292 INFO L432 NwaCegarLoop]: 167 mSDtfsCounter, 1249 mSDsluCounter, 5518 mSDsCounter, 0 mSdLazyCounter, 3836 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1249 SdHoareTripleChecker+Valid, 5685 SdHoareTripleChecker+Invalid, 3864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 3836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-08 16:50:26,292 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1249 Valid, 5685 Invalid, 3864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 3836 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-08 16:50:26,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66493 states. [2024-11-08 16:50:26,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66493 to 52927. [2024-11-08 16:50:26,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52927 states, 52926 states have (on average 1.1947436042776707) internal successors, (63233), 52926 states have internal predecessors, (63233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:50:26,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52927 states to 52927 states and 63233 transitions. [2024-11-08 16:50:26,952 INFO L78 Accepts]: Start accepts. Automaton has 52927 states and 63233 transitions. Word has length 114 [2024-11-08 16:50:26,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:50:26,952 INFO L471 AbstractCegarLoop]: Abstraction has 52927 states and 63233 transitions. [2024-11-08 16:50:26,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 5.962264150943396) internal successors, (316), 53 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:50:26,952 INFO L276 IsEmpty]: Start isEmpty. Operand 52927 states and 63233 transitions. [2024-11-08 16:50:26,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-08 16:50:26,954 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:50:26,954 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:50:26,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-08 16:50:27,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:50:27,155 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:50:27,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:50:27,156 INFO L85 PathProgramCache]: Analyzing trace with hash -858394813, now seen corresponding path program 1 times [2024-11-08 16:50:27,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:50:27,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001250523] [2024-11-08 16:50:27,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:50:27,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:50:27,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:50:28,920 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 20 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:50:28,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:50:28,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001250523] [2024-11-08 16:50:28,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001250523] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:50:28,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126036888] [2024-11-08 16:50:28,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:50:28,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:50:28,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:50:28,923 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:50:28,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-08 16:50:29,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:50:29,107 INFO L255 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-08 16:50:29,109 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:50:32,427 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 29 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:50:32,427 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:50:35,562 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 29 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:50:35,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126036888] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:50:35,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:50:35,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 18, 18] total 57 [2024-11-08 16:50:35,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894133955] [2024-11-08 16:50:35,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:50:35,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-11-08 16:50:35,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:50:35,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-11-08 16:50:35,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=3019, Unknown=0, NotChecked=0, Total=3192 [2024-11-08 16:50:35,565 INFO L87 Difference]: Start difference. First operand 52927 states and 63233 transitions. Second operand has 57 states, 57 states have (on average 5.526315789473684) internal successors, (315), 57 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:50:43,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:50:43,782 INFO L93 Difference]: Finished difference Result 71832 states and 85844 transitions. [2024-11-08 16:50:43,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-08 16:50:43,783 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 5.526315789473684) internal successors, (315), 57 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2024-11-08 16:50:43,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:50:43,818 INFO L225 Difference]: With dead ends: 71832 [2024-11-08 16:50:43,818 INFO L226 Difference]: Without dead ends: 45829 [2024-11-08 16:50:43,834 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1915 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=1144, Invalid=10198, Unknown=0, NotChecked=0, Total=11342 [2024-11-08 16:50:43,834 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 1206 mSDsluCounter, 4154 mSDsCounter, 0 mSdLazyCounter, 2252 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1206 SdHoareTripleChecker+Valid, 4277 SdHoareTripleChecker+Invalid, 2278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 2252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:50:43,834 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1206 Valid, 4277 Invalid, 2278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 2252 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-08 16:50:43,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45829 states. [2024-11-08 16:50:44,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45829 to 42546. [2024-11-08 16:50:44,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42546 states, 42545 states have (on average 1.195369608649665) internal successors, (50857), 42545 states have internal predecessors, (50857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:50:44,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42546 states to 42546 states and 50857 transitions. [2024-11-08 16:50:44,288 INFO L78 Accepts]: Start accepts. Automaton has 42546 states and 50857 transitions. Word has length 114 [2024-11-08 16:50:44,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:50:44,288 INFO L471 AbstractCegarLoop]: Abstraction has 42546 states and 50857 transitions. [2024-11-08 16:50:44,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 5.526315789473684) internal successors, (315), 57 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:50:44,288 INFO L276 IsEmpty]: Start isEmpty. Operand 42546 states and 50857 transitions. [2024-11-08 16:50:44,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-08 16:50:44,290 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:50:44,290 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:50:44,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-08 16:50:44,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:50:44,491 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:50:44,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:50:44,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1792090718, now seen corresponding path program 1 times [2024-11-08 16:50:44,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:50:44,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559319137] [2024-11-08 16:50:44,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:50:44,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:50:44,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:50:45,716 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 29 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:50:45,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:50:45,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559319137] [2024-11-08 16:50:45,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559319137] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:50:45,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308215079] [2024-11-08 16:50:45,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:50:45,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:50:45,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:50:45,719 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:50:45,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-08 16:50:45,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:50:45,907 INFO L255 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-08 16:50:45,909 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:50:49,097 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 30 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:50:49,098 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:50:52,730 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 29 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:50:52,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308215079] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:50:52,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:50:52,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 25, 24] total 63 [2024-11-08 16:50:52,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644982906] [2024-11-08 16:50:52,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:50:52,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-08 16:50:52,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:50:52,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-08 16:50:52,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=397, Invalid=3509, Unknown=0, NotChecked=0, Total=3906 [2024-11-08 16:50:52,733 INFO L87 Difference]: Start difference. First operand 42546 states and 50857 transitions. Second operand has 63 states, 63 states have (on average 4.5396825396825395) internal successors, (286), 63 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:51:11,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:51:11,143 INFO L93 Difference]: Finished difference Result 84383 states and 101292 transitions. [2024-11-08 16:51:11,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2024-11-08 16:51:11,143 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 4.5396825396825395) internal successors, (286), 63 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2024-11-08 16:51:11,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:51:11,194 INFO L225 Difference]: With dead ends: 84383 [2024-11-08 16:51:11,194 INFO L226 Difference]: Without dead ends: 53267 [2024-11-08 16:51:11,215 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 188 SyntacticMatches, 1 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17386 ImplicationChecksByTransitivity, 18.2s TimeCoverageRelationStatistics Valid=6432, Invalid=44870, Unknown=0, NotChecked=0, Total=51302 [2024-11-08 16:51:11,215 INFO L432 NwaCegarLoop]: 205 mSDtfsCounter, 2225 mSDsluCounter, 5660 mSDsCounter, 0 mSdLazyCounter, 3594 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2225 SdHoareTripleChecker+Valid, 5865 SdHoareTripleChecker+Invalid, 3633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 3594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:51:11,216 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2225 Valid, 5865 Invalid, 3633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 3594 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-08 16:51:11,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53267 states. [2024-11-08 16:51:11,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53267 to 34187. [2024-11-08 16:51:11,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34187 states, 34186 states have (on average 1.1912186275083367) internal successors, (40723), 34186 states have internal predecessors, (40723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:51:11,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34187 states to 34187 states and 40723 transitions. [2024-11-08 16:51:11,639 INFO L78 Accepts]: Start accepts. Automaton has 34187 states and 40723 transitions. Word has length 115 [2024-11-08 16:51:11,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:51:11,639 INFO L471 AbstractCegarLoop]: Abstraction has 34187 states and 40723 transitions. [2024-11-08 16:51:11,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 4.5396825396825395) internal successors, (286), 63 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:51:11,640 INFO L276 IsEmpty]: Start isEmpty. Operand 34187 states and 40723 transitions. [2024-11-08 16:51:11,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-08 16:51:11,641 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:51:11,642 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:51:11,669 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-08 16:51:11,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:51:11,843 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:51:11,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:51:11,843 INFO L85 PathProgramCache]: Analyzing trace with hash 918280660, now seen corresponding path program 1 times [2024-11-08 16:51:11,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:51:11,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038382977] [2024-11-08 16:51:11,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:51:11,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:51:11,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:51:14,058 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 19 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:51:14,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:51:14,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038382977] [2024-11-08 16:51:14,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038382977] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:51:14,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363732345] [2024-11-08 16:51:14,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:51:14,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:51:14,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:51:14,060 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:51:14,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-08 16:51:14,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:51:14,239 INFO L255 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-08 16:51:14,241 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:51:18,855 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 26 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:51:18,855 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:51:24,846 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 19 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:51:24,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363732345] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:51:24,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:51:24,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 28] total 75 [2024-11-08 16:51:24,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632586711] [2024-11-08 16:51:24,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:51:24,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-11-08 16:51:24,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:51:24,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-11-08 16:51:24,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=423, Invalid=5127, Unknown=0, NotChecked=0, Total=5550 [2024-11-08 16:51:24,849 INFO L87 Difference]: Start difference. First operand 34187 states and 40723 transitions. Second operand has 75 states, 75 states have (on average 4.28) internal successors, (321), 75 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:51:57,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:51:57,530 INFO L93 Difference]: Finished difference Result 43199 states and 51579 transitions. [2024-11-08 16:51:57,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2024-11-08 16:51:57,532 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 4.28) internal successors, (321), 75 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2024-11-08 16:51:57,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:51:57,566 INFO L225 Difference]: With dead ends: 43199 [2024-11-08 16:51:57,567 INFO L226 Difference]: Without dead ends: 33397 [2024-11-08 16:51:57,578 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12340 ImplicationChecksByTransitivity, 32.3s TimeCoverageRelationStatistics Valid=5847, Invalid=38885, Unknown=0, NotChecked=0, Total=44732 [2024-11-08 16:51:57,578 INFO L432 NwaCegarLoop]: 201 mSDtfsCounter, 1694 mSDsluCounter, 7094 mSDsCounter, 0 mSdLazyCounter, 5099 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1694 SdHoareTripleChecker+Valid, 7295 SdHoareTripleChecker+Invalid, 5144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 5099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-08 16:51:57,579 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1694 Valid, 7295 Invalid, 5144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 5099 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-11-08 16:51:57,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33397 states. [2024-11-08 16:51:57,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33397 to 33337. [2024-11-08 16:51:57,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33337 states, 33336 states have (on average 1.1907847372210223) internal successors, (39696), 33336 states have internal predecessors, (39696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:51:57,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33337 states to 33337 states and 39696 transitions. [2024-11-08 16:51:57,913 INFO L78 Accepts]: Start accepts. Automaton has 33337 states and 39696 transitions. Word has length 115 [2024-11-08 16:51:57,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:51:57,913 INFO L471 AbstractCegarLoop]: Abstraction has 33337 states and 39696 transitions. [2024-11-08 16:51:57,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 4.28) internal successors, (321), 75 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:51:57,914 INFO L276 IsEmpty]: Start isEmpty. Operand 33337 states and 39696 transitions. [2024-11-08 16:51:57,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-08 16:51:57,920 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:51:57,920 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-08 16:51:57,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-08 16:51:58,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:51:58,121 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:51:58,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:51:58,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1215915099, now seen corresponding path program 1 times [2024-11-08 16:51:58,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:51:58,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644230841] [2024-11-08 16:51:58,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:51:58,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:51:58,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:51:58,188 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-11-08 16:51:58,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:51:58,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644230841] [2024-11-08 16:51:58,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644230841] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:51:58,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:51:58,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:51:58,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874766194] [2024-11-08 16:51:58,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:51:58,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:51:58,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:51:58,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:51:58,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:51:58,191 INFO L87 Difference]: Start difference. First operand 33337 states and 39696 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:51:58,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:51:58,324 INFO L93 Difference]: Finished difference Result 64750 states and 77542 transitions. [2024-11-08 16:51:58,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:51:58,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 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 156 [2024-11-08 16:51:58,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:51:58,350 INFO L225 Difference]: With dead ends: 64750 [2024-11-08 16:51:58,350 INFO L226 Difference]: Without dead ends: 30472 [2024-11-08 16:51:58,365 INFO L431 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 [2024-11-08 16:51:58,366 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 27 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:51:58,366 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 156 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:51:58,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30472 states. [2024-11-08 16:51:58,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30472 to 28545. [2024-11-08 16:51:58,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28545 states, 28544 states have (on average 1.1625560538116593) internal successors, (33184), 28544 states have internal predecessors, (33184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:51:58,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28545 states to 28545 states and 33184 transitions. [2024-11-08 16:51:58,618 INFO L78 Accepts]: Start accepts. Automaton has 28545 states and 33184 transitions. Word has length 156 [2024-11-08 16:51:58,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:51:58,618 INFO L471 AbstractCegarLoop]: Abstraction has 28545 states and 33184 transitions. [2024-11-08 16:51:58,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:51:58,618 INFO L276 IsEmpty]: Start isEmpty. Operand 28545 states and 33184 transitions. [2024-11-08 16:51:58,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-08 16:51:58,621 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:51:58,621 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-08 16:51:58,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-08 16:51:58,621 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:51:58,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:51:58,622 INFO L85 PathProgramCache]: Analyzing trace with hash -154031252, now seen corresponding path program 1 times [2024-11-08 16:51:58,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:51:58,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345890243] [2024-11-08 16:51:58,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:51:58,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:51:58,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:51:59,867 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 62 proven. 186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:51:59,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:51:59,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345890243] [2024-11-08 16:51:59,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345890243] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:51:59,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114559830] [2024-11-08 16:51:59,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:51:59,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:51:59,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:51:59,870 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:51:59,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-08 16:52:00,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:52:00,085 INFO L255 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-08 16:52:00,089 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:52:03,906 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 149 proven. 67 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-08 16:52:03,906 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:52:10,314 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 32 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:52:10,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114559830] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:52:10,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:52:10,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 22, 27] total 66 [2024-11-08 16:52:10,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158364738] [2024-11-08 16:52:10,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:52:10,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-11-08 16:52:10,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:52:10,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-11-08 16:52:10,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=557, Invalid=3733, Unknown=0, NotChecked=0, Total=4290 [2024-11-08 16:52:10,318 INFO L87 Difference]: Start difference. First operand 28545 states and 33184 transitions. Second operand has 66 states, 66 states have (on average 6.46969696969697) internal successors, (427), 66 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:53:34,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:53:34,705 INFO L93 Difference]: Finished difference Result 79840 states and 92672 transitions. [2024-11-08 16:53:34,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 316 states. [2024-11-08 16:53:34,705 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 6.46969696969697) internal successors, (427), 66 states have internal predecessors, (427), 0 states have call successors, (0), 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 158 [2024-11-08 16:53:34,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:53:34,766 INFO L225 Difference]: With dead ends: 79840 [2024-11-08 16:53:34,766 INFO L226 Difference]: Without dead ends: 56940 [2024-11-08 16:53:34,790 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 648 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 378 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59419 ImplicationChecksByTransitivity, 79.0s TimeCoverageRelationStatistics Valid=23145, Invalid=120875, Unknown=0, NotChecked=0, Total=144020 [2024-11-08 16:53:34,791 INFO L432 NwaCegarLoop]: 247 mSDtfsCounter, 4507 mSDsluCounter, 6831 mSDsCounter, 0 mSdLazyCounter, 7106 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4507 SdHoareTripleChecker+Valid, 7078 SdHoareTripleChecker+Invalid, 7254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 7106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2024-11-08 16:53:34,791 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4507 Valid, 7078 Invalid, 7254 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [148 Valid, 7106 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2024-11-08 16:53:34,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56940 states. [2024-11-08 16:53:35,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56940 to 43697. [2024-11-08 16:53:35,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43697 states, 43696 states have (on average 1.1597171365800074) internal successors, (50675), 43696 states have internal predecessors, (50675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:53:35,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43697 states to 43697 states and 50675 transitions. [2024-11-08 16:53:35,314 INFO L78 Accepts]: Start accepts. Automaton has 43697 states and 50675 transitions. Word has length 158 [2024-11-08 16:53:35,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:53:35,314 INFO L471 AbstractCegarLoop]: Abstraction has 43697 states and 50675 transitions. [2024-11-08 16:53:35,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 6.46969696969697) internal successors, (427), 66 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:53:35,314 INFO L276 IsEmpty]: Start isEmpty. Operand 43697 states and 50675 transitions. [2024-11-08 16:53:35,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-08 16:53:35,317 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:53:35,317 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-08 16:53:35,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-08 16:53:35,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:53:35,518 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:53:35,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:53:35,518 INFO L85 PathProgramCache]: Analyzing trace with hash 459176474, now seen corresponding path program 1 times [2024-11-08 16:53:35,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:53:35,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960067689] [2024-11-08 16:53:35,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:53:35,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:53:35,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:53:37,931 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 22 proven. 221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:53:37,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:53:37,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960067689] [2024-11-08 16:53:37,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960067689] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:53:37,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078429365] [2024-11-08 16:53:37,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:53:37,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:53:37,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:53:37,933 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:53:37,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-08 16:53:38,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:53:38,225 INFO L255 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-08 16:53:38,227 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:53:43,079 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 22 proven. 202 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-08 16:53:43,079 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:53:47,938 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 22 proven. 202 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-08 16:53:47,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078429365] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:53:47,938 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:53:47,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 21, 21] total 64 [2024-11-08 16:53:47,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510268456] [2024-11-08 16:53:47,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:53:47,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-08 16:53:47,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:53:47,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-08 16:53:47,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=3801, Unknown=0, NotChecked=0, Total=4032 [2024-11-08 16:53:47,941 INFO L87 Difference]: Start difference. First operand 43697 states and 50675 transitions. Second operand has 64 states, 64 states have (on average 6.8125) internal successors, (436), 64 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:54:02,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:54:02,263 INFO L93 Difference]: Finished difference Result 44188 states and 51207 transitions. [2024-11-08 16:54:02,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2024-11-08 16:54:02,264 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 6.8125) internal successors, (436), 64 states have internal predecessors, (436), 0 states have call successors, (0), 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 159 [2024-11-08 16:54:02,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:54:02,301 INFO L225 Difference]: With dead ends: 44188 [2024-11-08 16:54:02,301 INFO L226 Difference]: Without dead ends: 42900 [2024-11-08 16:54:02,312 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2933 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=2175, Invalid=15117, Unknown=0, NotChecked=0, Total=17292 [2024-11-08 16:54:02,312 INFO L432 NwaCegarLoop]: 196 mSDtfsCounter, 985 mSDsluCounter, 6166 mSDsCounter, 0 mSdLazyCounter, 3269 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 6362 SdHoareTripleChecker+Invalid, 3297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 3269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-08 16:54:02,313 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [985 Valid, 6362 Invalid, 3297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 3269 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-08 16:54:02,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42900 states. [2024-11-08 16:54:02,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42900 to 41765. [2024-11-08 16:54:02,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41765 states, 41764 states have (on average 1.161047792357054) internal successors, (48490), 41764 states have internal predecessors, (48490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:54:02,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41765 states to 41765 states and 48490 transitions. [2024-11-08 16:54:02,895 INFO L78 Accepts]: Start accepts. Automaton has 41765 states and 48490 transitions. Word has length 159 [2024-11-08 16:54:02,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:54:02,896 INFO L471 AbstractCegarLoop]: Abstraction has 41765 states and 48490 transitions. [2024-11-08 16:54:02,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 6.8125) internal successors, (436), 64 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:54:02,896 INFO L276 IsEmpty]: Start isEmpty. Operand 41765 states and 48490 transitions. [2024-11-08 16:54:02,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-08 16:54:02,901 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:54:02,901 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:54:02,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-08 16:54:03,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-08 16:54:03,102 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:54:03,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:54:03,104 INFO L85 PathProgramCache]: Analyzing trace with hash 578060408, now seen corresponding path program 2 times [2024-11-08 16:54:03,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:54:03,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466007205] [2024-11-08 16:54:03,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:54:03,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:54:03,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:54:03,389 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 15 proven. 210 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-08 16:54:03,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:54:03,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466007205] [2024-11-08 16:54:03,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466007205] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:54:03,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660572576] [2024-11-08 16:54:03,391 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 16:54:03,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:54:03,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:54:03,393 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:54:03,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-08 16:54:03,689 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 16:54:03,689 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:54:03,693 INFO L255 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-08 16:54:03,696 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:54:04,072 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 28 proven. 210 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 16:54:04,072 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:54:04,975 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 137 proven. 108 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-08 16:54:04,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660572576] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:54:04,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:54:04,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 9] total 15 [2024-11-08 16:54:04,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814666733] [2024-11-08 16:54:04,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:54:04,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 16:54:04,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:54:04,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 16:54:04,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2024-11-08 16:54:04,977 INFO L87 Difference]: Start difference. First operand 41765 states and 48490 transitions. Second operand has 15 states, 15 states have (on average 22.333333333333332) internal successors, (335), 15 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:54:05,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:54:05,363 INFO L93 Difference]: Finished difference Result 100333 states and 117547 transitions. [2024-11-08 16:54:05,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 16:54:05,364 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 22.333333333333332) internal successors, (335), 15 states have internal predecessors, (335), 0 states have call successors, (0), 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 160 [2024-11-08 16:54:05,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:54:05,422 INFO L225 Difference]: With dead ends: 100333 [2024-11-08 16:54:05,422 INFO L226 Difference]: Without dead ends: 59250 [2024-11-08 16:54:05,442 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2024-11-08 16:54:05,443 INFO L432 NwaCegarLoop]: 168 mSDtfsCounter, 369 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:54:05,443 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 889 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:54:05,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59250 states. [2024-11-08 16:54:06,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59250 to 57249. [2024-11-08 16:54:06,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57249 states, 57248 states have (on average 1.1503109278926775) internal successors, (65853), 57248 states have internal predecessors, (65853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:54:06,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57249 states to 57249 states and 65853 transitions. [2024-11-08 16:54:06,602 INFO L78 Accepts]: Start accepts. Automaton has 57249 states and 65853 transitions. Word has length 160 [2024-11-08 16:54:06,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:54:06,603 INFO L471 AbstractCegarLoop]: Abstraction has 57249 states and 65853 transitions. [2024-11-08 16:54:06,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 22.333333333333332) internal successors, (335), 15 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:54:06,603 INFO L276 IsEmpty]: Start isEmpty. Operand 57249 states and 65853 transitions. [2024-11-08 16:54:06,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-08 16:54:06,610 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:54:06,611 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-08 16:54:06,638 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-08 16:54:06,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:54:06,815 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:54:06,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:54:06,816 INFO L85 PathProgramCache]: Analyzing trace with hash -36979272, now seen corresponding path program 1 times [2024-11-08 16:54:06,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:54:06,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980357019] [2024-11-08 16:54:06,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:54:06,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:54:06,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:54:08,691 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 48 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:54:08,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:54:08,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980357019] [2024-11-08 16:54:08,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980357019] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:54:08,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987971801] [2024-11-08 16:54:08,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:54:08,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:54:08,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:54:08,693 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:54:08,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-08 16:54:08,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:54:08,940 INFO L255 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-08 16:54:08,943 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:54:13,663 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 48 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:54:13,663 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:54:18,635 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 48 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:54:18,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987971801] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:54:18,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:54:18,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 29, 26] total 69 [2024-11-08 16:54:18,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533260987] [2024-11-08 16:54:18,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:54:18,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-11-08 16:54:18,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:54:18,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-11-08 16:54:18,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=494, Invalid=4198, Unknown=0, NotChecked=0, Total=4692 [2024-11-08 16:54:18,638 INFO L87 Difference]: Start difference. First operand 57249 states and 65853 transitions. Second operand has 69 states, 69 states have (on average 6.043478260869565) internal successors, (417), 69 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:54:48,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:54:48,244 INFO L93 Difference]: Finished difference Result 73996 states and 85186 transitions. [2024-11-08 16:54:48,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2024-11-08 16:54:48,245 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 6.043478260869565) internal successors, (417), 69 states have internal predecessors, (417), 0 states have call successors, (0), 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 160 [2024-11-08 16:54:48,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:54:48,277 INFO L225 Difference]: With dead ends: 73996 [2024-11-08 16:54:48,277 INFO L226 Difference]: Without dead ends: 36571 [2024-11-08 16:54:48,294 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 273 SyntacticMatches, 1 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13653 ImplicationChecksByTransitivity, 28.4s TimeCoverageRelationStatistics Valid=5793, Invalid=39363, Unknown=0, NotChecked=0, Total=45156 [2024-11-08 16:54:48,294 INFO L432 NwaCegarLoop]: 257 mSDtfsCounter, 1161 mSDsluCounter, 7766 mSDsCounter, 0 mSdLazyCounter, 4717 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1161 SdHoareTripleChecker+Valid, 8023 SdHoareTripleChecker+Invalid, 4777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 4717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-08 16:54:48,295 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1161 Valid, 8023 Invalid, 4777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 4717 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-08 16:54:48,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36571 states. [2024-11-08 16:54:48,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36571 to 31406. [2024-11-08 16:54:48,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31406 states, 31405 states have (on average 1.1457092819614711) internal successors, (35981), 31405 states have internal predecessors, (35981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:54:48,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31406 states to 31406 states and 35981 transitions. [2024-11-08 16:54:48,573 INFO L78 Accepts]: Start accepts. Automaton has 31406 states and 35981 transitions. Word has length 160 [2024-11-08 16:54:48,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:54:48,574 INFO L471 AbstractCegarLoop]: Abstraction has 31406 states and 35981 transitions. [2024-11-08 16:54:48,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 6.043478260869565) internal successors, (417), 69 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:54:48,574 INFO L276 IsEmpty]: Start isEmpty. Operand 31406 states and 35981 transitions. [2024-11-08 16:54:48,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-08 16:54:48,577 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:54:48,577 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-08 16:54:48,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-08 16:54:48,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-08 16:54:48,778 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:54:48,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:54:48,778 INFO L85 PathProgramCache]: Analyzing trace with hash -2019759976, now seen corresponding path program 1 times [2024-11-08 16:54:48,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:54:48,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844724243] [2024-11-08 16:54:48,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:54:48,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:54:48,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:54:50,320 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 32 proven. 219 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:54:50,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:54:50,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844724243] [2024-11-08 16:54:50,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844724243] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:54:50,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323036761] [2024-11-08 16:54:50,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:54:50,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:54:50,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:54:50,322 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:54:50,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-08 16:54:50,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:54:50,546 INFO L255 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-08 16:54:50,550 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:54:53,934 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 32 proven. 219 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:54:53,935 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:54:57,843 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 32 proven. 219 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:54:57,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323036761] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:54:57,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:54:57,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 26, 23] total 65 [2024-11-08 16:54:57,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753172291] [2024-11-08 16:54:57,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:54:57,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-11-08 16:54:57,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:54:57,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-11-08 16:54:57,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=3894, Unknown=0, NotChecked=0, Total=4160 [2024-11-08 16:54:57,846 INFO L87 Difference]: Start difference. First operand 31406 states and 35981 transitions. Second operand has 65 states, 65 states have (on average 6.553846153846154) internal successors, (426), 65 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:44,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:55:44,509 INFO L93 Difference]: Finished difference Result 44715 states and 51152 transitions. [2024-11-08 16:55:44,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2024-11-08 16:55:44,510 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 6.553846153846154) internal successors, (426), 65 states have internal predecessors, (426), 0 states have call successors, (0), 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 160 [2024-11-08 16:55:44,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:55:44,533 INFO L225 Difference]: With dead ends: 44715 [2024-11-08 16:55:44,533 INFO L226 Difference]: Without dead ends: 27259 [2024-11-08 16:55:44,544 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 277 SyntacticMatches, 2 SemanticMatches, 267 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23093 ImplicationChecksByTransitivity, 42.8s TimeCoverageRelationStatistics Valid=7613, Invalid=64479, Unknown=0, NotChecked=0, Total=72092 [2024-11-08 16:55:44,545 INFO L432 NwaCegarLoop]: 324 mSDtfsCounter, 2360 mSDsluCounter, 11185 mSDsCounter, 0 mSdLazyCounter, 7080 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2360 SdHoareTripleChecker+Valid, 11509 SdHoareTripleChecker+Invalid, 7164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 7080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2024-11-08 16:55:44,545 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2360 Valid, 11509 Invalid, 7164 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [84 Valid, 7080 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2024-11-08 16:55:44,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27259 states. [2024-11-08 16:55:44,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27259 to 18314. [2024-11-08 16:55:44,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18314 states, 18313 states have (on average 1.129634685742369) internal successors, (20687), 18313 states have internal predecessors, (20687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:44,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18314 states to 18314 states and 20687 transitions. [2024-11-08 16:55:44,718 INFO L78 Accepts]: Start accepts. Automaton has 18314 states and 20687 transitions. Word has length 160 [2024-11-08 16:55:44,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:55:44,719 INFO L471 AbstractCegarLoop]: Abstraction has 18314 states and 20687 transitions. [2024-11-08 16:55:44,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 6.553846153846154) internal successors, (426), 65 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:44,719 INFO L276 IsEmpty]: Start isEmpty. Operand 18314 states and 20687 transitions. [2024-11-08 16:55:44,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-08 16:55:44,720 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:55:44,721 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-08 16:55:44,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-08 16:55:44,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-08 16:55:44,921 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:55:44,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:44,922 INFO L85 PathProgramCache]: Analyzing trace with hash 99494165, now seen corresponding path program 1 times [2024-11-08 16:55:44,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:44,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239300700] [2024-11-08 16:55:44,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:44,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:44,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:45,101 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2024-11-08 16:55:45,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:45,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239300700] [2024-11-08 16:55:45,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239300700] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:55:45,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:55:45,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:55:45,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082778974] [2024-11-08 16:55:45,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:55:45,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:55:45,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:55:45,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:55:45,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:55:45,104 INFO L87 Difference]: Start difference. First operand 18314 states and 20687 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:45,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:55:45,219 INFO L93 Difference]: Finished difference Result 25643 states and 29096 transitions. [2024-11-08 16:55:45,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:55:45,220 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 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 161 [2024-11-08 16:55:45,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:55:45,238 INFO L225 Difference]: With dead ends: 25643 [2024-11-08 16:55:45,238 INFO L226 Difference]: Without dead ends: 17493 [2024-11-08 16:55:45,246 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:55:45,247 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 156 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:55:45,247 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 288 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:55:45,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17493 states. [2024-11-08 16:55:45,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17493 to 16019. [2024-11-08 16:55:45,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16019 states, 16018 states have (on average 1.1251716818579098) internal successors, (18023), 16018 states have internal predecessors, (18023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:45,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16019 states to 16019 states and 18023 transitions. [2024-11-08 16:55:45,435 INFO L78 Accepts]: Start accepts. Automaton has 16019 states and 18023 transitions. Word has length 161 [2024-11-08 16:55:45,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:55:45,435 INFO L471 AbstractCegarLoop]: Abstraction has 16019 states and 18023 transitions. [2024-11-08 16:55:45,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:45,435 INFO L276 IsEmpty]: Start isEmpty. Operand 16019 states and 18023 transitions. [2024-11-08 16:55:45,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-08 16:55:45,437 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:55:45,437 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:55:45,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-11-08 16:55:45,437 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:55:45,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:45,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1180369513, now seen corresponding path program 1 times [2024-11-08 16:55:45,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:45,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025614820] [2024-11-08 16:55:45,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:45,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:45,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:46,697 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 48 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:46,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:46,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025614820] [2024-11-08 16:55:46,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025614820] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:55:46,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343498192] [2024-11-08 16:55:46,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:46,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:55:46,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:55:46,701 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:55:46,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-08 16:55:46,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:46,943 INFO L255 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-08 16:55:46,945 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:55:49,409 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 48 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:49,409 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:55:52,799 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 48 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:52,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343498192] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:55:52,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:55:52,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 55 [2024-11-08 16:55:52,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527885236] [2024-11-08 16:55:52,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:55:52,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-08 16:55:52,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:55:52,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-08 16:55:52,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=2760, Unknown=0, NotChecked=0, Total=2970 [2024-11-08 16:55:52,802 INFO L87 Difference]: Start difference. First operand 16019 states and 18023 transitions. Second operand has 55 states, 55 states have (on average 7.709090909090909) internal successors, (424), 55 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:56:08,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:56:08,302 INFO L93 Difference]: Finished difference Result 16694 states and 18742 transitions. [2024-11-08 16:56:08,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2024-11-08 16:56:08,302 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 7.709090909090909) internal successors, (424), 55 states have internal predecessors, (424), 0 states have call successors, (0), 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 161 [2024-11-08 16:56:08,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:56:08,315 INFO L225 Difference]: With dead ends: 16694 [2024-11-08 16:56:08,315 INFO L226 Difference]: Without dead ends: 16057 [2024-11-08 16:56:08,320 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 285 SyntacticMatches, 3 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6981 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=3025, Invalid=20845, Unknown=0, NotChecked=0, Total=23870 [2024-11-08 16:56:08,320 INFO L432 NwaCegarLoop]: 257 mSDtfsCounter, 943 mSDsluCounter, 6799 mSDsCounter, 0 mSdLazyCounter, 3332 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 943 SdHoareTripleChecker+Valid, 7056 SdHoareTripleChecker+Invalid, 3365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-08 16:56:08,321 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [943 Valid, 7056 Invalid, 3365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3332 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-08 16:56:08,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16057 states. [2024-11-08 16:56:08,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16057 to 15425. [2024-11-08 16:56:08,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15425 states, 15424 states have (on average 1.1277878630705394) internal successors, (17395), 15424 states have internal predecessors, (17395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:56:08,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15425 states to 15425 states and 17395 transitions. [2024-11-08 16:56:08,459 INFO L78 Accepts]: Start accepts. Automaton has 15425 states and 17395 transitions. Word has length 161 [2024-11-08 16:56:08,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:56:08,459 INFO L471 AbstractCegarLoop]: Abstraction has 15425 states and 17395 transitions. [2024-11-08 16:56:08,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 7.709090909090909) internal successors, (424), 55 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:56:08,459 INFO L276 IsEmpty]: Start isEmpty. Operand 15425 states and 17395 transitions. [2024-11-08 16:56:08,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-08 16:56:08,460 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:56:08,461 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-08 16:56:08,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-08 16:56:08,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:56:08,661 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:56:08,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:56:08,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1073049458, now seen corresponding path program 1 times [2024-11-08 16:56:08,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:56:08,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193436891] [2024-11-08 16:56:08,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:56:08,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:56:08,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:56:08,824 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2024-11-08 16:56:08,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:56:08,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193436891] [2024-11-08 16:56:08,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193436891] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:56:08,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:56:08,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:56:08,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082046189] [2024-11-08 16:56:08,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:56:08,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:56:08,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:56:08,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:56:08,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:56:08,826 INFO L87 Difference]: Start difference. First operand 15425 states and 17395 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:56:08,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:56:08,915 INFO L93 Difference]: Finished difference Result 22925 states and 25965 transitions. [2024-11-08 16:56:08,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:56:08,916 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2024-11-08 16:56:08,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:56:08,927 INFO L225 Difference]: With dead ends: 22925 [2024-11-08 16:56:08,927 INFO L226 Difference]: Without dead ends: 13959 [2024-11-08 16:56:08,932 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:56:08,933 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 166 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:56:08,933 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 309 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:56:08,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13959 states. [2024-11-08 16:56:09,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13959 to 12731. [2024-11-08 16:56:09,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12731 states, 12730 states have (on average 1.1211311861743911) internal successors, (14272), 12730 states have internal predecessors, (14272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:56:09,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12731 states to 12731 states and 14272 transitions. [2024-11-08 16:56:09,053 INFO L78 Accepts]: Start accepts. Automaton has 12731 states and 14272 transitions. Word has length 161 [2024-11-08 16:56:09,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:56:09,054 INFO L471 AbstractCegarLoop]: Abstraction has 12731 states and 14272 transitions. [2024-11-08 16:56:09,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:56:09,054 INFO L276 IsEmpty]: Start isEmpty. Operand 12731 states and 14272 transitions. [2024-11-08 16:56:09,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-08 16:56:09,057 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:56:09,057 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:56:09,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-11-08 16:56:09,057 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:56:09,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:56:09,058 INFO L85 PathProgramCache]: Analyzing trace with hash 680022448, now seen corresponding path program 1 times [2024-11-08 16:56:09,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:56:09,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859358606] [2024-11-08 16:56:09,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:56:09,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:56:09,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:56:11,203 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 32 proven. 221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:56:11,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:56:11,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859358606] [2024-11-08 16:56:11,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859358606] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:56:11,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370988881] [2024-11-08 16:56:11,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:56:11,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:56:11,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:56:11,205 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:56:11,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-08 16:56:11,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:56:11,502 INFO L255 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-08 16:56:11,505 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:56:21,788 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 32 proven. 221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:56:21,788 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:56:29,860 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 32 proven. 221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:56:29,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370988881] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:56:29,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:56:29,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 34, 28] total 83 [2024-11-08 16:56:29,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087502516] [2024-11-08 16:56:29,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:56:29,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2024-11-08 16:56:29,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:56:29,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2024-11-08 16:56:29,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=680, Invalid=6126, Unknown=0, NotChecked=0, Total=6806 [2024-11-08 16:56:29,864 INFO L87 Difference]: Start difference. First operand 12731 states and 14272 transitions. Second operand has 83 states, 83 states have (on average 5.566265060240964) internal successors, (462), 83 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:57:48,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:57:48,109 INFO L93 Difference]: Finished difference Result 18698 states and 21083 transitions. [2024-11-08 16:57:48,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2024-11-08 16:57:48,110 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 5.566265060240964) internal successors, (462), 83 states have internal predecessors, (462), 0 states have call successors, (0), 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 161 [2024-11-08 16:57:48,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:57:48,115 INFO L225 Difference]: With dead ends: 18698 [2024-11-08 16:57:48,116 INFO L226 Difference]: Without dead ends: 7914 [2024-11-08 16:57:48,122 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 264 SyntacticMatches, 1 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16143 ImplicationChecksByTransitivity, 78.1s TimeCoverageRelationStatistics Valid=7128, Invalid=42824, Unknown=0, NotChecked=0, Total=49952 [2024-11-08 16:57:48,123 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 4534 mSDsluCounter, 4218 mSDsCounter, 0 mSdLazyCounter, 5479 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4534 SdHoareTripleChecker+Valid, 4354 SdHoareTripleChecker+Invalid, 5660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 5479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2024-11-08 16:57:48,123 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4534 Valid, 4354 Invalid, 5660 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [181 Valid, 5479 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2024-11-08 16:57:48,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7914 states. [2024-11-08 16:57:48,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7914 to 7842. [2024-11-08 16:57:48,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7842 states, 7841 states have (on average 1.11618416018365) internal successors, (8752), 7841 states have internal predecessors, (8752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:57:48,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7842 states to 7842 states and 8752 transitions. [2024-11-08 16:57:48,190 INFO L78 Accepts]: Start accepts. Automaton has 7842 states and 8752 transitions. Word has length 161 [2024-11-08 16:57:48,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:57:48,190 INFO L471 AbstractCegarLoop]: Abstraction has 7842 states and 8752 transitions. [2024-11-08 16:57:48,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 5.566265060240964) internal successors, (462), 83 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:57:48,191 INFO L276 IsEmpty]: Start isEmpty. Operand 7842 states and 8752 transitions. [2024-11-08 16:57:48,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-08 16:57:48,193 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:57:48,193 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-08 16:57:48,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-08 16:57:48,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:57:48,394 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:57:48,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:57:48,394 INFO L85 PathProgramCache]: Analyzing trace with hash 835382944, now seen corresponding path program 1 times [2024-11-08 16:57:48,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:57:48,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571471150] [2024-11-08 16:57:48,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:57:48,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:57:48,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:57:48,553 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2024-11-08 16:57:48,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:57:48,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571471150] [2024-11-08 16:57:48,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571471150] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:57:48,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:57:48,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:57:48,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234968356] [2024-11-08 16:57:48,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:57:48,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:57:48,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:57:48,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:57:48,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:57:48,555 INFO L87 Difference]: Start difference. First operand 7842 states and 8752 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:57:48,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:57:48,615 INFO L93 Difference]: Finished difference Result 9105 states and 10241 transitions. [2024-11-08 16:57:48,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:57:48,616 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 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 161 [2024-11-08 16:57:48,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:57:48,622 INFO L225 Difference]: With dead ends: 9105 [2024-11-08 16:57:48,622 INFO L226 Difference]: Without dead ends: 8593 [2024-11-08 16:57:48,624 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:57:48,625 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 150 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:57:48,625 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 270 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:57:48,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8593 states. [2024-11-08 16:57:48,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8593 to 7527. [2024-11-08 16:57:48,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7527 states, 7526 states have (on average 1.115997874036673) internal successors, (8399), 7526 states have internal predecessors, (8399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:57:48,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7527 states to 7527 states and 8399 transitions. [2024-11-08 16:57:48,692 INFO L78 Accepts]: Start accepts. Automaton has 7527 states and 8399 transitions. Word has length 161 [2024-11-08 16:57:48,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:57:48,692 INFO L471 AbstractCegarLoop]: Abstraction has 7527 states and 8399 transitions. [2024-11-08 16:57:48,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:57:48,692 INFO L276 IsEmpty]: Start isEmpty. Operand 7527 states and 8399 transitions. [2024-11-08 16:57:48,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-08 16:57:48,693 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:57:48,694 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-08 16:57:48,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-11-08 16:57:48,694 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:57:48,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:57:48,694 INFO L85 PathProgramCache]: Analyzing trace with hash -853560798, now seen corresponding path program 1 times [2024-11-08 16:57:48,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:57:48,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196028646] [2024-11-08 16:57:48,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:57:48,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:57:48,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:57:50,028 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 32 proven. 219 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:57:50,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:57:50,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196028646] [2024-11-08 16:57:50,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196028646] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:57:50,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77188483] [2024-11-08 16:57:50,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:57:50,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:57:50,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:57:50,030 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:57:50,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-08 16:57:50,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:57:50,360 INFO L255 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-08 16:57:50,363 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:57:51,760 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 78 proven. 153 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-08 16:57:51,760 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:57:54,474 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 32 proven. 199 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-08 16:57:54,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77188483] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:57:54,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:57:54,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11, 11] total 31 [2024-11-08 16:57:54,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389778166] [2024-11-08 16:57:54,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:57:54,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-08 16:57:54,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:57:54,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-08 16:57:54,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=884, Unknown=0, NotChecked=0, Total=992 [2024-11-08 16:57:54,476 INFO L87 Difference]: Start difference. First operand 7527 states and 8399 transitions. Second operand has 32 states, 32 states have (on average 12.0625) internal successors, (386), 31 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:57:59,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:57:59,395 INFO L93 Difference]: Finished difference Result 13675 states and 15411 transitions. [2024-11-08 16:57:59,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-08 16:57:59,396 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 12.0625) internal successors, (386), 31 states have internal predecessors, (386), 0 states have call successors, (0), 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 161 [2024-11-08 16:57:59,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:57:59,402 INFO L225 Difference]: With dead ends: 13675 [2024-11-08 16:57:59,402 INFO L226 Difference]: Without dead ends: 7861 [2024-11-08 16:57:59,406 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1052 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1018, Invalid=4384, Unknown=0, NotChecked=0, Total=5402 [2024-11-08 16:57:59,406 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 530 mSDsluCounter, 1214 mSDsCounter, 0 mSdLazyCounter, 1268 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 1293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:57:59,407 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [530 Valid, 1296 Invalid, 1293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1268 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-08 16:57:59,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7861 states. [2024-11-08 16:57:59,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7861 to 6535. [2024-11-08 16:57:59,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6535 states, 6534 states have (on average 1.0993265993265993) internal successors, (7183), 6534 states have internal predecessors, (7183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:57:59,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6535 states to 6535 states and 7183 transitions. [2024-11-08 16:57:59,479 INFO L78 Accepts]: Start accepts. Automaton has 6535 states and 7183 transitions. Word has length 161 [2024-11-08 16:57:59,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:57:59,480 INFO L471 AbstractCegarLoop]: Abstraction has 6535 states and 7183 transitions. [2024-11-08 16:57:59,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 12.0625) internal successors, (386), 31 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:57:59,480 INFO L276 IsEmpty]: Start isEmpty. Operand 6535 states and 7183 transitions. [2024-11-08 16:57:59,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-08 16:57:59,481 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:57:59,481 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:57:59,498 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-08 16:57:59,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-11-08 16:57:59,682 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:57:59,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:57:59,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1466632336, now seen corresponding path program 1 times [2024-11-08 16:57:59,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:57:59,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80017077] [2024-11-08 16:57:59,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:57:59,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:57:59,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:58:02,681 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 48 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:58:02,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:58:02,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80017077] [2024-11-08 16:58:02,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80017077] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:58:02,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120798067] [2024-11-08 16:58:02,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:58:02,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:58:02,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:58:02,683 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:58:02,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-08 16:58:02,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:58:02,988 INFO L255 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-08 16:58:02,991 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:58:06,861 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 66 proven. 187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:58:06,861 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:58:13,590 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 64 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:58:13,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120798067] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:58:13,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:58:13,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 23, 22] total 72 [2024-11-08 16:58:13,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706130438] [2024-11-08 16:58:13,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:58:13,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-11-08 16:58:13,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:58:13,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-11-08 16:58:13,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=4792, Unknown=0, NotChecked=0, Total=5112 [2024-11-08 16:58:13,593 INFO L87 Difference]: Start difference. First operand 6535 states and 7183 transitions. Second operand has 72 states, 72 states have (on average 6.236111111111111) internal successors, (449), 72 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:59:26,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:59:26,781 INFO L93 Difference]: Finished difference Result 7475 states and 8155 transitions. [2024-11-08 16:59:26,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2024-11-08 16:59:26,782 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 6.236111111111111) internal successors, (449), 72 states have internal predecessors, (449), 0 states have call successors, (0), 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 161 [2024-11-08 16:59:26,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:59:26,787 INFO L225 Difference]: With dead ends: 7475 [2024-11-08 16:59:26,787 INFO L226 Difference]: Without dead ends: 7100 [2024-11-08 16:59:26,790 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8653 ImplicationChecksByTransitivity, 69.4s TimeCoverageRelationStatistics Valid=5462, Invalid=29694, Unknown=0, NotChecked=0, Total=35156 [2024-11-08 16:59:26,791 INFO L432 NwaCegarLoop]: 151 mSDtfsCounter, 3289 mSDsluCounter, 4844 mSDsCounter, 0 mSdLazyCounter, 5363 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3289 SdHoareTripleChecker+Valid, 4995 SdHoareTripleChecker+Invalid, 5504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 5363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:59:26,791 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3289 Valid, 4995 Invalid, 5504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 5363 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2024-11-08 16:59:26,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7100 states. [2024-11-08 16:59:26,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7100 to 6442. [2024-11-08 16:59:26,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6442 states, 6441 states have (on average 1.1002949852507375) internal successors, (7087), 6441 states have internal predecessors, (7087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:59:26,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6442 states to 6442 states and 7087 transitions. [2024-11-08 16:59:26,842 INFO L78 Accepts]: Start accepts. Automaton has 6442 states and 7087 transitions. Word has length 161 [2024-11-08 16:59:26,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:59:26,843 INFO L471 AbstractCegarLoop]: Abstraction has 6442 states and 7087 transitions. [2024-11-08 16:59:26,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 6.236111111111111) internal successors, (449), 72 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:59:26,843 INFO L276 IsEmpty]: Start isEmpty. Operand 6442 states and 7087 transitions. [2024-11-08 16:59:26,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-08 16:59:26,844 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:59:26,845 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-08 16:59:26,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-08 16:59:27,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-11-08 16:59:27,045 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:59:27,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:59:27,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1999632577, now seen corresponding path program 1 times [2024-11-08 16:59:27,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:59:27,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028364800] [2024-11-08 16:59:27,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:59:27,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:59:27,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:59:27,703 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 158 proven. 62 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-08 16:59:27,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:59:27,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028364800] [2024-11-08 16:59:27,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028364800] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:59:27,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322410801] [2024-11-08 16:59:27,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:59:27,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:59:27,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:59:27,707 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:59:27,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-08 16:59:27,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:59:28,000 INFO L255 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-08 16:59:28,003 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:59:29,460 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 62 proven. 150 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-08 16:59:29,460 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:59:30,868 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 118 proven. 94 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-08 16:59:30,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322410801] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:59:30,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:59:30,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 28 [2024-11-08 16:59:30,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875847298] [2024-11-08 16:59:30,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:59:30,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-08 16:59:30,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:59:30,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-08 16:59:30,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=643, Unknown=0, NotChecked=0, Total=756 [2024-11-08 16:59:30,870 INFO L87 Difference]: Start difference. First operand 6442 states and 7087 transitions. Second operand has 28 states, 28 states have (on average 11.714285714285714) internal successors, (328), 28 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:59:31,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:59:31,625 INFO L93 Difference]: Finished difference Result 12560 states and 14067 transitions. [2024-11-08 16:59:31,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-08 16:59:31,626 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 11.714285714285714) internal successors, (328), 28 states have internal predecessors, (328), 0 states have call successors, (0), 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 162 [2024-11-08 16:59:31,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:59:31,632 INFO L225 Difference]: With dead ends: 12560 [2024-11-08 16:59:31,632 INFO L226 Difference]: Without dead ends: 8161 [2024-11-08 16:59:31,635 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 309 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=249, Invalid=1157, Unknown=0, NotChecked=0, Total=1406 [2024-11-08 16:59:31,636 INFO L432 NwaCegarLoop]: 134 mSDtfsCounter, 150 mSDsluCounter, 1831 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 1965 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 16:59:31,636 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 1965 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 16:59:31,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8161 states. [2024-11-08 16:59:31,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8161 to 6976. [2024-11-08 16:59:31,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6976 states, 6975 states have (on average 1.1099641577060932) internal successors, (7742), 6975 states have internal predecessors, (7742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:59:31,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6976 states to 6976 states and 7742 transitions. [2024-11-08 16:59:31,694 INFO L78 Accepts]: Start accepts. Automaton has 6976 states and 7742 transitions. Word has length 162 [2024-11-08 16:59:31,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:59:31,695 INFO L471 AbstractCegarLoop]: Abstraction has 6976 states and 7742 transitions. [2024-11-08 16:59:31,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 11.714285714285714) internal successors, (328), 28 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:59:31,695 INFO L276 IsEmpty]: Start isEmpty. Operand 6976 states and 7742 transitions. [2024-11-08 16:59:31,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-08 16:59:31,696 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:59:31,696 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:59:31,716 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-08 16:59:31,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-11-08 16:59:31,897 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:59:31,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:59:31,897 INFO L85 PathProgramCache]: Analyzing trace with hash -438273941, now seen corresponding path program 1 times [2024-11-08 16:59:31,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:59:31,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809085520] [2024-11-08 16:59:31,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:59:31,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:59:31,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:59:34,541 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 59 proven. 197 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:59:34,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:59:34,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809085520] [2024-11-08 16:59:34,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809085520] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:59:34,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725788189] [2024-11-08 16:59:34,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:59:34,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:59:34,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:59:34,544 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:59:34,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-08 16:59:34,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:59:34,839 INFO L255 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-08 16:59:34,841 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:59:40,100 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 50 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:59:40,100 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:59:48,273 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 101 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:59:48,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725788189] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:59:48,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:59:48,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 24, 24] total 74 [2024-11-08 16:59:48,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570832168] [2024-11-08 16:59:48,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:59:48,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-11-08 16:59:48,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:59:48,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-11-08 16:59:48,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=5094, Unknown=0, NotChecked=0, Total=5402 [2024-11-08 16:59:48,276 INFO L87 Difference]: Start difference. First operand 6976 states and 7742 transitions. Second operand has 74 states, 74 states have (on average 6.243243243243243) internal successors, (462), 74 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:00:20,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:00:20,932 INFO L93 Difference]: Finished difference Result 7183 states and 7952 transitions. [2024-11-08 17:00:20,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2024-11-08 17:00:20,933 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 6.243243243243243) internal successors, (462), 74 states have internal predecessors, (462), 0 states have call successors, (0), 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 164 [2024-11-08 17:00:20,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:00:20,939 INFO L225 Difference]: With dead ends: 7183 [2024-11-08 17:00:20,939 INFO L226 Difference]: Without dead ends: 6757 [2024-11-08 17:00:20,942 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3682 ImplicationChecksByTransitivity, 34.2s TimeCoverageRelationStatistics Valid=3635, Invalid=17535, Unknown=0, NotChecked=0, Total=21170 [2024-11-08 17:00:20,943 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 1898 mSDsluCounter, 2616 mSDsCounter, 0 mSdLazyCounter, 3493 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1898 SdHoareTripleChecker+Valid, 2711 SdHoareTripleChecker+Invalid, 3582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 3493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:00:20,943 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1898 Valid, 2711 Invalid, 3582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 3493 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-08 17:00:20,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6757 states. [2024-11-08 17:00:20,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6757 to 6751. [2024-11-08 17:00:20,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6751 states, 6750 states have (on average 1.1118518518518519) internal successors, (7505), 6750 states have internal predecessors, (7505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:00:20,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6751 states to 6751 states and 7505 transitions. [2024-11-08 17:00:20,998 INFO L78 Accepts]: Start accepts. Automaton has 6751 states and 7505 transitions. Word has length 164 [2024-11-08 17:00:20,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:00:20,998 INFO L471 AbstractCegarLoop]: Abstraction has 6751 states and 7505 transitions. [2024-11-08 17:00:20,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 6.243243243243243) internal successors, (462), 74 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:00:20,999 INFO L276 IsEmpty]: Start isEmpty. Operand 6751 states and 7505 transitions. [2024-11-08 17:00:20,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-08 17:00:20,999 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:00:21,000 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:00:21,018 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-08 17:00:21,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-11-08 17:00:21,201 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:00:21,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:00:21,201 INFO L85 PathProgramCache]: Analyzing trace with hash 561693321, now seen corresponding path program 1 times [2024-11-08 17:00:21,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:00:21,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418842468] [2024-11-08 17:00:21,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:00:21,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:00:21,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:00:22,392 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 126 proven. 6 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2024-11-08 17:00:22,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:00:22,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418842468] [2024-11-08 17:00:22,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418842468] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:00:22,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900107403] [2024-11-08 17:00:22,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:00:22,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:00:22,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:00:22,394 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:00:22,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b064229a-8ccd-4541-846b-8d3031fc5dfa/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-08 17:00:22,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:00:22,748 INFO L255 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-08 17:00:22,751 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:00:27,229 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 124 proven. 6 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2024-11-08 17:00:27,230 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:00:35,522 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 126 proven. 6 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2024-11-08 17:00:35,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900107403] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:00:35,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:00:35,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 26, 28] total 71 [2024-11-08 17:00:35,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83862963] [2024-11-08 17:00:35,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:00:35,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-11-08 17:00:35,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:00:35,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-11-08 17:00:35,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=466, Invalid=4504, Unknown=0, NotChecked=0, Total=4970 [2024-11-08 17:00:35,525 INFO L87 Difference]: Start difference. First operand 6751 states and 7505 transitions. Second operand has 71 states, 71 states have (on average 3.0985915492957745) internal successors, (220), 71 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)